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

Jonathan Henry Segal, MD

Individual provider Nephrology Physician · NPI 1780666164

Jonathan Henry Segal, MD is a Nephrology Physician in Martinez, 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.

See every abbreviation used in this directory →

Practice location Address checks out

150 Muir Rd
Martinez, CA 94553-4668
Phone: (925) 372-4610
Fax: (925) 372-2804
Show map & directions

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

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence G59448 (CA)

Record details

NPI number1780666164
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 18, 2005
Last updated in NPPESJuly 13, 2026
Mailing address150 Muir Rd, Martinez, CA 94553-4668