Matthew Joseph, MD
NPI 1659455624 · Family Medicine Physician · Santa Rosa, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Joseph, MD is a Family Medicine Physician provider in Santa Rosa, CA (NPI 1659455624).
Provider details
- NPI number
- 1659455624
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A66520 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 138 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 525 | 202 |
| Amlodipine Besylate | 263 | 109 |
| Levothyroxine Sodium | 246 | 95 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 240 | 53 |
| Lisinopril | 234 | 91 |
| Losartan Potassium | 200 | 89 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-25
- Last updated
- 2021-12-13
Frequently asked questions
- What is Matthew Joseph's NPI number?
- Matthew Joseph's National Provider Identifier (NPI) is 1659455624, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Joseph's specialty?
- Matthew Joseph is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Joseph located?
- Matthew Joseph's practice location on file with NPPES is 401 Bicentennial Way, Santa Rosa, CA 95403-2149.
- What is Matthew Joseph's phone number?
- The practice phone number listed in the NPPES registry for Matthew Joseph is (707) 571-4000.
- Does Matthew Joseph accept Medicare?
- Matthew Joseph is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Joseph's NPI active?
- Yes — Matthew Joseph's NPI (1659455624) is active in the NPPES registry as of the last update on 2021-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.