Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Guillermo Antonio Fonseca, MD

Individual provider Family Medicine Physician · NPI 1972700714

Dr. Guillermo Antonio Fonseca, MD is a General Practice in Miami, Florida. Qualified in 1980, 46 years ago. Practices with Waterway Med Group LLC, a 3-clinician group and accepts Medicare assignment. Licensed in Florida.

Years since qualifying
46
Licensed in
FL
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

11880 SW 40th St Ste 318
Miami, FL 33175-3584
Phone: (305) 223-3989
Fax: (305) 223-0145
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence ME0064061 (FL)

Record details

NPI number1972700714
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 27, 2007
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyGENERAL PRACTICE
Medical schoolOTHER
Graduated 1980 (46 years in practice)
Group practice Waterway Med Group Llc — 3 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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