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

Martin F Hammar, LISW

Individual provider Clinical Social Worker · NPI 1093850034

Martin F Hammar, LISW is a Clinical Social Worker in Athens, Ohio. Qualified in 2013, 13 years ago. Practices with Hocking Valley Medical Group, Inc, a 21-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
13
Licensed in
OH
In the registry since
2007
What do these letters mean?
LISW — Licensed Independent Social Worker
A social worker licensed to practise independently.

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Practice location Address checks out

90 Hospital Dr
Athens, OH 45701-2301
Phone: (740) 593-3682
Fax: (740) 594-5642
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence I.1500455 (OH)

Record details

NPI number1093850034
Entity typeIndividual (Type 1)
GenderMale
Credentials LISW
Sole proprietorNo
NPI enumeratedFebruary 20, 2007
Last updated in NPPESNovember 12, 2020
Certification dateNovember 12, 2020

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Hocking Valley Medical Group, Inc. — 21 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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