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

Gretchen Zimmermann, RD

Individual provider Registered Dietitian · NPI 1306209051

Gretchen Zimmermann, RD is a Registered Dietitian in San Geronimo, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2016
What do these letters mean?
RD — Registered Dietitian
A credentialed nutrition professional.

See every abbreviation used in this directory →

Practice location Address checks out

23 Hemlock Way
San Geronimo, CA 94963-9244
Phone: (415) 624-4224
Show map & directions

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

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X · Licence 1060223 (CA)

Record details

NPI number1306209051
Entity typeIndividual (Type 1)
GenderFemale
Credentials RD
Sole proprietorYes
NPI enumeratedMarch 31, 2016
Last updated in NPPESMarch 31, 2016