Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Sigrid Mergenthaler, LICSW

Individual provider Clinical Social Worker · NPI 1477759017

Sigrid Mergenthaler, LICSW is a Clinical Social Worker in San Marcos, California. Qualified in 1998, 28 years ago. Practices with North County Health Project Inc, a 75-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California and Massachusetts.

Years since qualifying
28
Licensed in
CA, MA
In the registry since
2007
Specialties on file
2
What do these letters mean?
LICSW — Licensed Independent Clinical Social Worker
The title some states use for an independently practising clinical social worker.

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Practice location Address checks out

150 Valpreda Rd
San Marcos, CA 92069-2973
Phone: (760) 736-6767
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 400 Washington St, Braintree, MA 02184-4729 — (781) 843-3783

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence LCSW123604 (CA)
Clinical Social Worker Taxonomy 1041C0700X · Licence 114737 (MA)

Record details

NPI number1477759017
Entity typeIndividual (Type 1)
GenderFemale
Credentials LICSW
Sole proprietorNo
NPI enumeratedJune 21, 2007
Last updated in NPPESAugust 13, 2024
Certification dateAugust 13, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 1998 (28 years in practice)
Group practice North County Health Project Inc — 75 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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