Keith Robert Armstrong, LCSW
Clinical Social Worker · San Francisco, CA
Keith Robert Armstrong, LCSW is a clinical social worker with a practice address in San Francisco, California, and NPI 1659315604, issued on Jun 16, 2006. Check the license (California LCS12962, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Keith Robert Armstrong
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- LCS12962 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4150 Clement St, San Francisco, CA 94121
- Phone
- (415) 750-2190
- Enumerated
- Jun 16, 2006
- Record last updated
- Jul 13, 2026
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 36,261 in California → Look up another NPI →
Also registered at 4150 Clement St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Keith Robert Armstrong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license LCS12962Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Keith Robert Armstrong among 36,261 clinical social worker records in California
Keith Robert Armstrong, LCSW is one of 36,261 clinical social worker records with a practice address in California. 6% 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 under 1% of them.
- NPI issued2006 · under 1% of these records are older, 91% newer
- In a Medicare fileNo · 6% of these records are
- In the CMS Doctors and Clinicians fileNo · 11% of these records are
- Record last updated2026 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,358 clinical social worker records list a practice address in San Francisco
They are 1,358 of the 38,143 NPPES records with a practice address in San Francisco, and 36,261 clinical social worker records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 36,261 in California → Every provider in San Francisco → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Alice Aronow, MSWSan Francisco, CA 941211457378101
- Carrie Bancroft, LCSWSan Francisco, CA 941211336170836
- Lisa Dipko, LCSWSan Francisco, CA 941211952331670
- Paul Erickson, LCSWSan Francisco, CA 941211811924558
- Nancy Johnson, LCSWSan Francisco, CA 941211386660314
- Megan Kossar, L.C.S.W.San Francisco, CA 941211134150519
- Lance Martinson, LCSWSan Francisco, CA 941211326061573
- Kathleen May, LCSWSan Francisco, CA 941211033151725
Common questions
What is Keith Robert Armstrong, LCSW's NPI number?
Keith Robert Armstrong, LCSW's National Provider Identifier (NPI) is 1659315604, issued on Jun 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Keith Robert Armstrong, LCSW located?
The NPPES record lists a practice address at 4150 Clement St, San Francisco, CA, 94121. Phone: (415) 750-2190. Providers update this record themselves, so call before visiting.
How can I verify Keith Robert Armstrong, LCSW's license?
NPPES lists California license number LCS12962, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
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.