Registry data as of Aug 27, 2026

William Armstrong, MSW

Mental Health Counselor · Ukiah, CA

William Armstrong, MSW is a mental health counselor with a practice address in Ukiah, California, and NPI 1841443389, issued on Oct 28, 2008. Check the license with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, loaded Aug 27, 2026 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1841443389
Name
William Armstrong
Credential
MSW
Primary taxonomy
Mental Health Counselor 101YM0800X
Practice location
780 S Dora St, Ukiah, CA 95482
Phone
(707) 472-2922
Enumerated
Oct 28, 2008
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 780 S Dora St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Denise AddisonRehabilitation Practitioner1508098229
  2. Loretta AlexanderCase Manager/Care Coordinator1194241406
  3. Micah AllisonCommunity Health Worker1568985687
  4. Christine AmadorRehabilitation Practitioner1508575341
  5. Dawn AmaralRehabilitation Practitioner1821782970
  6. Heath BirilliRehabilitation Practitioner1093309171

Verify William Armstrong in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

78 mental health counselor records list a Ukiah practice address

They are 78 of the 1,439 NPPES records with a Ukiah practice address, and 35,738 mental health counselor records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other mental health counselor records in California

  1. Rita A Wilborne, MHRSSan Jose, CA1649315763
  2. Katie AabSalinas, CA1205257284
  3. Kayla Aanerud, B.A.Rio Linda, CA1649622101
  4. La Shaun AaronCamarillo, CA1740469717
  5. Tamika AaronInglewood, CA1245550284
  6. Tamara AasenCamarillo, CA1912255035
  7. Hanna AbaataSan Leandro, CA1659913572
  8. Analyn AbadSan Carlos, CA1467065946
  9. Edname AbadLemon Grove, CA1356647812
  10. Taliana AbadiSan Diego, CA1568260271

Common questions

What is William Armstrong, MSW's NPI number?

William Armstrong, MSW's National Provider Identifier (NPI) is 1841443389, issued on Oct 28, 2008. An NPI identifies a provider in billing; it is not a license.

Where is William Armstrong, MSW located?

The NPPES record lists a practice address at 780 S Dora St, Ukiah, CA, 95482. Phone: (707) 472-2922. Providers update this record themselves, so call before visiting.

How can I verify William Armstrong, MSW's license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.