Dr Robert Thomas Horvat, MD, PHD is a medicare enrolled "Internal Medicine - Endocrinology, Diabetes & Metabolism" physician in Mariposa, California. He graduated from medical school in 1987 and has 39 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice John C Fremont Healthcare District and his current practice location is
5189 Hospital Rd, Mariposa, California. You can reach out to his office (for appointments etc.) via phone at
(209) 966-2154.
Dr Robert Thomas Horvat is licensed to practice in California (license number A062483) and he also participates in the medicare program. He
may accept medicare assignments (which means he may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance) and his NPI Number is 1841279668.
Physician's Profile
| Full Name | Dr Robert Thomas Horvat |
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| Gender | Male |
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| Speciality | Internal Medicine |
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| Experience | 39 Years |
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| Location | 5189 Hospital Rd, Mariposa, California |
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| Accepts Medicare Assignments | May be. He may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance. |
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Medical Education and Training:
- Dr Robert Thomas Horvat graduated from medical school in 1987
NPI Data:
- NPI Number: 1841279668
- Provider Enumeration Date: 01/10/2006
- Last Update Date: 05/14/2026
Medicare PECOS Information:
- PECOS PAC ID: 6608843370
- Enrollment ID: I20040913000669
Medical Identifiers
Medical identifiers for Dr Robert Thomas Horvat such as npi, medicare ID, medicare PIN, medicaid, etc.
| Identifier | Type | State | Issuer |
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| 1841279668 | NPI | - | NPPES |
Medical Taxonomies and Licenses
| Taxonomy | Type | License (State) | Status |
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| 207P00000X | Emergency Medicine | A062483 (California) | Secondary |
| 207RE0101X | Internal Medicine - Endocrinology, Diabetes & Metabolism | A062483 (California) | Primary |
| 207R00000X | Internal Medicine | A62483 (California) | Secondary |
Medical Facilities Affiliation
Medicare Reassignments
Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Robert Thomas Horvat allows following entities to bill medicare on his behalf.
| Entity Name | John C Fremont Healthcare District |
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| Entity Type | Part B Supplier - Clinic/group Practice |
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| Entity Identifiers | NPI Number: 1750504270
PECOS PAC ID: 5890689533
Enrollment ID: O20040212000193 |
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Medicare Part D Prescriber Enrollment
Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Robert Thomas Horvat is
enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.
Mailing Address and Practice Location
| Mailing Address | Practice Location Address |
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Dr Robert Thomas Horvat, MD, PHD
2984 M St,
Merced, CA 95348-3214
Ph: (415) 265-5000 | Dr Robert Thomas Horvat, MD, PHD
5189 Hospital Rd,
Mariposa, CA 95338-9524
Ph: (209) 966-2154 |
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