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

Individual provider Internal Medicine Physician · NPI 1871606434

Oliver Lee Mason, MD is an Internal Medicine in Cerritos, California. Graduated from University of California, San Francisco School of Medicine in 1984, 42 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in California.

Years since qualifying
42
Trained at
University of California, San Francisco School of Medicine
Licensed in
CA
In the registry since
2006
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

10802 College Pl
Cerritos, CA 90703-1505
Phone: (562) 982-0010
Fax: (562) 982-0012
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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 G56462 (CA)

Record details

NPI number1871606434
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 17, 2006
Last updated in NPPESFebruary 4, 2016

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF CALIFORNIA, SAN FRANCISCO SCHOOL OF MEDICINE
Graduated 1984 (42 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Cerritos