Tahmeena Ahmed, MBBS
Tahmeena Ahmed, MBBS is a Hematology (Pathology) Physician in Stony Brook, NY, registered under NPI 1306047626. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is UNIVERSITY HOSPITAL L 2, ROOM 766, Stony Brook, NY 11790. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 235251 | NY | Hematology (Pathology) Physician primary |
| 235251 | NY | Blood Banking & Transfusion Medicine… |
This provider holds licence 235251 issued in NY. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Pathology
- PAC ID
- 5890884720
Medicare enrolment is recorded as approved under the provider type Practitioner - Pathology. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Hematology covers
A hematopathologist is expert in diseases that affect blood cells, blood clotting mechanisms, bone marrow and lymph nodes. This physician has the knowledge and technical skills essential for the laboratory diagnosis of anemias, leukemias, lymphomas, bleeding disorders and blood clotting disorders. NUCC Health Care Provider Taxonomy, code 207ZH0000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207ZH0000X | Hematology (Pathology) Physician Hematology | 235251 | NY | primary |
| 207ZB0001X | Blood Banking & Transfusion Medicine Physician Blood Banking & Transfusion Medicine | 235251 | NY |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1306047626 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 31, 2007 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | MBBS |
| Practice address |
UNIVERSITY HOSPITAL L 2, ROOM 766 Stony Brook, NY 11790 (631) 444-2626 |
| Mailing address |
PO BOX 1559 Stony Brook, NY 11790 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 3 | 0 | 6 | 0 | 4 | 7 | 6 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 3 | 0 | 6 | 0 | 4 | 5 | 6 | 4 |
Sum = 54 · next multiple of 10 = 60 · check digit = 6 · actual last digit = 6
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.