Gregory Alan Gilmore, D.O.
NPI 1205271640ActiveIndividual· Internal Medicine, Hematology & Oncology· Corona, CA
Internal Medicine, Hematology & Oncology (D.O.) with City of Hope Medical Foundation, practicing in Corona, California. Their prescriptions cost Medicare Part D more than their services did: $3,076,287 for 1,297 claims, against $118,359 paid for services in 2024. Abbvie Inc. was the largest of 5 companies reporting payments in 2025, $331.06 in all, mostly food and beverage. Lists Corona Regional Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1205271640 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Apr 29, 2013 |
| Last updated in NPPES | Jun 8, 2022 |
| Certified by provider | Jun 8, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 20A13656 | 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 - Hematology/Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 344 |
|---|---|
| Services billed | 1,629 across 16 procedure codes |
| Paid by Medicare | $118,359 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,297 · 1,710 30-day fills |
|---|---|
| Patients | 213 |
| Total drug cost | $3,076,287 |
| Generic share | 80% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- City of Hope Medical FoundationDuarte, CA · 982 clinicians
Hospital affiliations
- Corona Regional Medical CenterCorona, CA
- Riverside Community HospitalRiverside, CA
Industry payments (Open Payments)
- 2025$331.06 · 5 payments from 5 companies
- 2024$57.37 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $124.91 | 1 |
| Pharmaessentia USA Corporation | $108.59 | 1 |
| Astrazeneca Pharmaceuticals LP | $45.35 | 1 |
| Amgen Inc. | $32.72 | 1 |
| Emd Serono, Inc. | $19.49 | 1 |
What the 2025 payments were for
- Food and Beverage$298.34 · 4 payments
- Education$32.72 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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