Dorotheea Oana Warmerdam, MD
NPI 1033228739ActiveIndividual· Ophthalmology· Sacramento, CA
Ophthalmology (MD) in Sacramento, California, trained at New York Medical College (class of 2002). Mostly services rather than prescriptions: Medicare paid $7,826 for 52 patients in 2024, with only 43 Part D claims. Genentech, Inc. reported $121.74 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1033228739 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 29, 2006 |
| Last updated in NPPES | Jul 30, 2024 |
| Certified by provider | Jul 30, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | A96243 | 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 | 52 |
|---|---|
| Services billed | 52 across 6 procedure codes |
| Paid by Medicare | $7,826 |
Part D prescriptions in 2024
| Prescriptions (claims) | 43 · 79 30-day fills |
|---|---|
| Patients | 26 |
| Total drug cost | $2,480 |
| Generic share | 72% of claims |
Education and affiliations
| Medical school | New York Medical College |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Ophthalmology |
Medical group
- Vitreo-Retinal Medical Group, Inc.Sacramento, CA · 22 clinicians
Hospital affiliation
- Mercy General HospitalSacramento, CA
Industry payments (Open Payments)
- 2025$121.74 · 1 payment from 1 company
- 2024$672.49 · 7 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genentech, Inc. | $121.74 | 1 |
What the 2025 payments were for
- Food and Beverage$121.74 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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