Amir Mahmoud, MD
Hematology (Internal Medicine) Physician · Saint Louis, MO
Amir Mahmoud, MD is a hematology (internal medicine) physician with a practice address in Saint Louis, Missouri, and NPI 1619549078, issued on Jul 14, 2021. Check the license (Missouri 2025046820, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Amir Mahmoud
- Credential
- MD
- Primary taxonomy
- Hematology (Internal Medicine) Physician 207RH0000X
- License number
- 2025046820 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110
- Phone
- (314) 362-7216
- Enumerated
- Jul 14, 2021
- Record last updated
- Jul 15, 2026
- Fax
- (314) 362-8813
- Medicaid ID
- 200147217 MO
- Entity
- Type 1 · individual
8 nearest hematology (internal medicine) physician records → All 22 in Missouri → Look up another NPI →
Also registered at 1 Barnes Jewish Hospital Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Amir Mahmoud in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2025046820Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average hematology (internal medicine) physician in 2024
172 Medicare Part D claims for 45 beneficiaries, against an average of 496 among the 1,036 providers of this specialty who prescribed in Part D.
Most prescribed
- Losartan Potassium13 claims
- Atorvastatin Calcium12 claims
- Lisinopril11 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.
Amir Mahmoud among 22 hematology (internal medicine) physician records in Missouri
Amir Mahmoud, MD is one of 22 hematology (internal medicine) physician records with a practice address in Missouri. 77% 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 95% of them.
- NPI issued2021 · 95% of these records are older, 0% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2026 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology (Internal Medicine) Physician providers in Missouri
There are 22 hematology (internal medicine) physician records in Missouri.
All 22 in Missouri → Every provider in Saint Louis → Hematology (Internal Medicine) Physician nationwide →
The 8 hematology (internal medicine) physician records with the nearest ZIP codes
- Helen Ajufo, MDSaint Louis, MO 631101497282115
- Vorachart Auethavekiat, MDSaint Louis, MO 631101003872615
- Scot Hickman, MDSaint Louis, MO 631101114976818
- Gregory Longmore, MDSaint Louis, MO 631101912924473
- Elaine Majerus, MDSaint Louis, MO 631101326064544
- Katherine Ponder, MDSaint Louis, MO 631101689692493
- Joshua Siner, MDSaint Louis, MO 631101467944520
- Douglas Tollefsen, MDSaint Louis, MO 631101679599815
Common questions
What is Amir Mahmoud, MD's NPI number?
Amir Mahmoud, MD's National Provider Identifier (NPI) is 1619549078, issued on Jul 14, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Amir Mahmoud, MD located?
The NPPES record lists a practice address at 1 Barnes Jewish Hospital Plz, Saint Louis, MO, 63110. Phone: (314) 362-7216. Providers update this record themselves, so call before visiting.
How can I verify Amir Mahmoud, MD's license?
NPPES lists Missouri license number 2025046820, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Amir Mahmoud, MD prescribe under Medicare Part D?
In 2024, Amir Mahmoud, MD had 172 Medicare Part D claims for 45 beneficiaries; the average among hematology (internal medicine) physician prescribers was 496. 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.