NPPES file of Aug 9, 2026

Tahseen Azeem, DO

Hospitalist Physician · Naperville, IL

Tahseen Azeem, DO is a hospitalist physician with a practice address in Naperville, Illinois, and NPI 1588240105, issued on Mar 23, 2021. Check the license (Illinois 036-171101, as entered in NPPES) 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
1588240105
Name
Tahseen Azeem
Credential
DO
Primary taxonomy
Hospitalist Physician 208M00000X
License number
036-171101 IL
Self-reported in NPPES; status is on the state search
Practice location
801 S Washington St, Naperville, IL 60540
Phone
(630) 527-3000
Enumerated
Mar 23, 2021
Record last updated
Aug 7, 2024
Fax
(630) 456-7486
Medicare enrollment
Enrolled (PECOS I20240802000134); 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 801 S Washington St

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

  1. Sean Adams, M.D.Anesthesiology Physician1598713661
  2. Saroosh Ahmed, MDEmergency Medicine Physician1639335078
  3. Faisal Akbari, M.DHospitalist Physician1740598705
  4. Catherine AlerNurse Practitioner1134584964
  5. Irfan Ali, DOHospitalist Physician1306427760
  6. Sivani Aluru, MDObstetrics & Gynecology Physician1275156325

Verify Tahseen Azeem in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036-171101
    Check 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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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97% fewer Medicare Part D claims than the average hospitalist physician in 2024

17 Medicare Part D claims for 14 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Tahseen Azeem17
  2. Specialty average521

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: $259.44

3 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 7,324 providers of this specialty with any payment received $494.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Tahseen Azeem$259.44
  2. Specialty average$494.84

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. Dupage Medical Group LtdBloomingdale, IL

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

Tahseen Azeem among 1,535 hospitalist physician records in Illinois

Tahseen Azeem, DO is one of 1,535 hospitalist physician records with a practice address in Illinois. 92% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 86% of them.

  • NPI issued2021 · 86% of these records are older, 7% newer
  • In a Medicare fileYes · 92% of these records are
  • In the CMS Doctors and Clinicians fileYes · 87% of these records are
  • Graduated2021 · median 2013 among the 1,339 with a school on file
  • Record last updated2024 · 32% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hospitalist Physician providers in Illinois

There are 1,535 hospitalist physician records in Illinois.

The 8 hospitalist physician records with the nearest ZIP codes

  1. Rahul Agarwal, M.D.Naperville, IL 605401992930374
  2. Galina Artemyeva, M.D.Naperville, IL 605401609038579
  3. Stephen Baldwin, MDNaperville, IL 605401790772457
  4. Armughan Bangash, M.DNaperville, IL 605401962679852
  5. Menka Desai, M.D.Naperville, IL 605401912155169
  6. Matthew Dunne, M.D.Naperville, IL 605401588853113
  7. Durre Khalil, M.D.Naperville, IL 605401487896940
  8. Masue Li, MDNaperville, IL 605401730287376

Common questions

What is Tahseen Azeem, DO's NPI number?

Tahseen Azeem, DO's National Provider Identifier (NPI) is 1588240105, issued on Mar 23, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Tahseen Azeem, DO located?

The NPPES record lists a practice address at 801 S Washington St, Naperville, IL, 60540. Phone: (630) 527-3000. Providers update this record themselves, so call before visiting.

How can I verify Tahseen Azeem, DO's license?

NPPES lists Illinois license number 036-171101, 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 Tahseen Azeem, DO prescribe under Medicare Part D?

In 2024, Tahseen Azeem, DO had 17 Medicare Part D claims for 14 beneficiaries; the average among hospitalist physician prescribers was 521. 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.