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

Steven J Koga, MD

Individual provider Internal Medicine Physician · NPI 1144275512

Steven J Koga, MD is an Internal Medicine in Caldwell, Idaho. Graduated from University of Texas Southwestern Medical School at Dallas in 1991, 35 years ago. Practices with West Valley Medical Group LLC, a 9-clinician group and accepts Medicare assignment. Licensed in Idaho.

Years since qualifying
35
Trained at
University of Texas Southwestern Medical School at Dallas
Licensed in
ID
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 →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1906 Fairview Ave Ste 230
Caldwell, ID 83605-5432
Phone: (208) 459-4667
Fax: (208) 459-3372
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence M6779 (ID)

Record details

NPI number1144275512
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 24, 2006
Last updated in NPPESJanuary 28, 2022
Certification dateNovember 27, 2020
Mailing addressPo Box 277976, Atlanta, GA 30384-7976

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL SCHOOL AT DALLAS
Graduated 1991 (35 years in practice)
Group practice West Valley Medical Group Llc — 9 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Caldwell