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

Mary Ellen Liles Lemieux, JD, LCSW

Individual provider Clinical Social Worker · NPI 1134517600

Mary Ellen Liles Lemieux, JD, LCSW is a Clinical Social Worker in Palo Alto, California. Qualified in 2012, 14 years ago. Practices as a sole proprietor, works from 2 locations and accepts Medicare assignment. Licensed in California, Colorado and Utah.

Years since qualifying
14
Licensed in
CA, CO, UT
In the registry since
2015
Specialties on file
3
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

518 Hamilton Ave
Palo Alto, CA 94301-2011
Phone: (650) 346-7698
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 31545 Aspen Ridge Rd, Steamboat Springs, CO 80487-9243 — (650) 346-7698

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 73557 (CA)
Clinical Social Worker Taxonomy 1041C0700X · Licence 11557310-3501 (UT)
Clinical Social Worker Taxonomy 1041C0700X · Licence 09926365 (CO)

Record details

NPI number1134517600
Entity typeIndividual (Type 1)
GenderFemale
Credentials JD , LCSW
Sole proprietorYes
NPI enumeratedJanuary 6, 2015
Last updated in NPPESOctober 26, 2023
Certification dateOctober 26, 2023

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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