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

Leonard Mark Oestreicher, MD

Individual provider Family Medicine Physician · NPI 1033212022

Leonard Mark Oestreicher, MD is a Family Medicine Physician in Merced, California. Licensed in California. Registered with an NPI since 2006.

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

374 W Olive Ave Ste B
Merced, CA 95348
Phone: (209) 383-3076
Fax: (209) 383-6301
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence G29861 (CA)

Record details

NPI number1033212022
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 6, 2006
Last updated in NPPESDecember 11, 2020
Certification dateDecember 11, 2020

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