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

Dr. Gregory A Demopulos, MD

Individual provider Orthopaedic Surgery Physician · NPI 1194842153

Dr. Gregory A Demopulos, MD is an Orthopaedic Surgery Physician in Mercer Island, Washington. Practices as a sole proprietor. Licensed in Washington.

Licensed in
WA
In the registry since
2007
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

4845 Forest Ave SE
Mercer Island, WA 98040-4601
Phone: (425) 232-3246
Fax: (206) 682-0551
Show map & directions

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

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence MD00034190 (WA)

Record details

NPI number1194842153
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 23, 2007
Last updated in NPPESJuly 9, 2007

Other providers in Mercer Island