Sanford Chen, M.D.
NPI 1427051994ActiveIndividual· Ophthalmology· Santa Ana, CA
Ophthalmology (M.D.) in Santa Ana, California, trained at University of Michigan Medical School (class of 1987). In 2024 Medicare paid $3,126,298 for 890 patients, and Part D covered 329 of their prescriptions, 41% of them generic. Astellas Pharma US Inc was the largest of 21 companies reporting payments in 2025, $30,307 in all, mostly speaking and faculty fees.
Overview
| NPI | 1427051994 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 27, 2005 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | G077086 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 890 |
|---|---|
| Services billed | 192,829 across 54 procedure codes |
| Paid by Medicare | $3,126,298 |
Part D prescriptions in 2024
| Prescriptions (claims) | 329 · 461 30-day fills |
|---|---|
| Patients | 100 |
| Total drug cost | $45,640 |
| Generic share | 41% of claims |
Education and affiliations
| Medical school | University of Michigan Medical School |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Ophthalmology |
Medical group
- Orange County Retina Medical GroupFullerton, CA · 5 clinicians
Industry payments (Open Payments)
- 2025$30,307 · 146 payments from 21 companies
- 2024$43,682 · 138 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $17,935 | 27 |
| Regeneron Healthcare Solutions, Inc. | $4,458 | 20 |
| Ocular Therapeutix, Inc. | $3,317 | 9 |
| Onmark, Inc. | $1,360 | 9 |
| Alcon Vision LLC | $761.05 | 11 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$15,600 · 3 payments
- Food and Beverage$5,562 · 128 payments
- Travel and Lodging$5,278 · 14 payments
- Consulting Fee$3,868 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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