Maria Halvorson, DO
NPI 1164446704ActiveIndividual· Family Medicine· Ojai, CA
Family Medicine (DO) in Ojai, California, trained at College of Osteo Med of the Pacific at Pomona (class of 1998). Their prescriptions cost Medicare Part D more than their services did: $290,821 for 5,132 claims, against $48,507 paid for services in 2024. Novo Nordisk Inc was the largest of 2 companies reporting payments in 2025, $191.64 in all, mostly food and beverage.
Overview
| NPI | 1164446704 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jul 27, 2006 |
| Last updated in NPPES | Jul 8, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 20A7887 | 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 | 278 |
|---|---|
| Services billed | 1,212 across 57 procedure codes |
| Paid by Medicare | $48,507 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,132 · 10,851 30-day fills |
|---|---|
| Patients | 510 |
| Total drug cost | $290,821 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | College of Osteo Med of the Pacific at Pomona |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Valley Oak Family Practice Medical Group IncOjai, CA · 7 clinicians
Hospital affiliations
- Community Memorial Hospital - OjaiOjai, CA
- Community Memorial Hospital - VenturaVentura, CA
Other facilities
- Assisted Home CareHome health agency · Ventura, CA
- Farmer's Home HealthHome health agency · Ventura, CA
- Livingston Memorial Visiting Nurse AssociationHome health agency · Ventura, CA
- Mission Home Health of Ventura, LLCHome health agency · Oxnard, CA
Industry payments (Open Payments)
- 2025$191.64 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $100.40 | 1 |
| Amgen Inc. | $91.24 | 1 |
What the 2025 payments were for
- Food and Beverage$191.64 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 19 family medicine physicians in Ojai · All family medicine physicians in California