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

Individual provider General Practice Physician · NPI 1821401258

Ali Mastali, MD practises Emergency Medicine in San Juan, Puerto Rico. Qualified in 2011, 15 years ago. Practices with Kayenta Alternative Rural Hospital, a 57-clinician group and accepts Medicare assignment. Licensed in Puerto Rico.

Years since qualifying
15
Licensed in
PR
In the registry since
2014
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.

313 C Columbia University Gdn
San Juan, PR 00983 Not confirmed with CMS for 12 years — call before visiting
Phone: (424) 757-3037

No coordinates on file. Search this address in Google Maps

Specialties & licences

General Practice Physician (primary) Taxonomy 208D00000X · Licence 18753 (PR)

Record details

NPI number1821401258
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 3, 2014
Last updated in NPPESJune 3, 2014

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Kayenta Alternative Rural Hospital — 57 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Kayenta Alternative Rural Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 57 clinicians in the practice; 12 are shown here.

Other providers in San Juan