NPPES file of Aug 9, 2026

Zerin Tasneem Mahmood, DO

Internal Medicine Physician · Poughkeepsie, NY

Zerin Tasneem Mahmood, DO is an internal medicine physician with a practice address in Poughkeepsie, New York, and NPI 1336762574, issued on May 21, 2020. Check the license (New York 322371, as entered in NPPES) on the NYS Education Department, Office of the Professions; 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
1336762574
Name
Zerin Tasneem Mahmood
Credential
DO
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
322371 NY
Self-reported in NPPES; status is on the state search
Practice location
45 Reade PL, Poughkeepsie, NY 12601
Phone
(845) 454-8500
Enumerated
May 21, 2020
Record last updated
Nov 7, 2023
Medicare enrollment
Enrolled (PECOS I20231121000816); 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.
Download card Updates feed

Also registered at 45 Reade PL

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

  1. Ahmad AbadiInternal Medicine Physician1780258517
  2. Dina Abi Fadel, M.DPulmonary Disease Physician1528234135
  3. Feraol Adem, MDStudent in an Organized Health Care Education/Training Program1215730395
  4. Huraiya Adhora, DOStudent in an Organized Health Care Education/Training Program1295538429
  5. Nadia Adside, MDEmergency Medicine Physician1053999201
  6. Richard Afifi, PA-CPhysician Assistant1336794619

Verify Zerin Tasneem Mahmood in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
    Search for license 322371
    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 New York 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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

90% fewer Medicare Part D claims than the average internal medicine physician in 2024

316 Medicare Part D claims for 145 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 12 claims were for opioids.

  1. Zerin Mahmood316
  2. Specialty average3,176

Most prescribed

  1. Pantoprazole Sodium37 claims
  2. Prednisone22 claims
  3. Amoxicillin-Clavulanate Potass18 claims
  4. Cefuroxime17 claims
  5. Furosemide14 claims
  6. Eliquis13 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.

Bills Medicare through one group practice

  1. Nuvance Health Medical Practice PCPoughkeepsie, NY

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

Zerin Tasneem Mahmood among 12,067 internal medicine physician records in New York

Zerin Tasneem Mahmood, DO is one of 12,067 internal medicine physician records with a practice address in New York. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 87% of them.

  • NPI issued2020 · 87% of these records are older, 9% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2020 · median 2002 among the 7,221 with a school on file
  • Record last updated2023 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

65 internal medicine physician records list a practice address in Poughkeepsie

They are 65 of the 3,701 NPPES records with a practice address in Poughkeepsie, and 12,067 internal medicine physician records in New York.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Yaw Apenteng, MDPoughkeepsie, NY 126011134155435
  2. Renita Butler, M.D.Poughkeepsie, NY 126011851398697
  3. David Cho, M.D.Poughkeepsie, NY 126011033103445
  4. Davide Debellis, M.D.Poughkeepsie, NY 126011871512202
  5. Carlo Diminico, M.D.Poughkeepsie, NY 126011508863275
  6. Michael Gaesser, M.D.Poughkeepsie, NY 126011568461713
  7. Christopher George, MDPoughkeepsie, NY 126011679559595
  8. Alan Gross, M.D.Poughkeepsie, NY 126011194745869

Common questions

What is Zerin Tasneem Mahmood, DO's NPI number?

Zerin Tasneem Mahmood, DO's National Provider Identifier (NPI) is 1336762574, issued on May 21, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Zerin Tasneem Mahmood, DO located?

The NPPES record lists a practice address at 45 Reade PL, Poughkeepsie, NY, 12601. Phone: (845) 454-8500. Providers update this record themselves, so call before visiting.

How can I verify Zerin Tasneem Mahmood, DO's license?

NPPES lists New York license number 322371, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Zerin Tasneem Mahmood, DO prescribe under Medicare Part D?

In 2024, Zerin Tasneem Mahmood, DO had 316 Medicare Part D claims for 145 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.