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

Denis Mahar

Individual provider Family Medicine Physician · NPI 1841373891

Denis Mahar is an Internal Medicine in Martinez, California. Graduated from Loyola University of Chicago, Stritch School of Medicine in 1992, 34 years ago. Practices as a sole proprietor. Licensed in California.

Years since qualifying
34
Trained at
Loyola University of Chicago, Stritch School of Medicine
Licensed in
CA
In the registry since
2006
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Practice location Address checks out

2500 Alhambra Ave
Martinez, CA 94553-3156
Phone: (925) 370-5110
Fax: (925) 370-5142
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence G77241 (CA)

Record details

NPI number1841373891
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedOctober 23, 2006
Last updated in NPPESJune 5, 2013
Mailing address50 Douglas Dr, Suite 391, Martinez, CA 94553-4098

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolLOYOLA UNIVERSITY OF CHICAGO, STRITCH SCHOOL OF MEDICINE
Graduated 1992 (34 years in practice)
Accepts Medicare assignment Not indicated
Practice locations2 on file with Medicare

Other providers in Martinez