Gulshan S. Panjwani, MD
NPI 1548348030ActiveIndividual· Internal Medicine· Antioch, CA
Internal Medicine (MD) with Permanente Medical Group Inc, practicing in Antioch, California. Their prescriptions cost Medicare Part D more than their services did: $314,563 for 6,117 claims, against $1,830 paid for services in 2024. Abbott Laboratories was the largest of 2 companies reporting payments in 2025, $196.09 in all, mostly device and supply loans.
Overview
| NPI | 1548348030 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 1, 2006 |
| Last updated in NPPES | Dec 13, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A93517 | 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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 20 |
|---|---|
| Services billed | 33 across 8 procedure codes |
| Paid by Medicare | $1,830 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,117 · 13,980 30-day fills |
|---|---|
| Patients | 803 |
| Total drug cost | $314,563 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 1997 |
|---|---|
| Medicare specialty | Family Practice |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Industry payments (Open Payments)
- 2025$196.09 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $99.90 | 1 |
| Harmony Biosciences LLC | $96.19 | 1 |
What the 2025 payments were for
- Long term medical supply or device loan$99.90 · 1 payment
- Food and Beverage$96.19 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 67 internal medicine physicians in Antioch · All internal medicine physicians in California