Dr. Michael Obeng Appiagyei , MD
Internal Medicine • Hoffman Estates, IL
1585 Barrington Rd Ste 505
Hoffman Estates, IL 601695020
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. Michael Appiagyei is listed in NPPES under Internal Medicine.
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NPI assigned on March 14, 2006; this date does not establish years in practice.
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Published CMS data list 564 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: 345 service units.
- 94664 — Evaluation of use of breathing device: 47 service units.
- 99213 — Established patient outpatient office visit: 30 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 11 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 4,447 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:
- Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) — 442 prescription fills, including refills.
- Atorvastatin Calcium — 261 prescription fills, including refills.
- Amlodipine Besylate — 223 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 109 records in the table · Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 75% of clinicians listed under Internal Medicine in Hoffman Estates, IL (2024, 23 clinicians with data). Median for this group: 928. Middle half: 568 to 1,185.
Close to the middle for Medicare Part B services among clinicians listed under Internal Medicine in Illinois (2024, 3,231 clinicians with data). Median for this group: 696. Middle half: 284 to 1,352.
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 1,867 in 2020 to 564 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
1585 Barrington Rd Ste 505
Hoffman Estates, IL 601695020
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Chicago, IL. See the list
Source: CMS NPPES NPI Registry, practice location records; 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, CMS release of October 2, 2026
1988
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
74 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 $58,388 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 $42,826 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
7,115 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
$438,584 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: $164.85 across 7 records.
By nature of payment
- Food and Beverage: $164.85 across 7 records.
Reporting-company totals (3 largest of 5)
- AstraZeneca Pharmaceuticals LP: $43.57 across 2 records.
- Eli Lilly and Company: $43.44 across 2 records.
- Exact Sciences Corporation: $32.98 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
38 years (graduated 1988)
CMS Doctors and Clinicians data list 1988 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, CMS release of October 2, 2026.
NPI first issued
2006
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, CMS release of October 2, 2026; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Appiagyei 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. Appiagyei 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 Hoffman Estates and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 75% of clinicians listed under Internal Medicine in Hoffman Estates, IL (2024, 23 clinicians with data). Median for this group: 928. Middle half: 568 to 1,185.
Close to the middle for clinicians listed under Internal Medicine in Illinois (2024, 3,231 clinicians with data). Median for this group: 696. Middle half: 284 to 1,352.
Medicare-allowed amount
A lower Medicare-allowed amount than 60% of clinicians listed under Internal Medicine in Hoffman Estates, IL (2024, 23 clinicians with data). Median for this group: $91,828. Middle half: $52,415 to $133,307.
Close to the middle for clinicians listed under Internal Medicine in Illinois (2024, 3,231 clinicians with data). Median for this group: $67,573. Middle half: $27,616 to $124,710.
Paid by Medicare
A lower Medicare payment amount than 65% of clinicians listed under Internal Medicine in Hoffman Estates, IL (2024, 23 clinicians with data). Median for this group: $72,331. Middle half: $40,465 to $101,312.
Close to the middle for clinicians listed under Internal Medicine in Illinois (2024, 3,231 clinicians with data). Median for this group: $52,732. Middle half: $21,099 to $98,198.
Medicare Part D prescriptions
More Part D prescriptions than 75% of clinicians listed under Internal Medicine in Hoffman Estates, IL (2024, 25 clinicians with data). Median for this group: 1,717. Middle half: 93 to 3,555.
More Part D prescriptions than 70% of clinicians listed under Internal Medicine in Illinois (2024, 3,708 clinicians with data). Median for this group: 1,080. Middle half: 101 to 4,782.
Part D drug cost
A higher Part D drug cost than 90% of clinicians listed under Internal Medicine in Hoffman Estates, IL (2024, 25 clinicians with data). Median for this group: $96,718. Middle half: $5,258 to $257,460.
A higher Part D drug cost than 75% of clinicians listed under Internal Medicine in Illinois (2024, 3,708 clinicians with data). Median for this group: $82,134. Middle half: $2,821 to $375,574.
36 active clinicians are listed under Internal Medicine with a practice address in Hoffman Estates, IL (7,195 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Hoffman Estates
33.3% of these 36 clinicians have the CMS telehealth indicator.
66.7% of these 36 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 decreased 70% from 1,867 in 2020 to 564 in 2024.
- 2020: 1,867
- 2021: 1,274
- 2022: 932
- 2023: 618
- 2024: 564
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Medicare-allowed amount
Medicare-allowed amount decreased 64% from $161,875 in 2020 to $58,388 in 2024.
- 2020: $161,875
- 2021: $128,707
- 2022: $89,509
- 2023: $68,681
- 2024: $58,388
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Paid by Medicare
Paid by Medicare decreased 66% from $126,431 in 2020 to $42,826 in 2024.
- 2020: $126,431
- 2021: $96,481
- 2022: $64,635
- 2023: $52,761
- 2024: $42,826
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 36% from 6,902 in 2020 to 4,447 in 2024.
- 2020: 6,902
- 2021: 8,858
- 2022: 7,526
- 2023: 6,593
- 2024: 4,447
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30-day fills
30-day fills decreased 24% from 9,331 in 2020 to 7,115 in 2024.
- 2020: 9,331
- 2021: 12,308
- 2022: 9,823
- 2023: 9,641
- 2024: 7,115
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Part D drug cost
Part D drug cost decreased 25% from $584,567 in 2020 to $438,584 in 2024.
