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

Dr. Martin Gelfand, MD

Individual provider Internal Medicine Physician · NPI 1609299841

Dr. Martin Gelfand, MD is an Internal Medicine Physician in Mercer Island, Washington. Practices as a sole proprietor. Licensed in Washington.

Licensed in
WA
In the registry since
2014
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

4640 84th Ave SE
Mercer Island, WA 98040-4321
Phone: (206) 232-2584
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 10737 (WA)

Record details

NPI number1609299841
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJanuary 23, 2014
Last updated in NPPESJanuary 23, 2014

Other providers in Mercer Island