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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARTIN JAY GRUBIN M.D.
NPI 1295908952
Family Medicine in Mission Viejo, CA

Active since April 02, 2008
21411 CYTHERA, MISSION VIEJO, CA 92692(949) 697-0299 Get Directions Write a Review

NPPES record last updated: July 26, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Martin Jay Grubin M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARTIN JAY GRUBIN M.D. (NPI 1295908952) is an individual family medicine provider in Mission Viejo, California, licensed in California (A28649) and active in the NPI registry since April 2008.

NPPES Registry Identity

NPI1295908952
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. MARTIN JAY GRUBINCredential: M.D.
Location Address21411 CYTHERAMission Viejo, CA 92692-5913
Mailing Address21411 CytheraMission Viejo, CA 92692-5913 · (949) 697-0299
Phone(949) 697-0299
Sole ProprietorYes
Enumeration DateApril 2, 2008
Last NPPES UpdateJuly 26, 2026
✔ NPI 1295908952 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · A28649
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
21411 CYTHERA, Mission Viejo, CA 92692
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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Martin Grubin's NPI number?

The NPI number for Martin Grubin is 1295908952. It was assigned to this individual provider in the NPPES registry on April 2, 2008.

Where is Martin Grubin located?

Martin Grubin practices at 21411 Cythera, Mission Viejo, CA 92692. The listed phone number is (949) 697-0299.

What is Martin Grubin's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

When was this NPI record last updated?

The NPPES record for Martin Grubin was last updated on July 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.