Muzammil Khan, MD
Muzammil Khan, MD is an Endocrinology, Diabetes & Metabolism Physician in Stony Brook, NY, registered under NPI 1003337700. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Stony Brook, based on OpenStreetMap data collected Sep 19, 2026. Parking is available about 541 ft away. The nearest transit stop is 0.27 mi away, served by Life Sciences. If you arrive early, there is a coffee shop 0.49 mi away.
Getting here and what is nearby
Parking Hospital Parking Garage 280 ft ~2 min
Transit Stony Brook Hospital 371 ft ~2 min
Parking 539 ft ~3 min
Parking 541 ft ~3 min
Transit Chapin 973 ft ~4 min
Transit Life Sciences 0.27 mi ~6 min
Hotel Hilton Garden Inn Stony Brook 0.41 mi ~9 min
Restaurant Subway 0.48 mi ~10 min
600 Circle Road, Stony Brook 11794
Mo-Fr 08:00-01:00; Sa-Su 11:00-20:00
Coffee Starbucks 0.49 mi ~10 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 307000 | NY | Endocrinology, Diabetes & Metabolism… primary |
| 307000 | NY | Hospitalist Physician |
This provider holds licence 307000 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 - Endocrinology
- PAC ID
- 2163840877
- Enrollment ID
- I20250929003904
Medicare enrolment is recorded as approved under the provider type Practitioner - Endocrinology. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Endocrinology, Diabetes & Metabolism covers
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems. NUCC Health Care Provider Taxonomy, code 207RE0101X
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 | |
|---|---|---|---|---|
| 207RE0101X | Endocrinology, Diabetes & Metabolism Physician Endocrinology, Diabetes & Metabolism | 307000 | NY | primary |
| 208M00000X | Hospitalist Physician | 307000 | 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 | 1003337700 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 3, 2017 |
| Last updated | Jan 16, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | MD |
| Practice address |
101 NICOLLS ROAD HSC T16-020 Stony Brook, NY 11794 (631) 444-8478 Fax (631) 444-7546 |
| Mailing address |
PO BOX 1554 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 | 0 | 0 | 3 | 3 | 3 | 7 | 7 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 3 | 5 | 7 | 0 |
Sum = 50 · next multiple of 10 = 50 · check digit = 0 · actual last digit = 0
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.