Afrin Kamal Rahman, M.D.
NPI 1144516816ActiveIndividual· Internal Medicine, Gastroenterology· Stanford, CA
Internal Medicine, Gastroenterology (M.D.) in Stanford, California, trained at University of Missouri, Kansas City, School of Medicine (class of 2011). Their prescriptions cost Medicare Part D more than their services did: $172,734 for 1,025 claims, against $89,207 paid for services in 2024. Genzyme Corporation was the largest of 3 companies reporting payments in 2025, $121.11 in all, mostly food and beverage.
Overview
| NPI | 1144516816 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jun 21, 2011 |
| Last updated in NPPES | Apr 3, 2026 |
| Certified by provider | Apr 3, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A156534 | CA |
| Internal Medicine | 207R00000X | 2011018166 | MO |
| Internal Medicine | 207R00000X | A156534 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 361 |
|---|---|
| Services billed | 869 across 48 procedure codes |
| Paid by Medicare | $89,207 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,025 · 1,568 30-day fills |
|---|---|
| Patients | 218 |
| Total drug cost | $172,734 |
| Generic share | 76% of claims |
Education and affiliations
| Medical school | University of Missouri, Kansas City, School of Medicine |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliation
- Stanford Health CareStanford, CA
Industry payments (Open Payments)
- 2025$121.11 · 3 payments from 3 companies
- 2024$270.43 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $58.15 | 1 |
| Regeneron Healthcare Solutions, Inc. | $48.58 | 1 |
| Phathom Pharmaceuticals, Inc. | $14.38 | 1 |
What the 2025 payments were for
- Food and Beverage$121.11 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 64 gastroenterologists in Stanford · All gastroenterologists in California