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

Mr. Edward Ungseok Oh, MD

Individual provider Internal Medicine Physician · NPI 1376284026

Mr. Edward Ungseok Oh, MD is an Internal Medicine in Fontana, California. Qualified in 2017, 9 years ago. Practices with Southern California Permanente Medical Group, an 11,242-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
9
Licensed in
CA
In the registry since
2022
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

9961 Sierra Ave
Fontana, CA 92335-6720
Phone: (909) 427-5000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 2295 S Vineyard Ave, Ontario, CA 91761-7925 — (883) 357-4227
  • 18300 Ca-18, Victorville, CA 92307 — (176) 024-2231

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A203095 (CA)

Record details

NPI number1376284026
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 6, 2022
Last updated in NPPESOctober 31, 2025
Certification dateOctober 31, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Southern California Permanente Medical Group — 11242 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Fontana