Matthew Westfall, DO
NPI 1609361427ActiveIndividual· Family Medicine· Ventura, CA
Family Medicine (DO) in Ventura, California, trained at Touro Un College of Osteopathic Medicine, Vallejo (class of 2018). Their prescriptions cost Medicare Part D more than their services did: $380,452 for 5,415 claims, against $78,532 paid for services in 2024. Dexcom, Inc. was the largest of 9 companies reporting payments in 2025, $438.35 in all, mostly food and beverage.
Overview
| NPI | 1609361427 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jun 25, 2018 |
| Last updated in NPPES | Sep 22, 2021 |
| Certified by provider | Sep 22, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 20A18047 | 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 | 384 |
|---|---|
| Services billed | 1,006 across 35 procedure codes |
| Paid by Medicare | $78,532 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,415 · 13,097 30-day fills |
|---|---|
| Patients | 680 |
| Total drug cost | $380,452 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | Touro Un College of Osteopathic Medicine, Vallejo |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Primary Medical Group of Ventura County IncVentura, CA · 41 clinicians
Hospital affiliations
- Community Memorial Hospital - VenturaVentura, CA
- St Johns Regional Medical CenterOxnard, CA
Other facilities
- Assisted Home CareHome health agency · Ventura, CA
- Excellent In-Home Care, IncHome health agency · Woodland Hills, CA
- Las Posas Home Health ServicesHome health agency · Camarillo, CA
- Livingston Memorial Visiting Nurse AssociationHome health agency · Ventura, CA
Industry payments (Open Payments)
- 2025$438.35 · 18 payments from 9 companies
- 2024$97.10 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Dexcom, Inc. | $97.13 | 3 |
| Lilly USA, LLC | $70.26 | 3 |
| Gilead Sciences, Inc. | $62.05 | 2 |
| Astrazeneca Pharmaceuticals LP | $60.77 | 3 |
| Amgen Inc. | $49.60 | 2 |
What the 2025 payments were for
- Food and Beverage$438.35 · 18 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 261 family medicine physicians in Ventura · All family medicine physicians in California