Dr. Patrick Michael Mackey , MD
Internal Medicine • Wheaton, IL
150 E Willow Ave Ste 300
Wheaton, IL 601875529
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Patrick Mackey is listed in NPPES under Internal Medicine.
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NPI assigned on May 10, 2007; this date does not establish years in practice.
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Published CMS data list 3,630 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 — Established patient outpatient office visit: 529 service units.
- 36415 — Insertion of needle into vein for collection of blood sample: 485 service units.
- G2211 — Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's: 352 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 31 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 4,783 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Amlodipine Besylate — 424 prescription fills, including refills.
- Atorvastatin Calcium — 369 prescription fills, including refills.
- Levothyroxine Sodium — 232 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 89 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 85% of clinicians listed under Internal Medicine in Wheaton, IL (2024, 15 clinicians with data). Median for this group: 1,418. Middle half: 733 to 2,370.
More Medicare Part B services than 90% of clinicians listed under Internal Medicine in Illinois (2024, 3,249 clinicians with data). Median for this group: 699. Middle half: 285 to 1,340.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 1,937 in 2020 to 3,630 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
150 E Willow Ave Ste 300
Wheaton, IL 601875529
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Dupage Medical Group Ltd. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Rush Medical College Of Rush University
2005
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
391 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $178,428 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $143,375 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
12,596 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$132,355 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $97.79 across 4 records.
By nature of payment
- Food and Beverage: $97.79 across 4 records.
Reporting-company totals
- Exact Sciences Corporation: $74.59 across 3 records.
- Pfizer Inc.: $23.20 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
21 years (graduated 2005)
CMS Doctors and Clinicians data list 2005 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2007
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Mackey has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Mackey as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Wheaton and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 85% of clinicians listed under Internal Medicine in Wheaton, IL (2024, 15 clinicians with data). Median for this group: 1,418. Middle half: 733 to 2,370.
More Medicare Part B services than 90% of clinicians listed under Internal Medicine in Illinois (2024, 3,249 clinicians with data). Median for this group: 699. Middle half: 285 to 1,340.
Medicare-allowed amount
A higher Medicare-allowed amount than 60% of clinicians listed under Internal Medicine in Wheaton, IL (2024, 15 clinicians with data). Median for this group: $128,027. Middle half: $53,921 to $208,929.
A higher Medicare-allowed amount than 85% of clinicians listed under Internal Medicine in Illinois (2024, 3,249 clinicians with data). Median for this group: $67,802. Middle half: $27,619 to $124,679.
Paid by Medicare
A higher Medicare payment amount than 60% of clinicians listed under Internal Medicine in Wheaton, IL (2024, 15 clinicians with data). Median for this group: $103,391. Middle half: $40,505 to $169,351.
A higher Medicare payment amount than 85% of clinicians listed under Internal Medicine in Illinois (2024, 3,249 clinicians with data). Median for this group: $52,838. Middle half: $21,117 to $98,214.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Internal Medicine in Wheaton, IL (2024, 14 clinicians with data). Median for this group: 4,658. Middle half: 3,637 to 7,407.
More Part D prescriptions than 75% of clinicians listed under Internal Medicine in Illinois (2024, 3,755 clinicians with data). Median for this group: 1,030. Middle half: 99 to 4,658.
Part D drug cost
A lower Part D drug cost than 80% of clinicians listed under Internal Medicine in Wheaton, IL (2024, 14 clinicians with data). Median for this group: $354,156. Middle half: $192,915 to $489,656.
Close to the middle for clinicians listed under Internal Medicine in Illinois (2024, 3,755 clinicians with data). Median for this group: $78,716. Middle half: $2,604 to $371,507.
20 active clinicians are listed under Internal Medicine with a practice address in Wheaton, IL (7,245 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Wheaton
70% of these 20 clinicians have the CMS telehealth indicator.
85% of these 20 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 87% from 1,937 in 2020 to 3,630 in 2024.
- 2020: 1,937
- 2021: 2,678
- 2022: 2,605
- 2023: 2,894
- 2024: 3,630
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Medicare-allowed amount
Medicare-allowed amount increased 93% from $92,616 in 2020 to $178,428 in 2024.
