Katya Adachi Serrano, MD
NPI 1215227244ActiveIndividual· Family Medicine· Santa Maria, CA
Family Medicine (MD) in Santa Maria, California, trained at University of California, San Francisco School of Medicine (class of 2011). Their prescriptions cost Medicare Part D more than their services did: $169,006 for 1,142 claims, against $541.73 paid for services in 2024. Gilead Sciences, Inc. reported $27.30 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1215227244 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 11, 2011 |
| Last updated in NPPES | Aug 4, 2026 |
| Certified by provider | Aug 4, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | A124695 | CA |
| Preventive Medicine, Addiction Medicine | 2083A0300X | A124695 | CA |
| Integrative Medicine | 202D00000X | A124695 | 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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 30 |
|---|---|
| Services billed | 55 across 13 procedure codes |
| Paid by Medicare | $541.73 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,142 · 1,963 30-day fills |
|---|---|
| Patients | 78 |
| Total drug cost | $169,006 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | University of California, San Francisco School of Medicine |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Family Practice |
Medical group
- Santa Barbara County AuditorSanta Barbara, CA · 97 clinicians
Hospital affiliation
- Marian Regional Medical CenterSanta Maria, CA
Other facilities
- Central Coast Home Health IncHome health agency · San Luis Obispo, CA
- Dignity Health Home HealthHome health agency · Santa Maria, CA
Industry payments (Open Payments)
- 2025$27.30 · 1 payment from 1 company
- 2024$60.51 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $27.30 | 1 |
What the 2025 payments were for
- Food and Beverage$27.30 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 101 family medicine physicians in Santa Maria · All family medicine physicians in California