NPPES file of Aug 9, 2026

Azeem Mohsin Ahsan, DO

Geriatric Medicine (Family Medicine) Physician · Crest Hill, IL

Azeem Mohsin Ahsan, DO is a geriatric medicine (family medicine) physician with a practice address in Crest Hill, Illinois, and NPI 1861543985, issued on Jan 15, 2007. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1861543985
Name
Azeem Mohsin Ahsan
Credential
DO
Primary taxonomy
Geriatric Medicine (Family Medicine) Physician 207QG0300X
Practice location
1640 Willow Circle Dr, Crest Hill, IL 60435
Phone
(815) 741-2525
Enumerated
Jan 15, 2007
Record last updated
Jan 9, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(815) 741-2522
Medicare enrollment
Enrolled (PECOS I20120420000662); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1640 Willow Circle Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Timothy Davidson, D.C.Chiropractor1982654240
  2. Margaret Lewandowski, FNPFamily Nurse Practitioner1417095225

Verify Azeem Mohsin Ahsan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

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34% more Medicare Part D claims than the average geriatric medicine (family medicine) physician in 2024

6,990 Medicare Part D claims for 473 beneficiaries, against an average of 5,222 among the 1,271 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 347 claims were for opioids.

  1. Azeem Ahsan6,990
  2. Specialty average5,222

Most prescribed

  1. Atorvastatin Calcium369 claims
  2. Levothyroxine Sodium264 claims
  3. Lisinopril261 claims
  4. Hydrocodone-Acetaminophen245 claims
  5. Metformin Hcl240 claims
  6. Amlodipine Besylate228 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: $1,322.33

66 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 460 providers of this specialty with any payment received $1,218.49 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Azeem Ahsan$1,322.33
  2. Specialty average$1,218.49

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Health Service Systems, IncNew Lenox, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Azeem Mohsin Ahsan among 52 geriatric medicine (family medicine) physician records in Illinois

Azeem Mohsin Ahsan, DO is one of 52 geriatric medicine (family medicine) physician records with a practice address in Illinois. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 35% of them.

  • NPI issued2007 · 35% of these records are older, 54% newer
  • In a Medicare fileYes · 65% of these records are
  • In the CMS Doctors and Clinicians fileYes · 48% of these records are
  • Graduated1983 · median 2007 among the 25 with a school on file
  • Record last updated2008 · 65% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QG0300X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Geriatric Medicine (Family Medicine) Physician providers in Illinois

There are 52 geriatric medicine (family medicine) physician records in Illinois.

The 8 geriatric medicine (family medicine) physician records with the nearest ZIP codes

  1. Angelina RazoJoliet, IL 604351295690089
  2. Mohammed Yousuf, M.D.Lemont, IL 604391811172018
  3. Shipra Sabharwal, DOOak Lawn, IL 604531891132395
  4. Neenu Prasad, M.D.Burbank, IL 604591114214996
  5. Abdulateef Kareem, M.D.Calumet City, IL 604091336109784
  6. Vasireddy Bhoopal, M.D.,Palos Heights, IL 604631154333961
  7. Yaquta Patni, MDAurora, IL 605041689779357
  8. Afshan Hafiz Ahmed, MDLa Grange, IL 605251801956768

Common questions

What is Azeem Mohsin Ahsan, DO's NPI number?

Azeem Mohsin Ahsan, DO's National Provider Identifier (NPI) is 1861543985, issued on Jan 15, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Azeem Mohsin Ahsan, DO located?

The NPPES record lists a practice address at 1640 Willow Circle Dr, Crest Hill, IL, 60435. Phone: (815) 741-2525. Providers update this record themselves, so call before visiting.

How can I verify Azeem Mohsin Ahsan, DO's license?

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 Azeem Mohsin Ahsan, DO prescribe under Medicare Part D?

In 2024, Azeem Mohsin Ahsan, DO had 6,990 Medicare Part D claims for 473 beneficiaries; the average among geriatric medicine (family medicine) physician prescribers was 5,222. 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.