- 2020: $584,567
- 2021: $753,503
- 2022: $599,648
- 2023: $617,787
- 2024: $438,584
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $129.85 in 2020 to $164.85 in 2025.
- 2020: $129.85
- 2022: $185.58
- 2023: $202.70
- 2024: $79.59
- 2025: $164.85
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, 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 $164.85.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
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The Cologuard Plus Collection Kit | General | $32.98 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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LINZESS | General | $26.22 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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MOUNJARO | General | $22.11 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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AIRSUPRA | General | $22.08 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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AIRSUPRA | General | $21.49 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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JARDIANCE | General | $21.33 |
| Cranial Technologies, Inc |
Food and Beverage
Cash or cash equivalent
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Doc Band | General | $18.64 |
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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345 | 60 | $229.13 | $132.39 |
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94664
Evaluation of use of breathing device
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47 | 17 | $30.85 | $18.69 |
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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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30 | 19 | $178.67 | $93.95 |
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G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
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24 | 24 | $220.00 | $133.61 |
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G0008
Administration of influenza virus vaccine
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21 | 21 | $45.48 | $33.70 |
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83036
Hemoglobin a1c level
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19 | 14 | $40.00 | $9.52 |
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80061
Blood test, lipids (cholesterol and triglycerides)
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18 | 14 | $30.00 | $13.12 |
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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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18 | 12 | $332.78 | $187.31 |
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82947
Blood glucose (sugar) level
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16 | 11 | $15.00 | $3.85 |
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G0444
Annual depression screening, 5 to 15 minutes
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14 | 14 | $75.00 | $19.26 |
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90662
Influenza vaccine split virus, preservative free
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12 | 12 | $104.33 | $81.82 |
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 |
|---|---|---|---|---|---|
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 442 | 11,866 | $11,340.54 | 47 |
| Atorvastatin Calcium | Atorvastatin Calcium | 261 | 17,588 | $2,194.13 | 82 |
| Amlodipine Besylate | Amlodipine Besylate | 223 | 14,482 | $1,129.52 | 69 |
| Alprazolam | Alprazolam | 170 | 4,245 | $1,914.43 | 20 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 114 | 2,859 | $4,122.75 | 37 |
| Gabapentin | Gabapentin | 106 | 4,166 | $2,022.47 | 27 |
| Metoprolol Succinate | Metoprolol Succinate | 98 | 4,911 | $802.84 | 25 |
| Potassium Chloride | Potassium Chloride | 87 | 3,588 | $1,007.50 | 25 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 80 | 5,040 | $1,091.61 | 23 |
| Fluticasone Propionate | Fluticasone Propionate | 77 | 3,810 | $1,338.11 | 28 |
| Pantoprazole Sodium | Pantoprazole Sodium | 77 | 3,423 | $928.07 | 22 |
| Hydrochlorothiazide | Hydrochlorothiazide | 70 | 4,830 | $190.75 | 31 |
| Lisinopril | Lisinopril | 68 | 4,087 | $289.40 | 23 |
| Metformin Hcl | Metformin Hcl | 68 | 4,222 | $470.79 | 24 |
| Famotidine | Famotidine | 66 | 2,416 | $551.24 | 14 |
| Ozempic | Semaglutide | 66 | 2,661 | $86,323.22 | 14 |
| Linzess | Linaclotide | 64 | 2,400 | $42,896.14 | 12 |
| Losartan Potassium | Losartan Potassium | 63 | 4,050 | $258.20 | 17 |
| Carvedilol | Carvedilol | 62 | 3,711 | $464.55 | 17 |
| Nifedipine Er | Nifedipine | 59 | 3,720 | $1,814.94 | 16 |
| Tramadol Hcl | Tramadol Hcl | 58 | 1,591 | $213.53 | — |
| Bumetanide | Bumetanide | 58 | 2,184 | $1,528.36 | 16 |
| Quetiapine Fumarate | Quetiapine Fumarate | 55 | 1,842 | $1,838.44 | 12 |
| Allopurinol | Allopurinol | 54 | 2,554 | $345.34 | 11 |
| Tamsulosin Hcl | Tamsulosin Hcl | 52 | 3,704 | $570.24 | 21 |
(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.
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
I20060428000067
IL
5698785228
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Secondary Practice Locations
1243 W 79th St
Chicago, IL 606203709
Phone: 7734880844
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner - Primary Care
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1585 BARRINGTON RD STE 505, HOFFMAN ESTATES, IL 601695020 (Tel: 8472787633)
Additional practice office at 1243 W 79th St, Chicago, IL 606203709
NPI status registered as active in NPPES database
Registered at 1243 W 79TH ST, CHICAGO, IL 606203709 (Tel: 7734880844)
Registered at 1243 W 79TH ST, CHICAGO, IL 606203709
Recorded as MICHAEL APPIAGYEI, M.D.
Internal Medicine (license number reported to NPPES: IL 036102176)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Hoffman Estates
- Dr. Manuel Perez, MD
- Dr. Robert Small, MD
- Dr. Januario Estrada, MD
- Dr. Gaston Carrasco, MD
- Dr. Norris Hsu, MD
- Dr. Edward Kogan, MD
Mailing Address
1243 W 79th St
Chicago, IL 606203709