Dr. David J. Fox , MD
Internal Medicine โข Chicago, IL
259 E Erie St, Suite 2230
Chicago, IL 606112987
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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NPI assigned on June 24, 2009; this date does not establish years in practice.
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Published CMS data list 2,234 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- G0439 โ Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit: 320 service units.
- G2211 โ 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: 278 service units.
- 99214 โ Established patient outpatient office visit: 254 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ 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 23 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 7,191 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Atorvastatin Calcium โ 817 prescription fills, including refills.
- Amlodipine Besylate โ 620 prescription fills, including refills.
- Losartan Potassium โ 291 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 121 records in the table ยท Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 90% of clinicians listed under Internal Medicine in Chicago, IL (2024, 1,008 clinicians with data). Median for this group: 406. Middle half: 157 to 820.
More Medicare Part B services than 85% 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 โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 1,112 in 2020 to 2,234 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
259 E Erie St
Suite 2230
Chicago, IL 606112987
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 2 distinct group names: Northwestern Medical Faculty Foundation; Select Rehabilitation, Llc. 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
2009
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
475 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 โ by Provider, 2024.
Medicare-allowed amount
About $207,143 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 โ by Provider and Service, 2024.
Paid by Medicare
About $176,333 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 โ by Provider and Service, 2024.
30-day fills
17,686 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
$706,379 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 โ by Provider and Drug, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019โ2025.
Years since graduation
17 years (graduated 2009)
CMS Doctors and Clinicians data list 2009 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
2009
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, โDoes your provider accept Medicare as full payment?โ
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. Fox 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. Fox 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 Chicago and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 90% of clinicians listed under Internal Medicine in Chicago, IL (2024, 1,008 clinicians with data). Median for this group: 406. Middle half: 157 to 820.
More Medicare Part B services than 85% 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 95% of clinicians listed under Internal Medicine in Chicago, IL (2024, 1,008 clinicians with data). Median for this group: $41,573. Middle half: $14,662 to $79,189.
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 95% of clinicians listed under Internal Medicine in Chicago, IL (2024, 1,008 clinicians with data). Median for this group: $31,519. Middle half: $10,954 to $62,185.
A higher Medicare payment amount than 90% 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
More Part D prescriptions than 90% of clinicians listed under Internal Medicine in Chicago, IL (2024, 1,269 clinicians with data). Median for this group: 474. Middle half: 74 to 2,358.
More Part D prescriptions than 80% 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 higher Part D drug cost than 90% of clinicians listed under Internal Medicine in Chicago, IL (2024, 1,269 clinicians with data). Median for this group: $40,678. Middle half: $1,543 to $232,098.
A higher Part D drug cost than 85% of 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.
2,870 active clinicians are listed under Internal Medicine with a practice address in Chicago, IL (7,245 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Chicago
13.3% of these 2,870 clinicians have the CMS telehealth indicator.
38.5% of these 2,870 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 101% from 1,112 in 2020 to 2,234 in 2024.
- 2020: 1,112
- 2021: 1,260
- 2022: 1,668
- 2023: 1,834
- 2024: 2,234
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Medicare-allowed amount
Medicare-allowed amount increased 105% from $100,964 in 2020 to $207,143 in 2024.
- 2020: $100,964
- 2021: $135,985
- 2022: $169,856
- 2023: $173,500
- 2024: $207,143
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Paid by Medicare
Paid by Medicare increased 116% from $81,651 in 2020 to $176,333 in 2024.
- 2020: $81,651
- 2021: $109,141
- 2022: $139,120
- 2023: $146,441
- 2024: $176,333
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 72% from 4,176 in 2020 to 7,191 in 2024.
- 2020: 4,176
- 2021: 4,529
- 2022: 4,804
- 2023: 6,313
- 2024: 7,191
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30-day fills
30-day fills increased 79% from 9,895 in 2020 to 17,686 in 2024.
- 2020: 9,895
- 2021: 10,712
- 2022: 11,598
- 2023: 15,675
- 2024: 17,686
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Part D drug cost
Part D drug cost increased 203% from $233,012 in 2020 to $706,379 in 2024.
