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

Dr. Leonidas Voltaire Sison Mejia, MD

Individual provider Internal Medicine Physician · NPI 1528170610

Dr. Leonidas Voltaire Sison Mejia, MD is an Internal Medicine Physician in Los Angeles, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2006
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

4075 Whittier Blvd
Los Angeles, CA 90023-2525
Phone: (323) 264-4924
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

General Practice Physician (primary) Taxonomy 208D00000X · Licence A80800 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A80800 (CA)

Record details

NPI number1528170610
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 31, 2006
Last updated in NPPESSeptember 10, 2008

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