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

Gary L Treece, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1447269857

Gary L Treece, MD is an Endocrinology in Yakima, Washington. Graduated from University of California, Irvine, California College of Medicine in 1971, 55 years ago. Practices with Shc Medical Center Toppenish, a 41-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
55
Trained at
University of California, Irvine, California College 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

209 S 12th Ave
Yakima, WA 98902-3110
Phone: (509) 577-4600
Fax: (509) 577-4619
Show map & directions

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

Additional practice locations (2)

  • 2705 E Lincoln Ave, Sunnyside, WA 98944-4006 — (509) 836-4848
  • 1420 Ahtanum Ridge Dr, Union Gap, WA 98903-1839 — (509) 454-7700

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence MD.MD.00022600 (WA)

Record details

NPI number1447269857
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 5, 2006
Last updated in NPPESAugust 4, 2026
Certification dateAugust 4, 2026
Mailing address732 Summitview Ave # 621, Yakima, WA 98902-3032

Medicare enrollment

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

Medicare specialtyENDOCRINOLOGY
Medical schoolUNIVERSITY OF CALIFORNIA, IRVINE, CALIFORNIA COLLEGE OF MEDICINE
Graduated 1971 (55 years in practice)
Group practice Shc Medical Center Toppenish — 41 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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