Marguerite S. Widener, LCSW
Clinical Social Worker · San Marcos, CA
Marguerite S. Widener, LCSW is a clinical social worker with a practice address in San Marcos, California, and NPI 1508959594, issued on Oct 2, 2006. Check the license (California 73336, 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
- Marguerite S. Widener
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License numbers
- 73336 CA
C005467 NC
Self-reported in NPPES; status is on the state search - Practice location
- 1582 W San Marcos Blvd Ste 105, San Marcos, CA 92078
- Phone
- (760) 522-0710
- Enumerated
- Oct 2, 2006
- Record last updated
- Aug 2, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicaid ID
- 6106520 NC
- Medicare enrollment
- Enrolled (PECOS I20161103001131); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 36,261 in California → Look up another NPI →
Also registered at 1582 W San Marcos Blvd Ste 105
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Teri Davis, ED.D., LCSWClinical Social Worker1669825956
- Kelly Kaitson, LCSWClinical Social Worker1447764147
- Kristina Leo-Castillo, LMTMassage Therapist1235753120
- Amy Nitecki, OTR/LNeurorehabilitation Occupational Therapist1396460440
- Jaclyn SchwartzMarriage & Family Therapist1477785871
Verify Marguerite S. Widener in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 73336Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Marguerite S. Widener among 36,261 clinical social worker records in California
Marguerite S. Widener, 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 fileYes · 11% of these records are
- Graduated1997 · median 2012 among the 4,008 with a school on file
- Record last updated2018 · 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).
71 clinical social worker records list a practice address in San Marcos
They are 71 of the 1,985 NPPES records with a practice address in San Marcos, 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 Marcos → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Melissa Barsotti, LCSWSan Marcos, CA 920781043419195
- Danielle Burns, PHD, LCSWSan Marcos, CA 920781477810984
- Michelle Colarusso, LCSWSan Marcos, CA 920781568704807
- Teri Davis, ED.D., LCSWSan Marcos, CA 920781669825956
- Alexandra Donnelly, LCSWSan Marcos, CA 920781457401689
- Tamera Fleck, LCSWSan Marcos, CA 920781053649681
- Margaret Gonzalez, LCSWSan Marcos, CA 920781730213265
- Sarah Jayyousi, LCSWSan Marcos, CA 920781437190808
Common questions
What is Marguerite S. Widener, LCSW's NPI number?
Marguerite S. Widener, LCSW's National Provider Identifier (NPI) is 1508959594, issued on Oct 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marguerite S. Widener, LCSW located?
The NPPES record lists a practice address at 1582 W San Marcos Blvd Ste 105, San Marcos, CA, 92078. Phone: (760) 522-0710. Providers update this record themselves, so call before visiting.
How can I verify Marguerite S. Widener, LCSW's license?
NPPES lists California license number 73336, 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.