Nolan Williams
Psychiatry Physician · Napa, CA
Nolan Williams is a psychiatry physician with a practice address in Napa, California, and NPI 1811339641, issued on Jul 22, 2013. Check the license (California A159440, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nolan Williams
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A159440 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1580 1St St, Napa, CA 94559
- Phone
- (707) 258-8757
- Enumerated
- Jul 22, 2013
- Record last updated
- Nov 17, 2025
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 1580 1St St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shan Elahi, MDPsychiatry Physician1982050159
- John Fordham, DOPsychiatry Physician1225464993
- Qyana Griffith, MD, MAPsychiatry Physician1255674495
- Sigurdur Hektorsson, M.D.Psychiatry Physician1447534029
- Micah Hoffman, MDPsychiatry Physician1649565417
- Robert Horon, PHDClinical Psychologist1740473552
Verify Nolan Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A159440Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $163.12
2 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Nolan Williams among 8,673 psychiatry physician records in California
Nolan Williams 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. Its NPI, issued in 2013, is newer than 69% of them.
- NPI issued2013 · 69% of these records are older, 29% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2025 · 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).
97 psychiatry physician records list a practice address in Napa
They are 97 of the 3,583 NPPES records with a practice address in Napa, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Napa → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Angel Aguilera, MDNapa, CA 945591063806743
- Craig Beaty, D.ONapa, CA 945591194787507
- Sarah Ferries, M.D.Napa, CA 945591649284274
- Richard Forde, M.D.Napa, CA 945591033272315
- John Fordham, DONapa, CA 945591225464993
- Qyana Griffith, MD, MANapa, CA 945591255674495
- Sigurdur Hektorsson, M.D.Napa, CA 945591447534029
- Micah Hoffman, MDNapa, CA 945591649565417
Common questions
What is Nolan Williams's NPI number?
Nolan Williams's National Provider Identifier (NPI) is 1811339641, issued on Jul 22, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Nolan Williams located?
The NPPES record lists a practice address at 1580 1St St, Napa, CA, 94559. Phone: (707) 258-8757. Providers update this record themselves, so call before visiting.
How can I verify Nolan Williams's license?
NPPES lists California license number A159440, 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. Medicare files from data.cms.gov. 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.