Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mr. William Marquez-Mulero, MD

Individual provider Family Medicine Physician · NPI 1477539815

Mr. William Marquez-Mulero, MD is a Family Practice in Humacao, Puerto Rico. Graduated from University of Puerto Rico School of Medicine in 1977, 49 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Puerto Rico.

Years since qualifying
49
Trained at
University of Puerto Rico School of Medicine
Licensed in
PR
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address may be wrong

The ZIP code does not match the city and state on this record. Call before visiting.

Calle Carreras #13
Humacao, PR 00791
Phone: (787) 390-7973

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Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 5784 (PR)

Record details

NPI number1477539815
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedDecember 19, 2005
Last updated in NPPESMarch 7, 2023

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF PUERTO RICO SCHOOL OF MEDICINE
Graduated 1977 (49 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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