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

Dr. Erwin Sebastian Ong, MD

Individual provider General Acute Care Hospital · NPI 1821287285

Dr. Erwin Sebastian Ong, MD is a General Surgery in Bellflower, California. Graduated from University of California, Irvine, California College of Medicine in 2007, 19 years ago. Practices with Southern California Permanente Medical Group, an 11,242-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
19
Trained at
University of California, Irvine, California College of Medicine
Licensed in
CA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

9400 Rosecrans Ave
Bellflower, CA 90706-2246
Phone: (800) 823-4040
Show map & directions

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

Specialties & licences

General Acute Care Hospital (primary) Taxonomy 282N00000X · Licence A107476 (CA)

Record details

NPI number1821287285
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedOctober 22, 2007
Last updated in NPPESNovember 23, 2021
Certification dateNovember 23, 2021
Mailing address9400 Rosecrans Ave, Bellflower, CA 90706-2246

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolUNIVERSITY OF CALIFORNIA, IRVINE, CALIFORNIA COLLEGE OF MEDICINE
Graduated 2007 (19 years in practice)
Group practice Southern California Permanente Medical Group — 11242 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Other providers in Bellflower