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

Dr. Joseph Martin Litwak, MD

Individual provider Hospitalist Physician · NPI 1396792958

Dr. Joseph Martin Litwak, MD is an Internal Medicine in Oak Bluffs, Massachusetts. Qualified in 1992, 34 years ago. Practices with Upper Connecticut Valley Hospital Association, an 8-clinician group and accepts Medicare assignment. Licensed in North Carolina and New Hampshire.

Years since qualifying
34
Licensed in
NC, NH
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1 Hospital Rd
Oak Bluffs, MA 02557-1406
Phone: (603) 502-4144
Fax: (413) 200-3251
Show map & directions

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

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 14515 (NH)
Hospitalist Physician Taxonomy 208M00000X · Licence 9700642 (NC)

Record details

NPI number1396792958
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 28, 2006
Last updated in NPPESNovember 23, 2020
Certification dateNovember 23, 2020

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1992 (34 years in practice)
Group practice Upper Connecticut Valley Hospital Association — 8 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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