Matthew Westfall, DO
NPI 1609361427 · Family Medicine Physician · Ventura, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Westfall, DO is a Family Medicine Physician provider in Ventura, CA (NPI 1609361427).
Provider details
- NPI number
- 1609361427
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 20A18047 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
8 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
853 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 381 | $97 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 238 | $136 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 122 | $139 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 46 | $119 |
| Administration of Influenza Virus VaccineG0008 | 31 | $28 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 108 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 449 | 139 |
| Levothyroxine Sodium | 269 | 81 |
| Amlodipine Besylate | 260 | 78 |
| Lisinopril | 240 | 69 |
| Losartan Potassium | 199 | 61 |
| Rosuvastatin Calcium | 187 | 61 |
| Metformin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$97 across 5 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-06-25
- Last updated
- 2021-09-22
- Certified
- 2021-09-22
Frequently asked questions
- What is Matthew Westfall's NPI number?
- Matthew Westfall's National Provider Identifier (NPI) is 1609361427, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Westfall's specialty?
- Matthew Westfall is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Westfall located?
- Matthew Westfall's practice location on file with NPPES is 2772 Johnson Dr Ste 100, Ventura, CA 93003-7261.
- What is Matthew Westfall's phone number?
- The practice phone number listed in the NPPES registry for Matthew Westfall is (805) 642-1430.
- Does Matthew Westfall accept Medicare?
- Matthew Westfall is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Westfall's NPI active?
- Yes — Matthew Westfall's NPI (1609361427) is active in the NPPES registry as of the last update on 2021-09-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.