John Williams Evans, MD
Psychiatry Physician · Sonoma, CA
John Williams Evans, MD is a psychiatry physician with a practice address in Sonoma, California, and NPI 1093733073, issued on Jul 17, 2006. Check the license (California A23864, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John Williams Evans
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A23864 CA
Self-reported in NPPES; status is on the state search - Practice location
- 670 W Napa St, Sonoma, CA 95476
- Phone
- (707) 933-9757
- Enumerated
- Jul 17, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (707) 939-0688
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Verify John Williams Evans in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A23864Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John Williams Evans among 8,673 psychiatry physician records in California
John Williams Evans, MD is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 67% newer
- In a Medicare fileNo · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2007 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 psychiatry physician records list a practice address in Sonoma
They are 7 of the 395 NPPES records with a practice address in Sonoma, and 8,673 psychiatry physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 8,673 in California → Every provider in Sonoma → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Megan Burns, M.D.Sonoma, CA 954761780737080
- Elena Fowler, MDSonoma, CA 954761457303869
- Soheila Khajavi, MDSonoma, CA 954761942257712
- Richard Kirk, M.D.Sonoma, CA 954761679611750
- Carol Locke, M.D.Sonoma, CA 954761396291225
- Guy Gullion, M. D.Sebastopol, CA 954721457440844
- Barbara McCoard, M.DSebastopol, CA 954721407889561
- Randy Rischette, MDSebastopol, CA 954721467679258
Common questions
What is John Williams Evans, MD's NPI number?
John Williams Evans, MD's National Provider Identifier (NPI) is 1093733073, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Williams Evans, MD located?
The NPPES record lists a practice address at 670 W Napa St, Sonoma, CA, 95476. Phone: (707) 933-9757. Providers update this record themselves, so call before visiting.
How can I verify John Williams Evans, MD's license?
NPPES lists California license number A23864, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.