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

Alan G.y. Chang, MD

Individual provider Gastroenterology Physician · NPI 1255398285

Alan G.y. Chang, MD is a Gastroenterology in Bellingham, Washington. Graduated from University of Hawaii John A. Burns School of Medicine in 1989, 37 years ago. Practices with Aspirus Rhinelander and Tomahawk Hospitals and Clinics, Inc, a 554-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
37
Trained at
University of Hawaii John A. Burns School of Medicine
Licensed in
WA
In the registry since
2006
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

3111 Woburn St Ste 201
Bellingham, WA 98226-6610
Phone: (360) 543-5054
Fax: (360) 733-1659
Show map & directions

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

Additional practice locations (1)

  • 1342 Ne Medical Center Dr Ste 100, Bend, OR 97701-5918 — (541) 706-5777

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence MD00036498 (WA)

Record details

NPI number1255398285
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 26, 2006
Last updated in NPPESMay 24, 2023
Certification dateMay 24, 2023

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF HAWAII JOHN A. BURNS SCHOOL OF MEDICINE
Graduated 1989 (37 years in practice)
Group practice Aspirus Rhinelander And Tomahawk Hospitals And Clinics, Inc. — 554 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Other providers in Bellingham