Gregory Richard Spencer, M.D.
NPI 1821127770ActiveIndividual· Ophthalmology· Oxnard, CA
Ophthalmology (M.D.) in Oxnard, California, trained at University of California, Geffen School of Medicine (class of 1989). In 2024 Medicare paid $299,695 for 661 patients, and Part D covered 783 of their prescriptions, 44% of them generic. Glaukos Corporation reported $93.13 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1821127770 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Mar 5, 2007 |
| Last updated in NPPES | Sep 26, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | G072734 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Ophthalmology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 661 |
|---|---|
| Services billed | 2,159 across 18 procedure codes |
| Paid by Medicare | $299,695 |
Part D prescriptions in 2024
| Prescriptions (claims) | 783 · 1,219 30-day fills |
|---|---|
| Patients | 223 |
| Total drug cost | $121,313 |
| Generic share | 44% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Ophthalmology |
Medical group
- Paul J Dougherty M D IncCamarillo, CA · 16 clinicians
Industry payments (Open Payments)
- 2025$93.13 · 1 payment from 1 company
- 2024$38.67 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaukos Corporation | $93.13 | 1 |
What the 2025 payments were for
- Food and Beverage$93.13 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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