Joanna May Tozer, LCSW
Clinical Social Worker · San Mateo, CA
Joanna May Tozer, LCSW is a clinical social worker with a practice address in San Mateo, California, and NPI 1144429234, issued on Jul 17, 2007. Check the license (California 26956, 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
- Joanna May Tozer
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 26956 CA
Self-reported in NPPES; status is on the state search - Practice location
- 327 N San Mateo Dr Ste 10, San Mateo, CA 94401
- Phone
- (310) 871-0314
- Enumerated
- Jul 17, 2007
- Record last updated
- Jan 7, 2025
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 36,261 in California → Look up another NPI →
Also registered at 327 N San Mateo Dr Ste 10
A shared address usually means a shared clinic or building; it does not show who employs whom.
- William Bell, LMFT, PH.D.Marriage & Family Therapist1902831878
Verify Joanna May Tozer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 26956Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Joanna May Tozer among 36,261 clinical social worker records in California
Joanna May Tozer, 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 2007, is newer than 9% of them.
- NPI issued2007 · 9% of these records are older, 76% newer
- In a Medicare fileNo · 6% of these records are
- In the CMS Doctors and Clinicians fileNo · 11% of these records are
- Record last updated2025 · 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).
140 clinical social worker records list a practice address in San Mateo
They are 140 of the 3,909 NPPES records with a practice address in San Mateo, 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 Mateo → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Patricia Aguirre, LCSW,PHDSan Mateo, CA 944011164575106
- Ellen Crane, LCSWSan Mateo, CA 944011124439989
- Wendy Daniels, LCSWSan Mateo, CA 944011881711745
- Melina Garcia, ACSWSan Mateo, CA 944011912497074
- Joan Haller, MSWSan Mateo, CA 944011396957353
- Jeffrey Hylton, LCSWSan Mateo, CA 944011104976281
- Robert Livingstone, LCSWSan Mateo, CA 944011003052168
- Jonathan Mitchelmore, LCSWSan Mateo, CA 944011023398963
Common questions
What is Joanna May Tozer, LCSW's NPI number?
Joanna May Tozer, LCSW's National Provider Identifier (NPI) is 1144429234, issued on Jul 17, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Joanna May Tozer, LCSW located?
The NPPES record lists a practice address at 327 N San Mateo Dr Ste 10, San Mateo, CA, 94401. Phone: (310) 871-0314. Providers update this record themselves, so call before visiting.
How can I verify Joanna May Tozer, LCSW's license?
NPPES lists California license number 26956, 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.