- 2020: $233,012
- 2021: $321,786
- 2022: $362,710
- 2023: $683,651
- 2024: $706,379
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 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 โ by Provider and Service data, 2017โ2024; 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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G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
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320 | 320 | $373.00 | $138.91 |
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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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278 | 189 | $88.00 | $17.40 |
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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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254 | 188 | $323.00 | $135.96 |
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99497
Advance care planning, first 30 minutes
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246 | 246 | $442.00 | $87.98 |
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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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230 | 157 | $434.00 | $192.38 |
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99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
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106 | 106 | $132.00 | $60.17 |
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83036
Hemoglobin a1c level
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102 | 67 | $69.00 | $9.52 |
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G0008
Administration of influenza virus vaccine
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88 | 88 | $57.00 | $33.70 |
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90662
Influenza vaccine split virus, preservative free
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80 | 80 | $110.00 | $80.83 |
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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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72 | 72 | $219.00 | $95.79 |
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93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
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57 | 56 | $140.00 | $15.36 |
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90480
Admn sarscov2 vacc 1 dose
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50 | 49 | $88.00 | $44.94 |
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91320
Sarscv2 vac 30mcg trs-suc im
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50 | 49 | $205.58 | $147.43 |
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99422
Online digital evaluation and management service for an established patient for up to 7 days, total time 11-20 minutes
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45 | 41 | $35.00 | $31.05 |
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96372
Injection of drug or substance under skin or into muscle
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43 | 13 | $88.00 | $15.03 |
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G2212
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or
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39 | 25 | $168.00 | $34.85 |
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90677
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use
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29 | 29 | $397.00 | $290.81 |
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G0009
Administration of pneumococcal vaccine
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29 | 29 | $57.00 | $33.70 |
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99423
Online digital evaluation and management service for an established patient for up to 7 days, total time 21 or more minutes
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26 | 23 | $35.00 | $35.49 |
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G0402
Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment
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26 | 26 | $452.00 | $177.20 |
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36415
Insertion of needle into vein for collection of blood sample
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23 | 23 | $20.00 | $8.65 |
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G0180
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and
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21 | 13 | $193.00 | $56.60 |
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G0438
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit
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20 | 20 | $562.00 | $176.36 |
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 |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 817 | 67,943 | $8,081.33 | 239 |
| Amlodipine Besylate | Amlodipine Besylate | 620 | 53,710 | $5,469.05 | 184 |
| Losartan Potassium | Losartan Potassium | 291 | 25,634 | $3,063.15 | 86 |
| Levothyroxine Sodium | Levothyroxine Sodium | 283 | 24,689 | $3,496.82 | 75 |
| Lisinopril | Lisinopril | 211 | 18,935 | $1,840.96 | 63 |
| Omeprazole | Omeprazole | 200 | 14,950 | $2,923.04 | 59 |
| Hydrochlorothiazide | Hydrochlorothiazide | 173 | 15,250 | $912.69 | 59 |
| Tamsulosin Hcl | Tamsulosin Hcl | 161 | 11,621 | $3,602.06 | 48 |
| Metformin Hcl Er | Metformin Hcl | 152 | 12,844 | $1,587.12 | 46 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 140 | 11,805 | $1,731.90 | 45 |
| Olmesartan Medoxomil | Olmesartan Medoxomil | 138 | 11,214 | $2,182.94 | 39 |
| Alprazolam | Alprazolam | 137 | 4,421 | $875.11 | 30 |
| Metoprolol Succinate | Metoprolol Succinate | 130 | 10,343 | $2,196.45 | 40 |
| Metformin Hcl | Metformin Hcl | 120 | 9,535 | $2,516.27 | 36 |
| Gabapentin | Gabapentin | 107 | 8,430 | $2,396.06 | 33 |
| Pravastatin Sodium | Pravastatin Sodium | 104 | 9,204 | $1,688.74 | 32 |
| Zolpidem Tartrate | Zolpidem Tartrate | 92 | 4,500 | $665.98 | 28 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 91 | 1,962 | $2,336.93 | 18 |
| Jardiance | Empagliflozin | 86 | 5,498 | $103,866.96 | 20 |
| Escitalopram Oxalate | Escitalopram Oxalate | 81 | 6,794 | $1,176.76 | 25 |
| Simvastatin | Simvastatin | 79 | 7,110 | $929.06 | 23 |
| Ozempic | Semaglutide | 79 | 3,664 | $113,881.86 | 17 |
| Duloxetine Hcl | Duloxetine Hcl | 78 | 5,286 | $1,149.25 | 14 |
| Chlorthalidone | Chlorthalidone | 77 | 6,204 | $1,296.05 | 21 |
| Eliquis | Apixaban | 77 | 5,280 | $101,544.01 | 22 |
(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
NUCC 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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20120614000208
IL
9032373469
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
Select Rehabilitation, Llc
2600 Compass Rd, Glenview, IL 600268001
Northwestern Medical Faculty Foundation
675 N St Clair, Chicago, IL 606115975
Phone: 3126958918
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine - Geriatric Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner
Advanced Practice Registered Nurse, Certified Nurse Practitioner
Internal Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner
Advanced Practice Nurse
Internal Medicine - Endocrinology, Diabetes & Metabolism
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Career & Practice History
NPI enumerated June 24, 2009.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Internal Medicine Providers in Chicago
- Dr. Alisa Seo-Lee, MD
- Dr. Leah Alemu, MD
- Dr. Reginald Okagbue, MD
- Dr. Ben Tseng, MD
- Dr. Chineze Nwankwo, MD
- Dr. Bernice Man, MD
Mailing Address
259 E Erie St, Suite 2230
Chicago, IL 606112987
Phone: 3129266000