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

William Peter Sim, MD

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1902166531

William Peter Sim, MD is an Internal Medicine in Cerritos, California. Graduated from Un of California, Irvine, College of Medicine in 2012, 14 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
14
Trained at
Un of California, Irvine, College of Medicine
Licensed in
CA
In the registry since
2012
Specialties on file
2
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

10820 183rd St Dept OF Internal Medicine
Cerritos, CA 90703-8013
Phone: (562) 653-5000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A130389 (CA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X (CA)

Record details

NPI number1902166531
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 16, 2012
Last updated in NPPESDecember 10, 2021
Certification dateDecember 7, 2021
Mailing address10820 183rd St, Dept Of Internal Medicine, Cerritos, CA 90703-8013

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUN OF CALIFORNIA, IRVINE, COLLEGE OF MEDICINE
Graduated 2012 (14 years in practice)
Group practice Southern California Permanente Medical Group — 11242 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Cerritos