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

Dr. David Richard Ernst, MD

Individual provider Internal Medicine Physician · NPI 1720178411

Dr. David Richard Ernst, MD is an Internal Medicine Physician in Greenbrae, 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

250 Bon Air Rd
Greenbrae, CA 94904-1702
Phone: (415) 448-1500
Fax: (415) 461-4229
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G48002 (CA)

Record details

NPI number1720178411
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 13, 2006
Last updated in NPPESJuly 8, 2007
Mailing address300 Professional Center Dr, Suite 311, Novato, CA 94947-4334

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