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

Andrea H Chang, DO

Individual provider Internal Medicine Physician · NPI 1689065468

Andrea H Chang, DO is an Internal Medicine Physician in Mercer Island, Washington. Licensed in Washington. Registered with an NPI since 2015.

Licensed in
WA
In the registry since
2015
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

3236 78th Ave SE Ste 200
Mercer Island, WA 98040-3500
Phone: (206) 386-9500
Fax: (206) 386-9605
Show map & directions

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

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence OP61199690 (WA)
Internal Medicine Physician Taxonomy 207R00000X · Licence OP61199690 (WA)

Record details

NPI number1689065468
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedFebruary 14, 2015
Last updated in NPPESJuly 24, 2026
Certification dateJuly 24, 2026
Mailing addressPo Box 25608, Salt Lake City, UT 84125-0608

Other providers in Mercer Island