Anna Marie Antonowich, MSN, NP-BC
NPI 1215063268ActiveIndividual· Nurse Practitioner, Family· Ukiah, CA
Nurse Practitioner, Family (MSN, NP-BC) with Ukiah Adventist Hospital, practicing in Ukiah, California. Their prescriptions cost Medicare Part D more than their services did: $331,387 for 484 claims, against $52,966 paid for services in 2024. Astellas Pharma US Inc was the largest of 29 companies reporting payments in 2025, $1,735 in all, mostly food and beverage. Lists Adventist Health Clearlake and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1215063268 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MSN, NP-BC |
| Sole proprietor | No |
| NPI issued | Feb 26, 2007 |
| Last updated in NPPES | Mar 22, 2023 |
| Certified by provider | Mar 22, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 13718 | 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 - Nurse Practitioner (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 444 |
|---|---|
| Services billed | 852 across 10 procedure codes |
| Paid by Medicare | $52,966 |
Part D prescriptions in 2024
| Prescriptions (claims) | 484 · 631 30-day fills |
|---|---|
| Patients | 165 |
| Total drug cost | $331,387 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2002 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Ukiah Adventist HospitalUkiah, CA · 135 clinicians
Hospital affiliations
- Adventist Health ClearlakeClearlake, CA
- Adventist Health Howard MemorialWillits, CA
- Adventist Health Mendocino CoastFort Bragg, CA
- Adventist Health Ukiah ValleyUkiah, CA
- Sutter Lakeside HospitalLakeport, CA
Industry payments (Open Payments)
- 2025$1,735 · 66 payments from 29 companies
- 2024$966.73 · 45 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $345.88 | 6 |
| Merck Sharp & Dohme LLC | $185.78 | 8 |
| Astrazeneca Pharmaceuticals LP | $112.40 | 4 |
| Glaxosmithkline, LLC. | $101.64 | 5 |
| E.R. Squibb & Sons, L.L.C. | $100.88 | 4 |
What the 2025 payments were for
- Food and Beverage$1,426 · 62 payments
- Education$308.96 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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