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

Dr. Martin Jay Grubin, MD

Individual provider Family Medicine Physician · NPI 1295908952

Dr. Martin Jay Grubin, MD is a Family Medicine Physician in Mission Viejo, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2008
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

21411 Cythera
Mission Viejo, CA 92692-5913
Phone: (949) 697-0299
Show map & directions

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence A28649 (CA)

Record details

NPI number1295908952
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 2, 2008
Last updated in NPPESJuly 26, 2026

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