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

Dr. Samuel Ethan Marthinsen, DO

Individual provider General Practice Physician · NPI 1861954240

Dr. Samuel Ethan Marthinsen, DO is a General Practice Physician in Oakland, California. Works from 3 locations. Licensed in Arizona.

Licensed in
AZ
In the registry since
2019
Specialties on file
4
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

350 Hawthorne Ave
Oakland, CA 94609-3108
Phone: (510) 869-8751
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • Naval Medical Center San Diego 38400 Bob Wilson Dr, San Diego, CA 92134-5000 — (619) 545-4359
  • Naval Air Station North Island, San Diego, CA 92135 — (619) 545-4359

Specialties & licences

Student in an Organized Health Care Education/Training Program (primary) Taxonomy 390200000X
General Practice Physician Taxonomy 208D00000X · Licence 008509 (AZ)
Military Health Care Provider Taxonomy 171000000X · Licence 008509 (AZ)
Military Health Care Provider Taxonomy 171000000X

Record details

NPI number1861954240
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 3, 2019
Last updated in NPPESApril 9, 2024
Certification dateApril 9, 2024
Mailing address350 Hawthorne Ave, Oakland, CA 94609-3108

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