Shireen Ghorbani, M.D.
NPI 1083845598ActiveIndividual· Internal Medicine, Gastroenterology· Walnut Creek, CA
Internal Medicine, Gastroenterology (M.D.) in Walnut Creek, California, licensed in CA, with an NPI issued in July 2009. 256 Medicare patients in 2024, $57,544 paid; nearly all of their 297 Part D prescriptions were generic (91%). Mallinckrodt Hospital Products Inc. was the largest of 4 companies reporting payments in 2025, $408.93 in all, mostly food and beverage. Lists John Muir Medical Center - Walnut Creek Campus as a hospital affiliation.
Overview
| NPI | 1083845598 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 31, 2009 |
| Last updated in NPPES | Dec 10, 2025 |
| Certified by provider | Dec 10, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A115117 | 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 | 256 |
|---|---|
| Services billed | 472 across 35 procedure codes |
| Paid by Medicare | $57,544 |
Part D prescriptions in 2024
| Prescriptions (claims) | 297 · 637 30-day fills |
|---|---|
| Patients | 133 |
| Total drug cost | $46,092 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 2009 |
|---|---|
| Medicare specialty | Gastroenterology |
Hospital affiliation
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
Industry payments (Open Payments)
- 2025$408.93 · 9 payments from 4 companies
- 2024$721.11 · 21 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Mallinckrodt Hospital Products Inc. | $182.65 | 4 |
| Abbvie Inc. | $151.79 | 2 |
| Janssen Biotech, Inc. | $56.86 | 2 |
| Intercept Pharmaceuticals, Inc. | $17.63 | 1 |
What the 2025 payments were for
- Food and Beverage$376.26 · 6 payments
- Education$32.67 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 41 gastroenterologists in Walnut Creek · All gastroenterologists in California