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

Dr. Henry Xavier Nieves Diaz, MD

Individual provider Addiction Medicine (Family Medicine) Physician · NPI 1588168850

Dr. Henry Xavier Nieves Diaz, MD is an Addiction Medicine in Manati, Puerto Rico. Graduated from University Central Del Caribe Escuela De Medicina in 2025, 1 year ago. Practices as a sole proprietor and works from 5 locations. Licensed in Puerto Rico.

Years since qualifying
1
Trained at
University Central Del Caribe Escuela De Medicina
Licensed in
PR
In the registry since
2018
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address may be wrong

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

Manati Medical Center Urb Atenas Calle Hernandez Carrion
Manati, PR 00674
Phone: (787) 621-3700

Additional practice locations (4)

  • Universidad Central Del Caribe, Bayamon, PR 00956 — (787) 798-3001
  • 100 Urb. Mariolga Bo. Turabo, Caguas, PR 00725 — (787) 961-4562
  • Dorado Community Health, Dorado, PR 00646 — (787) 796-3330
  • Vega Alta Community Health, Vega Alta, PR 00692 — (787) 883-6718

Specialties & licences

Addiction Medicine (Family Medicine) Physician (primary) Taxonomy 207QA0401X · Licence 21671 (PR)
General Practice Physician Taxonomy 208D00000X · Licence 21671 (PR)

Record details

NPI number1588168850
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 21, 2018
Last updated in NPPESJune 30, 2025
Certification dateJune 9, 2025

Medicare enrollment

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

Medicare specialtyADDICTION MEDICINE
Medical schoolUNIVERSITY CENTRAL DEL CARIBE ESCUELA DE MEDICINA
Graduated 2025 (1 years in practice)
Accepts Medicare assignment Not indicated
Practice locations3 on file with Medicare

Other providers in Manati