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

Dr. David Siegel, MD

Individual provider Internal Medicine Physician · NPI 1023092590

Dr. David Siegel, MD is an Internal Medicine Physician in Mather, California. Licensed in California. Registered with an NPI since 2005.

Licensed in
CA
In the registry since
2005
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

10535 Hospital Way
Mather, CA 95655-4200
Phone: (916) 843-7096
Fax: (916) 366-5475
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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 G39933 (CA)

Record details

NPI number1023092590
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 30, 2005
Last updated in NPPESJuly 13, 2026

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