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

Dr. Gilmer John Youn, MD

Individual provider Internal Medicine Physician · NPI 1336477926

Dr. Gilmer John Youn, MD is an Internal Medicine in Los Angeles, California. Graduated from University of California, San Diego School of Medicine in 2008, 18 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
18
Trained at
University of California, San Diego School of Medicine
Licensed in
CA
In the registry since
2009
Specialties on file
3
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

5427 Whittier Blvd
Los Angeles, CA 90022-4101
Phone: (323) 869-5448
Fax: (323) 869-5427
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence A110078 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A110078 (CA)
Pediatrics Physician Taxonomy 208000000X · Licence A110078 (CA)

Record details

NPI number1336477926
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedNovember 19, 2009
Last updated in NPPESSeptember 26, 2023
Certification dateJanuary 19, 2023

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesINFECTIOUS DISEASE
Medical schoolUNIVERSITY OF CALIFORNIA, SAN DIEGO SCHOOL OF MEDICINE
Graduated 2008 (18 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 locations4 on file with Medicare

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