Dr Robert Thomas Horvat, MD, PHD - Medicare Internal Medicine in Atwater, CA

Dr Robert Thomas Horvat, MD, PHD is a medicare enrolled "Internal Medicine - Endocrinology, Diabetes & Metabolism" physician in Atwater, California. He graduated from medical school in 1987 and has 37 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 3605 Hospital Rd, Endocrine Clinic, Atwater, California. You can reach out to his office (for appointments etc.) via phone at (209) 383-5500.

Dr Robert Thomas Horvat is licensed to practice in California (license number A062483) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1841279668.

Contact Information

Dr Robert Thomas Horvat, MD, PHD
3605 Hospital Rd, Endocrine Clinic,
Atwater, CA 95301-5173
(209) 383-5500
Not Available

Map and Direction




Physician's Profile

Full NameDr Robert Thomas Horvat
GenderMale
SpecialityInternal Medicine
Experience37 Years
Location3605 Hospital Rd, Atwater, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  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: 12/27/2007
  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.
IdentifierTypeStateIssuer
1841279668NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine A062483 (California)Secondary
207RE0101XInternal Medicine - Endocrinology, Diabetes & Metabolism A062483 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
John C Fremont Healthcare DistrictMariposa, CAHospital
Queen Of The Valley Medical CenterNapa, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
John C Fremont Healthcare District589068953315

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 NameJohn C Fremont Healthcare District
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1750504270
PECOS PAC ID: 5890689533
Enrollment ID: O20040212000193

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 AddressPractice Location Address
Dr Robert Thomas Horvat, MD, PHD
3605 Hospital Rd, Endocrine Clinic,
Atwater, CA 95301-5173

Ph: (209) 383-5500
Dr Robert Thomas Horvat, MD, PHD
3605 Hospital Rd, Endocrine Clinic,
Atwater, CA 95301-5173

Ph: (209) 383-5500

Reviews and Comments


Internal Medicine Doctors in Atwater, CA

Dr. Adrian Enad Carreon, M.D.
Endocrinology, Diabetes & Metabolism
Medicare: May Accept Medicare Assignments
Practice Location: 3605 Hospital Rd, Suite F, Atwater, CA 95301
Phone: 209-381-0184    Fax: 209-381-0190

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.