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

Dr. Gretchen Martinez Alayon, MD

Individual provider Internal Medicine Physician · NPI 1942465661

Dr. Gretchen Martinez Alayon, MD is an Internal Medicine in Hatillo, Puerto Rico. Qualified in 2002, 24 years ago. Practices with Mid Florida Hospital Specialists PA, a 53-clinician group and accepts Medicare assignment. Licensed in Puerto Rico.

Years since qualifying
24
Licensed in
PR
In the registry since
2008
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.

Hc 6 Box 14310
Hatillo, PR 00659-6602
Phone: (787) 484-8454

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 18435 (PR)

Record details

NPI number1942465661
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 22, 2008
Last updated in NPPESApril 23, 2012

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2002 (24 years in practice)
Group practice Mid Florida Hospital Specialists Pa — 53 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Hatillo