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

Douglas M. Olken, MD

Individual provider Family Medicine Physician · NPI 1538217427

Douglas M. Olken, MD is a Family Practice in Harbor City, California. Graduated from R Franklin University of Med & SCI/Chicago Medical School in 1995, 31 years ago. Practices with Southern California Permanente Medical Group, an 11,242-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
31
Trained at
R Franklin University of Med & SCI/Chicago Medical School
Licensed in
CA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

25825 Vermont Ave
Harbor City, CA 90710-3518
Phone: (310) 325-5111
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence A61072 (CA)

Record details

NPI number1538217427
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 8, 2007
Last updated in NPPESDecember 2, 2021

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolR FRANKLIN UNIVERSITY OF MED & SCI/CHICAGO MEDICAL SCHOOL
Graduated 1995 (31 years in practice)
Group practice Southern California Permanente Medical Group — 11242 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Other providers in Harbor City