Angela Yat-Sun Nishio, M.D.
NPI 1053320242ActiveIndividual· Obstetrics & Gynecology· Santa Monica, CA
Obstetrics & Gynecology (M.D.) in Santa Monica, California, trained at R Franklin University of Med & Sci/Chicago Medical School (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $53,988 for 466 claims, against $18,353 paid for services in 2024. Mayne Pharma Commercial LLC was the largest of 11 companies reporting payments in 2025, $682.50 in all, mostly food and beverage.
Overview
| NPI | 1053320242 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 5, 2006 |
| Last updated in NPPES | Nov 28, 2022 |
| Certified by provider | Nov 28, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | A067519 | 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 - Obstetrics/Gynecology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 206 |
|---|---|
| Services billed | 407 across 22 procedure codes |
| Paid by Medicare | $18,353 |
Part D prescriptions in 2024
| Prescriptions (claims) | 466 · 1,101 30-day fills |
|---|---|
| Patients | 129 |
| Total drug cost | $53,988 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | R Franklin University of Med & Sci/Chicago Medical School |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Obstetrics/Gynecology |
| Telehealth | Offers telehealth |
Medical group
- Providence Saint Johns Medical FoundationSanta Monica, CA · 281 clinicians
Hospital affiliation
- Saint John's Health CenterSanta Monica, CA
Industry payments (Open Payments)
- 2025$682.50 · 35 payments from 11 companies
- 2024$346.96 · 15 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Mayne Pharma Commercial LLC | $267.93 | 11 |
| Sage Therapeutics, LLC | $135.38 | 6 |
| Hologic Sales and Service, LLC | $56.55 | 2 |
| Sumitomo Pharma America, Inc. | $46.01 | 2 |
| Millicent US Inc | $39.02 | 2 |
What the 2025 payments were for
- Food and Beverage$682.50 · 35 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other OB-GYNs in Santa Monica
- 1053572107
- 1073562203
- 1083931521
- 1114005691
- 1114555612
- 1164953030
- 1194733014
- 1225120348
- 1235615303
- 1245421486
- 1366561433
- 1407008907