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

Dr. Jacob Petersen Chaffee, MD

Individual provider Obstetrics Physician · NPI 1811983562

Dr. Jacob Petersen Chaffee, MD is a Family Practice in Grand Coulee, Washington. Graduated from University of Washington School of Medicine in 2001, 25 years ago. Practices with Douglas, Grant, Lincoln and Okanogan Counties Public Hospital District, a 40-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
25
Trained at
University of Washington School of Medicine
Licensed in
WA
In the registry since
2005
Specialties on file
2
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

411 Fortuyn Rd
Grand Coulee, WA 99133-8718
Phone: (509) 633-1753
Fax: (509) 633-1933
Show map & directions

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

Additional practice locations (1)

  • 411 Fortuyn Rd, Grand Coulee, WA 99133-8718 — (509) 633-1753

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence MD00042597 (WA)
Obstetrics Physician Taxonomy 207VX0000X · Licence MD00042597 (WA)

Record details

NPI number1811983562
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 27, 2005
Last updated in NPPESMarch 14, 2018
Mailing address411 Fortuyn Rd, Grand Coulee, WA 99133-8718

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF WASHINGTON SCHOOL OF MEDICINE
Graduated 2001 (25 years in practice)
Group practice Douglas, Grant, Lincoln And Okanogan Counties Public Hospital District — 40 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount