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

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1669763439

Dr. Stephen Ou, MD is an Internal Medicine in Diamond Bar, California. Graduated from University of Rochester School of Medicine and Dentistry in 2011, 15 years ago. Practices with Southern California Permanente Medical Group, an 11,242-clinician group and accepts Medicare assignment.

Years since qualifying
15
Trained at
University of Rochester School of Medicine and Dentistry
In the registry since
2011
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

2582 Steeplechase Ln
Diamond Bar, CA 91765-3621
Phone: (909) 612-4390
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Student in an Organized Health Care Education/Training Program (primary) Taxonomy 390200000X

Record details

NPI number1669763439
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 27, 2011
Last updated in NPPESDecember 6, 2021
Certification dateDecember 6, 2021
Mailing address2582 Steeplechase Ln, Diamond Bar, CA 91765-3621

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesENDOCRINOLOGY
Medical schoolUNIVERSITY OF ROCHESTER SCHOOL OF MEDICINE AND DENTISTRY
Graduated 2011 (15 years in practice)
Group practice Southern California Permanente Medical Group — 11242 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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