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

Dr. Robert Thomas Horvat, MD, PHD

Individual provider Emergency Medicine Physician · NPI 1841279668

Dr. Robert Thomas Horvat, MD, PHD is an Internal Medicine in Mariposa, California. Qualified in 1987, 39 years ago. Practices as a sole proprietor. Licensed in California.

Years since qualifying
39
Licensed in
CA
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

5189 Hospital Rd
Mariposa, CA 95338-9524
Phone: (209) 966-2154
Fax: (866) 206-1883
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence A062483 (CA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence A062483 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A62483 (CA)

Record details

NPI number1841279668
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorYes
NPI enumeratedJanuary 10, 2006
Last updated in NPPESMay 14, 2026
Certification dateMay 14, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1987 (39 years in practice)
Accepts Medicare assignment Not indicated
Practice locations4 on file with Medicare

Other providers in Mariposa