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

Julie M. Nefkens, MD

Individual provider Occupational Medicine Physician · NPI 1417029240

Julie M. Nefkens, MD is an Occupational Medicine Physician in Martinez, 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.

See every abbreviation used in this directory →

Practice location Address checks out

200 Muir Rd
Martinez, CA 94553-4614
Phone: (925) 372-1000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Occupational Medicine Physician (primary) Taxonomy 2083X0100X · Licence G71955 (CA)

Record details

NPI number1417029240
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 15, 2006
Last updated in NPPESJanuary 11, 2022

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