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

Dr. Elfren Martinez, MD

Individual provider Internal Medicine Physician · NPI 1245204411

Dr. Elfren Martinez, MD is an Internal Medicine in Aguas Buenas, Puerto Rico. Qualified in 1983, 43 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Puerto Rico.

Years since qualifying
43
Licensed in
PR
In the registry since
2006
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.

94 Calle Munoz Rivera
Aguas Buenas, PR 00703-3100
Phone: (787) 732-0303
Fax: (787) 732-0303

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 8300 (PR)

Record details

NPI number1245204411
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 15, 2006
Last updated in NPPESSeptember 7, 2025
Certification dateSeptember 7, 2025
Mailing addressPo Box 9419, Caguas, PR 00726-9419

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1983 (43 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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