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

Katharine F Marshall, MD

Individual provider Internal Medicine Physician · NPI 1891143327

Katharine F Marshall, MD is an Internal Medicine in Portland, Oregon. Graduated from Oregon Health Sciences University School of Medicine in 2016, 10 years ago. Practices with Kaiser Foundation Health Plan of the Northwest, a 1,811-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Oregon.

Years since qualifying
10
Trained at
Oregon Health Sciences University School of Medicine
Licensed in
OR
In the registry since
2016
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 →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

3500 N Interstate Ave
Portland, OR 97227-1196
Phone: (800) 813-2000
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (2)

  • 9205 Sw Barnes Rd, Portland, OR 97225 — (503) 216-2621
  • 3181 Sw Sam Jackson Park Rd, Portland, OR 97239-3011 — (503) 494-8562

Specialties & licences

Addiction Medicine (Internal Medicine) Physician (primary) Taxonomy 207RA0401X · Licence MD194144 (OR)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD194144 (OR)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X · Licence PG189357 (OR)

Record details

NPI number1891143327
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 25, 2016
Last updated in NPPESJanuary 14, 2026
Certification dateJanuary 14, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesADDICTION MEDICINE
Medical schoolOREGON HEALTH SCIENCES UNIVERSITY SCHOOL OF MEDICINE
Graduated 2016 (10 years in practice)
Group practice Kaiser Foundation Health Plan Of The Northwest — 1811 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Portland