Deborah Marie Diaz, LCSW
Clinical Social Worker · San Mateo, CA
Deborah Marie Diaz, LCSW is a clinical social worker with a practice address in San Mateo, California, and NPI 1043347362, issued on Feb 27, 2007. Check the license (California LCS19630, 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
- Deborah Marie Diaz
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- LCS19630 CA
Self-reported in NPPES; status is on the state search - Practice location
- 438 Sonora Dr, San Mateo, CA 94402
- Phone
- (650) 342-6642
- Enumerated
- Feb 27, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 36,261 in California → Look up another NPI →
Verify Deborah Marie Diaz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license LCS19630Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Deborah Marie Diaz among 36,261 clinical social worker records in California
Deborah Marie Diaz, 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 updated2007 · 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
- Kay Bunnell Coddington, L.C.S.W., A.C.S.W.San Mateo, CA 944021366572273
- Michelle Decorte, R.N., L.C.S.W.San Mateo, CA 944021811946577
- Ericka DiazSan Mateo, CA 944021750635108
- Kassandra Edwards, LCSW, MFTSan Mateo, CA 944021578630745
- Michael Immerman, MSWSan Mateo, CA 944021174703367
- Samantha JohnstonSan Mateo, CA 944021801912209
- Sarah Korsunsky, LCSWSan Mateo, CA 944021568610111
- Selma MangrumSan Mateo, CA 944021003933904
Common questions
What is Deborah Marie Diaz, LCSW's NPI number?
Deborah Marie Diaz, LCSW's National Provider Identifier (NPI) is 1043347362, issued on Feb 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Deborah Marie Diaz, LCSW located?
The NPPES record lists a practice address at 438 Sonora Dr, San Mateo, CA, 94402. Phone: (650) 342-6642. Providers update this record themselves, so call before visiting.
How can I verify Deborah Marie Diaz, LCSW's license?
NPPES lists California license number LCS19630, 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.