Andrew Gregory Ajemian, MD
Internal Medicine Physician · Chicago, IL
Andrew Gregory Ajemian, MD is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1255851317, issued on Jun 21, 2017. Check the license (Illinois 125.070259, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Andrew Gregory Ajemian
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 125.070259 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2525 S Michigan Ave, Chicago, IL 60616
- Phone
- (312) 567-2000
- Enumerated
- Jun 21, 2017
- Record last updated
- Jul 21, 2022
- Medicare enrollment
- Enrolled (PECOS I20200715001849); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 2525 S Michigan Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Andrew Gregory Ajemian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 125.070259Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average internal medicine physician in 2024
222 Medicare Part D claims for 88 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium16 claims
- Farxiga13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $108.39
5 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Community Health Care, Inc.Vineland, NJ
- Cooper Physician Offices PAVineland, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
2,867 internal medicine physician records list a practice address in Chicago
They are 2,867 of the 63,379 NPPES records with a practice address in Chicago, and 7,238 internal medicine physician records in Illinois.
All 2,867 in Chicago → All 7,238 in Illinois → Every provider in Chicago →
Other internal medicine physician records in Illinois
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- Motaz Abas, MDPeoria, IL1215510201
- Elias Abate, M.D.Chicago, IL1336712199
- Maliha Abbas, D.O.Chicago, IL1174963920
- Zareena Abbas, MDChicago, IL1427078872
- Abu Abbasi, MDChicago, IL1083243877
- Ayesha Abbasi, MDChicago, IL1376216705
- Khalda Abbasi, MDNaperville, IL1487705240
- Elmer Abbo, MDBurr Ridge, IL1710048541
- Paul Abbo, M.D.River Forest, IL1083693378
Common questions
What is Andrew Gregory Ajemian, MD's NPI number?
Andrew Gregory Ajemian, MD's National Provider Identifier (NPI) is 1255851317, issued on Jun 21, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Andrew Gregory Ajemian, MD located?
The NPPES record lists a practice address at 2525 S Michigan Ave, Chicago, IL, 60616. Phone: (312) 567-2000. Providers update this record themselves, so call before visiting.
How can I verify Andrew Gregory Ajemian, MD's license?
NPPES lists Illinois license number 125.070259, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Andrew Gregory Ajemian, MD prescribe under Medicare Part D?
In 2024, Andrew Gregory Ajemian, MD had 222 Medicare Part D claims for 88 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.