Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Frank Esteban Morales Barreto, MD

Individual provider Internal Medicine Physician · NPI 1902912082

Dr. Frank Esteban Morales Barreto, MD practises Internal Medicine in San Juan, Puerto Rico. Qualified in 1993, 33 years ago. Practices with Asociacion De Maestros De P R, a 9-clinician group and accepts Medicare assignment. Licensed in Puerto Rico.

Years since qualifying
33
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.

554 Calle Juan J Jimenez
San Juan, PR 00918-3722
Phone: (787) 274-1472
Fax: (787) 759-8901

No coordinates on file. Search this address in Google Maps

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 12700 (PR)

Record details

NPI number1902912082
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 22, 2006
Last updated in NPPESFebruary 4, 2020
Certification dateFebruary 4, 2020

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1993 (33 years in practice)
Group practice Asociacion De Maestros De P R — 9 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients31
Services billed 95 a service is one billed item, such as a visit, a test or a procedure
Average patient age81

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Asociacion De Maestros De P R

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in San Juan