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

Harris Avery Masket, MD

Individual provider Sports Medicine (Internal Medicine) Physician · NPI 1801921218

Harris Avery Masket, MD is a Sports Medicine (Internal Medicine) Physician in Mill Valley, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
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

100 Shoreline Highway 210A
Mill Valley, CA 94941
Phone: (415) 388-5520
Fax: (415) 388-5503
Show map & directions

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

Specialties & licences

Sports Medicine (Internal Medicine) Physician (primary) Taxonomy 207RS0010X · Licence A74623 (CA)

Record details

NPI number1801921218
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 23, 2007
Last updated in NPPESOctober 21, 2024
Certification dateDecember 19, 2023