IndividualActive
Ronald Johnson, M.D.
NPI 1578603122 · General Practice Physician · Chico, CA
Ronald Johnson, M.D. is a General Practice Physician provider in Chico, CA (NPI 1578603122).
Provider details
- NPI number
- 1578603122
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G42116 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
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
376 Vallombrosa Ave
Chico, CA 95926-3900
Phone: (530) 891-1676
Fax: (530) 891-1833
Street-level locationGet directions
Mailing address
376 Vallombrosa Ave
Chico, CA 95926-3900
Registry dates
- Enumerated
- 2007-02-06
- Last updated
- 2007-07-08
Frequently asked questions
- What is Ronald Johnson's NPI number?
- Ronald Johnson's National Provider Identifier (NPI) is 1578603122, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ronald Johnson's specialty?
- Ronald Johnson is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Ronald Johnson located?
- Ronald Johnson's practice location on file with NPPES is 376 Vallombrosa Ave, Chico, CA 95926-3900.
- What is Ronald Johnson's phone number?
- The practice phone number listed in the NPPES registry for Ronald Johnson is (530) 891-1676.
- Is Ronald Johnson's NPI active?
- Yes — Ronald Johnson's NPI (1578603122) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.