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

Mr. William Charles Martin, LCSW

Individual provider Clinical Social Worker · NPI 1891861829

Mr. William Charles Martin, LCSW is a Clinical Social Worker in Marathon, Florida. Qualified in 1998, 28 years ago. Accepts Medicare assignment. Licensed in California and Florida.

Years since qualifying
28
Licensed in
CA, FL
In the registry since
2006
Specialties on file
2
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

11400 Overseas Hwy Ste 224
Marathon, FL 33050-3600
Phone: (305) 906-0238
Fax: (305) 434-9040
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence SW 6660 (FL)
Clinical Social Worker Taxonomy 1041C0700X · Licence LCS 21181 (CA)

Record details

NPI number1891861829
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorNo
NPI enumeratedNovember 28, 2006
Last updated in NPPESApril 17, 2013

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)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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