Guillermo Alfredo Mendoza Fonseca, MD - Medicare Internal Medicine in Oviedo, FL

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Guillermo Alfredo Mendoza Fonseca, MD is a medicare enrolled "General Practice" physician in Oviedo, Florida. He graduated from medical school in 2001 and has 23 years of diverse experience with area of expertise as Internal Medicine. His current practice location is 2572 W State Road 426 Ste 3040, Oviedo, Florida. You can reach out to his office (for appointments etc.) via phone at (407) 890-9748.

Guillermo Alfredo Mendoza Fonseca is licensed to practice in Florida (license number ME117112) 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 1285898288.

Contact Information

Guillermo Alfredo Mendoza Fonseca, MD
2572 W State Road 426 Ste 3040,
Oviedo, FL 32765-8389
(407) 890-9748
(407) 890-9819

Map and Direction




Physician's Profile

Full NameGuillermo Alfredo Mendoza Fonseca
GenderMale
SpecialityInternal Medicine
Experience23 Years
Location2572 W State Road 426 Ste 3040, Oviedo, Florida
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:
  • Guillermo Alfredo Mendoza Fonseca graduated from medical school in 2001
  NPI Data:
  • NPI Number: 1285898288
  • Provider Enumeration Date: 07/18/2008
  • Last Update Date: 03/07/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 3072680115
  • Enrollment ID: I20131028000665

Medical Identifiers

Medical identifiers for Guillermo Alfredo Mendoza Fonseca such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1285898288NPI-NPPES
ME117112OtherFLMEDICAL LICENSE
009890300MedicaidFL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine ME117112 (Florida)Secondary
207R00000XInternal Medicine MD12761 (Rhode Island)Secondary
208D00000XGeneral Practice ME117112 (Florida)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Adventhealth OrlandoOrlando, FLHospital

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. Guillermo Alfredo Mendoza Fonseca allows following entities to bill medicare on his behalf.
Entity NameDr Guillermo Mendoza-int Med-llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1932686003
PECOS PAC ID: 9133464399
Enrollment ID: O20181218000134

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. Guillermo Alfredo Mendoza Fonseca 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
Guillermo Alfredo Mendoza Fonseca, MD
2572 W State Road 426 Ste 3040,
Oviedo, FL 32765-8389

Ph: (407) 890-9748		Guillermo Alfredo Mendoza Fonseca, MD
2572 W State Road 426 Ste 3040,
Oviedo, FL 32765-8389

Ph: (407) 890-9748

Reviews and Comments


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Emma M Herrera, MD
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Practice Location: 7250 Red Bug Lake Rd Ste 1008, Oviedo, FL 32765
Phone: 407-542-0911    Fax: 407-542-0950

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.