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Francis Muller, Jr., M.D.
NPI 1427078591 · Psychiatry Physician · Vallejo, CA
Francis Muller, Jr., M.D. is a Psychiatry Physician provider in Vallejo, CA (NPI 1427078591).
Provider details
- NPI number
- 1427078591
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A22767 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 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
525 Oregon St
Vallejo, CA 94590-3201
Phone: (707) 648-2200
Street-level locationGet directions
Mailing address
Po Box 814
Nicasio, CA 94946-0814
Registry dates
- Enumerated
- 2006-07-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is Francis Muller, Jr.'s NPI number?
- Francis Muller, Jr.'s National Provider Identifier (NPI) is 1427078591, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Francis Muller, Jr.'s specialty?
- Francis Muller, Jr. is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Francis Muller, Jr. located?
- Francis Muller, Jr.'s practice location on file with NPPES is 525 Oregon St, Vallejo, CA 94590-3201.
- What is Francis Muller, Jr.'s phone number?
- The practice phone number listed in the NPPES registry for Francis Muller, Jr. is (707) 648-2200.
- Is Francis Muller, Jr.'s NPI active?
- Yes — Francis Muller, Jr.'s NPI (1427078591) 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.