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

Marlane K. Fretz, MD

Individual provider Internal Medicine Physician · NPI 1700936523

Marlane K. Fretz, MD is an Internal Medicine Physician in Antioch, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
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

3400 Delta Fair Blvd
Antioch, CA 94509-4004
Phone: (925) 779-5000
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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 G53847 (CA)

Record details

NPI number1700936523
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 12, 2007
Last updated in NPPESJuly 8, 2007

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