NPPES file of Aug 9, 2026

Aleena Rehman Mahmood, MD

Allergy & Immunology (Internal Medicine) Physician · Middletown, NY

Aleena Rehman Mahmood, MD is an allergy & immunology (internal medicine) physician with a practice address in Middletown, New York, and NPI 1538785506, issued on Jun 24, 2020. Check the license (New York 339670, 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
1538785506
Name
Aleena Rehman Mahmood
Credential
MD
Primary taxonomy
Allergy & Immunology (Internal Medicine) Physician 207RA0201X
License number
339670 NY
Self-reported in NPPES; status is on the state search
Practice location
111 Maltese Dr, Middletown, NY 10940
Phone
(845) 342-4774
Enumerated
Jun 24, 2020
Record last updated
Dec 2, 2025
Medicare enrollment
Enrolled (PECOS I20260108002598); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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 111 Maltese Dr

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

  1. Imad Abushahin, MDOrthopaedic Surgery Physician1275013609
  2. Christopher Allen, M.D.Obstetrics & Gynecology Physician1023217148
  3. Koshnaf Antar, MDRheumatology Physician1720194152
  4. Michelle Appelbaum, DNSC, FNPFamily Nurse Practitioner1598767097
  5. Esther Arguello Perez, M.DInfectious Disease Physician1598039091
  6. Rosa Atkinson, M.D.Specialist1861573966

Verify Aleena Rehman 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 339670
    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.

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99% fewer Medicare Part D claims than the average allergy & immunology (internal medicine) physician in 2024

11 Medicare Part D claims, against an average of 789 among the 429 providers of this specialty who prescribed in Part D.

  1. Aleena Mahmood11
  2. Specialty average789

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. Middletown Medical PCMiddletown, NY

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

Allergy & Immunology (Internal Medicine) Physician providers in New York

There are 61 allergy & immunology (internal medicine) physician records in New York.

Other allergy & immunology (internal medicine) physician records in New York

  1. Segundo AmargaOzone Park, NY1770504169
  2. Julian Ambrus, MDWilliamsville, NY1811919988
  3. Eduardo Arreaza, M.D.Rochester, NY1770541880
  4. Alexander Babazadeh, M.D.Brookyln, NY1285088815
  5. Massoud Benhuri, MD FACPNorth Massapequa, NY1861575136
  6. Sean Brady, MDWilliamsville, NY1356583124
  7. Paula Busse, MDNew York, NY1134147937
  8. Edward Champoux, MDHorseheads, NY1851387724
  9. Andrew Chang, MD,MPH,MABrooklyn, NY1083889117
  10. Michael Cohen, MDNew York City, NY1881785202

Common questions

What is Aleena Rehman Mahmood, MD's NPI number?

Aleena Rehman Mahmood, MD's National Provider Identifier (NPI) is 1538785506, issued on Jun 24, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Aleena Rehman Mahmood, MD located?

The NPPES record lists a practice address at 111 Maltese Dr, Middletown, NY, 10940. Phone: (845) 342-4774. Providers update this record themselves, so call before visiting.

How can I verify Aleena Rehman Mahmood, MD's license?

NPPES lists New York license number 339670, 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 Aleena Rehman Mahmood, MD prescribe under Medicare Part D?

In 2024, Aleena Rehman Mahmood, MD had 11 Medicare Part D claims; the average among allergy & immunology (internal medicine) physician prescribers was 789. 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.