Don J. Nishiguchi, M.D.
NPI 1043368277ActiveIndividual· Obstetrics & Gynecology, Obstetrics· Valencia, CA
Obstetrics & Gynecology, Obstetrics (M.D.) in Valencia, California, trained at Ohio State University College of Medicine (class of 1980). 170 Medicare patients in 2024, $18,594 paid; nearly all of their 218 Part D prescriptions were generic (90%). Mayne Pharma Commercial LLC was the largest of 2 companies reporting payments in 2025, $73.67 in all, mostly food and beverage.
Overview
| NPI | 1043368277 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 5, 2007 |
| Last updated in NPPES | Oct 26, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology, Obstetrics Primary | 207VX0000X | G055628 | 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 | 170 |
|---|---|
| Services billed | 300 across 19 procedure codes |
| Paid by Medicare | $18,594 |
Part D prescriptions in 2024
| Prescriptions (claims) | 218 · 433 30-day fills |
|---|---|
| Patients | 81 |
| Total drug cost | $20,604 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Ohio State University College of Medicine |
|---|---|
| Graduation year | 1980 |
| Medicare specialty | Obstetrics/Gynecology |
Medical groups
- Scct Medical Group PCValencia, CA · 12 clinicians
- Henry Mayo Newhall Clinics LLCValencia, CA · 10 clinicians
Hospital affiliation
- Henry Mayo Newhall HospitalValencia, CA
Industry payments (Open Payments)
- 2025$73.67 · 9 payments from 2 companies
- 2024$166.12 · 8 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Mayne Pharma Commercial LLC | $55.72 | 8 |
| Ethicon US, LLC | $17.95 | 1 |
What the 2025 payments were for
- Food and Beverage$73.67 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Obstetrics & Gynecology, Obstetrics providers in Valencia
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- 1316276942
All Obstetrics & Gynecology, Obstetrics providers in California