- 2020: $92,616
- 2021: $141,492
- 2022: $135,992
- 2023: $165,368
- 2024: $178,428
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Paid by Medicare
Paid by Medicare increased 93% from $74,288 in 2020 to $143,375 in 2024.
- 2020: $74,288
- 2021: $113,700
- 2022: $107,470
- 2023: $132,065
- 2024: $143,375
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 43% from 3,343 in 2020 to 4,783 in 2024.
- 2020: 3,343
- 2021: 3,686
- 2022: 4,008
- 2023: 4,438
- 2024: 4,783
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30-day fills
30-day fills increased 49% from 8,446 in 2020 to 12,596 in 2024.
- 2020: 8,446
- 2021: 9,269
- 2022: 10,387
- 2023: 11,447
- 2024: 12,596
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Part D drug cost
Part D drug cost varied from year to year: $143,148 in 2020 and $132,355 in 2024.
- 2020: $143,148
- 2021: $177,683
- 2022: $198,401
- 2023: $236,561
- 2024: $132,355
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $59.59 in 2022 to $97.79 in 2025.
- 2022: $59.59
- 2023: $235.67
- 2024: $30.66
- 2025: $97.79
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $97.79.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
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Cologuard Collection Kit | General | $26.24 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
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Cologuard Collection Kit | General | $24.91 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
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Cologuard Collection Kit | General | $23.44 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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PREVNAR 20 | General | $23.20 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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529 | 311 | $229.00 | $131.42 |
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36415
Insertion of needle into vein for collection of blood sample
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485 | 313 | $20.00 | $8.65 |
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G2211
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
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352 | 189 | $35.00 | $16.68 |
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80053
Blood test, comprehensive group of blood chemicals
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298 | 255 | $55.00 | $10.35 |
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85025
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
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284 | 230 | $40.00 | $7.61 |
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G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
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266 | 266 | $229.00 | $132.92 |
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80061
Blood test, lipids (cholesterol and triglycerides)
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246 | 230 | $69.00 | $13.12 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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176 | 140 | $157.00 | $93.27 |
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83036
Hemoglobin a1c level
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146 | 106 | $50.00 | $9.52 |
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G0103
Prostate cancer screening; prostate specific antigen test (psa)
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102 | 102 | $52.00 | $18.92 |
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
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85 | 64 | $307.00 | $185.49 |
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84443
Blood test, thyroid stimulating hormone (tsh)
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83 | 71 | $86.00 | $16.46 |
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84153
Psa (prostate specific antigen) measurement, total
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69 | 65 | $94.00 | $18.02 |
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80048
Blood test, basic group of blood chemicals (calcium, total)
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64 | 55 | $44.00 | $8.29 |
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82043
Urine microalbumin (protein) level
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52 | 51 | $30.00 | $5.66 |
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82570
Creatinine level to test for kidney function or muscle injury
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52 | 51 | $27.00 | $5.08 |
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G0008
Administration of influenza virus vaccine
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42 | 41 | $55.00 | $33.45 |
