Adnan K. Diwan, MD
NPI 1144279878ActiveIndividual· Internal Medicine· Rye, NY
Internal Medicine (MD) in Rye, New York, trained at New York University School of Medicine (class of 2002). 267 Medicare patients in 2024, $92,899 paid; nearly all of their 188 Part D prescriptions were generic (92%). Siemens Medical Solutions USA, Inc. reported $15.49 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1144279878 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 9, 2006 |
| Last updated in NPPES | Oct 16, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 236586 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (CT); Practitioner - Internal Medicine (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 267 |
|---|---|
| Services billed | 1,051 across 11 procedure codes |
| Paid by Medicare | $92,899 |
Part D prescriptions in 2024
| Prescriptions (claims) | 188 · 200 30-day fills |
|---|---|
| Patients | 52 |
| Total drug cost | $11,353 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | New York University School of Medicine |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Internal Medicine |
Medical group
- Westchester Medical Group, P.CWhite Plains, NY · 415 clinicians
Hospital affiliation
- Greenwich Hospital Association -Greenwich, CT
Other facilities
- Greenwich Woods RehabilitationNursing home · Greenwich, CT
- The Enclave at Rye Rehab and Nursing CtrNursing home · Port Chester, NY
Industry payments (Open Payments)
- 2025$15.49 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Siemens Medical Solutions USA, Inc. | $15.49 | 1 |
What the 2025 payments were for
- Food and Beverage$15.49 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine providers in Rye
- 1033283049
- 1700975133
- 1891956769
- 1811972698
- 1740253954
- 1669445391
- 1093788374
- 1316632185
- 1609192608
- 1558408245
- 1912077918
- 1700866498