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

Joyce Michelle Koh, MD

Individual provider Gastroenterology Physician · NPI 1144480484

Joyce Michelle Koh, MD is a Gastroenterology in Hermiston, Oregon. Graduated from Pennsylvania State University College of Medicine in 2008, 18 years ago. Practices with Bronson Methodist Hospital, a 719-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Maryland, Michigan and Oregon.

Years since qualifying
18
Trained at
Pennsylvania State University College of Medicine
Licensed in
MD, MI, OR
In the registry since
2008
Specialties on file
3
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

620 NW 11th St Ste M206
Hermiston, OR 97838-6941
Phone: (541) 667-3804
Fax: (541) 667-0192
Show map & directions

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

Additional practice locations (2)

  • 601 John St Ste M-302, Kalamazoo, MI 49007-5357 — (269) 349-2266
  • 1342 Ne Medical Center Dr Ste 100, Bend, OR 97701-5918 — (541) 706-5777

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence MD212643 (OR)
Gastroenterology Physician Taxonomy 207RG0100X · Licence D0074501 (MD)
Gastroenterology Physician Taxonomy 207RG0100X · Licence 4301510763 (MI)

Record details

NPI number1144480484
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 10, 2008
Last updated in NPPESJune 9, 2026
Certification dateJune 9, 2026
Mailing addressPo Box 18255, Irvine, CA 92623-8255

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolPENNSYLVANIA STATE UNIVERSITY COLLEGE OF MEDICINE
Graduated 2008 (18 years in practice)
Group practice Bronson Methodist Hospital — 719 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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