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90653
Influenza vaccine, inactivated
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39 | 39 | $251.00 | $81.82 |
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93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
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39 | 39 | $72.00 | $14.81 |
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82607
Cyanocobalamin (vitamin b-12) level
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27 | 22 | $77.00 | $14.78 |
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82728
Ferritin (blood protein) level
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24 | 21 | $70.00 | $13.36 |
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83540
Iron level
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21 | 18 | $33.00 | $6.34 |
|
83550
Iron binding capacity
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21 | 18 | $45.00 | $8.57 |
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99442
Telephone medical discussion with physician, 11-20 minutes
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21 | 20 | $179.00 | $91.85 |
|
84439
Thyroxine (thyroid chemical), free
|
20 | 14 | $46.00 | $8.84 |
(top 25 shown)
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Amlodipine Besylate | Amlodipine Besylate | 424 | 37,100 | $3,180.15 | 124 |
| Atorvastatin Calcium | Atorvastatin Calcium | 369 | 31,627 | $3,951.28 | 110 |
| Levothyroxine Sodium | Levothyroxine Sodium | 232 | 20,469 | $2,457.75 | 61 |
| Metformin Hcl | Metformin Hcl | 232 | 20,745 | $2,054.13 | 68 |
| Losartan Potassium | Losartan Potassium | 186 | 16,111 | $1,612.75 | 59 |
| Pravastatin Sodium | Pravastatin Sodium | 173 | 15,137 | $1,998.55 | 52 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 165 | 14,650 | $1,793.57 | 64 |
| Omeprazole | Omeprazole | 143 | 12,810 | $1,488.51 | 40 |
| Lisinopril | Lisinopril | 137 | 11,517 | $947.20 | 40 |
| Tamsulosin Hcl | Tamsulosin Hcl | 130 | 11,026 | $1,794.82 | 38 |
| Metoprolol Succinate | Metoprolol Succinate | 119 | 9,451 | $1,661.25 | 38 |
| Pantoprazole Sodium | Pantoprazole Sodium | 115 | 8,416 | $1,218.64 | 31 |
| Hydrochlorothiazide | Hydrochlorothiazide | 110 | 9,790 | $751.94 | 33 |
| Simvastatin | Simvastatin | 95 | 8,550 | $627.50 | 29 |
| Glimepiride | Glimepiride | 95 | 8,560 | $941.19 | 31 |
| Escitalopram Oxalate | Escitalopram Oxalate | 81 | 6,355 | $1,386.12 | 23 |
| Warfarin Sodium | Warfarin Sodium | 80 | 4,459 | $789.54 | 14 |
| Allopurinol | Allopurinol | 71 | 6,270 | $736.43 | 20 |
| Alprazolam | Alprazolam | 69 | 2,722 | $679.36 | 15 |
| Tramadol Hcl | Tramadol Hcl | 67 | 1,379 | $124.60 | 16 |
| Furosemide | Furosemide | 66 | 4,470 | $292.25 | 20 |
| Gabapentin | Gabapentin | 63 | 4,862 | $888.81 | 24 |
| Azithromycin | Azithromycin | 54 | 258 | $236.15 | 46 |
| Metoprolol Tartrate | Metoprolol Tartrate | 53 | 4,618 | $390.30 | 16 |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 49 | 466 | $437.75 | 38 |
(top 25 shown)
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2023-08-29NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
NUCC Taxonomy Code: 208000000X
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20091119000193
IL
7810035474
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Dupage Medical Group Ltd
430 Warrenville Rd, Lisle, IL 605321348
Phone: 6304326180
Dupage Medical Group Ltd
17495 La Grange Rd, Tinley Park, IL 604877581
Phone: 7082267000
Dupage Medical Group Ltd
30 Stratford Dr, Bloomingdale, IL 601082201
Phone: 6308932210
Dupage Medical Group Ltd
1325 N Meacham Rd, Schaumburg, IL 601734824
Phone: 6304699200
Dupage Medical Group Ltd
2100 Glenwood Ave, Joliet, IL 604355487
Phone: 8157252121
Dupage Medical Group Ltd
430 Pennsylvania Ave, Glen Ellyn, IL 601374464
Phone: 6304699200
Dupage Medical Group Ltd
40 S Clay St, Hinsdale, IL 605213257
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Pediatrics
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 150 E WILLOW AVE STE 300, WHEATON, IL 601875529 (Tel: 6304697700)
Registered at PO BOX 713260, CHICAGO, IL 606771260 (Tel: 6304699200)
Pediatrics (license number reported to NPPES: IL 036123918)
NPI status registered as active in NPPES database
Registered at 701 W NORTH AVE, MELROSE PARK, IL 601601612 (Tel: 7086813200)
Registered at 701 W NORTH AVE, MELROSE PARK, IL 601601612 (Tel: 7086813200)
Recorded as PATRICK MACKEY, M.D.
Internal Medicine (license number reported to NPPES: IL 036123918)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Wheaton
- Dr. Firdose Gill, DO
- Dr. Scott Kolbaba, MD
- Dr. Maryanne Miller, MD
- Dr. Melissa Schumacher, MD
- Dr. Sapan Patel, MD
- Dr. Christopher Tebeau, MD
Mailing Address
Po Box 713260
Chicago, IL 606771260
Phone: 6304699200