Gregory John Robertson, MD
NPI 1659329233ActiveIndividual· Emergency Medicine· Templeton, CA
Emergency Medicine (MD) in Templeton, California, licensed in CA, with an NPI issued in May 2006. In 2024 Medicare paid $29,585 for 203 patients, and Part D covered 206 of their prescriptions, 83% of them generic. Janssen Pharmaceuticals, Inc was the largest of 5 companies reporting payments in 2025, $307.59 in all, mostly food and beverage.
Overview
| NPI | 1659329233 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 5, 2006 |
| Last updated in NPPES | Dec 28, 2022 |
| Certified by provider | Dec 28, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | A76912 | CA |
| Emergency Medicine, Emergency Medical Services | 207PE0004X | A76912 | 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 - Emergency Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 203 |
|---|---|
| Services billed | 339 across 8 procedure codes |
| Paid by Medicare | $29,585 |
Part D prescriptions in 2024
| Prescriptions (claims) | 206 · 235 30-day fills |
|---|---|
| Patients | 148 |
| Total drug cost | $5,615 |
| Generic share | 83% of claims |
Industry payments (Open Payments)
- 2025$307.59 · 7 payments from 5 companies
- 2024$178.76 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Pharmaceuticals, Inc | $143.75 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $76.01 | 3 |
| Sumitomo Pharma America, Inc. | $30.14 | 1 |
| Azurity Pharmaceuticals, Inc. | $29.88 | 1 |
| Cycle Pharmaceuticals Inc | $27.81 | 1 |
What the 2025 payments were for
- Food and Beverage$307.59 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 17 emergency medicine physicians in Templeton · All emergency medicine physicians in California