Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mr. David A. Besio, MS, RD

Individual provider Registered Dietitian · NPI 1376574657

Mr. David A. Besio, MS, RD is a Registered Dietitian in San Francisco, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
What do these letters mean?
MS — Master of Science
A graduate science degree.
RD — Registered Dietitian
A credentialed nutrition professional.

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Practice location Address checks out

400 Parnassus Ave Fl 4
San Francisco, CA 94143-2202
Phone: (415) 353-4624
Fax: (415) 353-2640
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X · Licence 878011 (CA)

Record details

NPI number1376574657
Entity typeIndividual (Type 1)
GenderMale
Credentials MS , RD
Sole proprietorNo
NPI enumeratedJuly 5, 2006
Last updated in NPPESJuly 8, 2007
Mailing address1635 Divisadero St, Suite 625, Box 1821, San Francisco, CA 94143-0001

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