Guillermo Alfredo Mendoza Fonseca, M.D.
General Practice Physician · Oviedo, FL
Guillermo Alfredo Mendoza Fonseca, M.D. is a general practice physician with a practice address in Oviedo, Florida, and NPI 1285898288, issued on Jul 18, 2008. Check the license (Florida ME117112, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- Guillermo Alfredo Mendoza Fonseca
- Credential
- M.D.
- Primary taxonomy
- General Practice Physician 208D00000X
- License numbers
- ME117112 FL
MD12761 RI
Self-reported in NPPES; status is on the state search - Practice location
- 2572 W State Road 426 Ste 3040, Oviedo, FL 32765
- Phone
- (407) 890-9748
- Enumerated
- Jul 18, 2008
- Record last updated
- Mar 7, 2023
- Fax
- (407) 890-9819
- Medicaid ID
- 009890300 FL
- Medicare enrollment
- Enrolled (PECOS I20131028000665); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 2,282 in Florida → Look up another NPI →
Verify Guillermo Alfredo Mendoza Fonseca in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license ME117112Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% more Medicare Part D claims than the average general practice physician in 2024
5,435 Medicare Part D claims for 293 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 20 claims were for opioids.
Most prescribed
- Atorvastatin Calcium275 claims
- Prednisone241 claims
- Levothyroxine Sodium232 claims
- Amlodipine Besylate170 claims
- Losartan Potassium166 claims
- Alprazolam144 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $797.61
33 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 4,259 providers of this specialty with any payment received $1,273.40 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Ability Health Services And Rehabilitation LPSanford, FL
- Ability Health Services, IncSanford, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Guillermo Alfredo Mendoza Fonseca among 2,282 general practice physician records in Florida
Guillermo Alfredo Mendoza Fonseca, M.D. is one of 2,282 general practice physician records with a practice address in Florida. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 43% of them.
- NPI issued2008 · 43% of these records are older, 52% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2001 · median 2001 among the 1,142 with a school on file
- Record last updated2023 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
General Practice Physician providers in Florida
There are 2,282 general practice physician records in Florida.
All 2,282 in Florida → Every provider in Oviedo → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Jamal Abusuwa, MDOviedo, FL 327651053310342
- Emma Herrera, MDOviedo, FL 327651376953836
- Viola Jacob, MDOviedo, FL 327651972597193
- Nicole Murray, M.D.Oviedo, FL 327651528472032
- Luis Barba, MDOrange City, FL 327631992178750
- Kris Bly, DOOrange City, FL 327631497700223
- Edgar George, M.D.Orange City, FL 327631841542503
- Travis Herring, M.D.Orange City, FL 327631740374834
Common questions
What is Guillermo Alfredo Mendoza Fonseca, M.D.'s NPI number?
Guillermo Alfredo Mendoza Fonseca, M.D.'s National Provider Identifier (NPI) is 1285898288, issued on Jul 18, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Guillermo Alfredo Mendoza Fonseca, M.D. located?
The NPPES record lists a practice address at 2572 W State Road 426 Ste 3040, Oviedo, FL, 32765. Phone: (407) 890-9748. Providers update this record themselves, so call before visiting.
How can I verify Guillermo Alfredo Mendoza Fonseca, M.D.'s license?
NPPES lists Florida license number ME117112, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Guillermo Alfredo Mendoza Fonseca, M.D. prescribe under Medicare Part D?
In 2024, Guillermo Alfredo Mendoza Fonseca, M.D. had 5,435 Medicare Part D claims for 293 beneficiaries; the average among general practice physician prescribers was 3,030. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.