Ronald Bjarnason, DO
NPI 1720192685 · Family Medicine Physician · Hilmar, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ronald Bjarnason, DO is a Family Medicine Physician provider in Hilmar, CA (NPI 1720192685).
Provider details
- NPI number
- 1720192685
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 20A5161 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-18
- Last updated
- 2010-02-12
Frequently asked questions
- What is Ronald Bjarnason's NPI number?
- Ronald Bjarnason's National Provider Identifier (NPI) is 1720192685, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ronald Bjarnason's specialty?
- Ronald Bjarnason is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ronald Bjarnason located?
- Ronald Bjarnason's practice location on file with NPPES is 8397 N Lander Ave, Hilmar, CA 95324-0179.
- What is Ronald Bjarnason's phone number?
- The practice phone number listed in the NPPES registry for Ronald Bjarnason is (209) 669-2655.
- Does Ronald Bjarnason accept Medicare?
- Ronald Bjarnason is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ronald Bjarnason's NPI active?
- Yes — Ronald Bjarnason's NPI (1720192685) is active in the NPPES registry as of the last update on 2010-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.