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ALI MASTALI M.D.
NPI 1821401258
General Practice in San Juan, PR

Active since June 03, 2014PECOS EnrolledAccepts Medicare Assignment
69.67/100
CMS Quality Rating
313 C COLUMBIA, UNIVERSITY GARDEN, SAN JUAN, PR 00983(424) 757-3037 Get Directions Write a Review

NPPES record last updated: June 3, 2014. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Ali Mastali M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALI MASTALI M.D. (NPI 1821401258) is an individual general practice provider in San Juan, Puerto Rico, licensed in Puerto Rico (18753) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS and is a graduate of Other (2011).

NPPES Registry Identity

NPI1821401258
Entity TypeIndividualMale
Primary Taxonomy208D00000X
Provider Legal NameALI MASTALICredential: M.D.
Location Address313 C COLUMBIA, UNIVERSITY GARDENSan Juan, PR 00983
Mailing Address313 C Columbia, University GardenSan Juan, PR 00983 · (424) 757-3037
Phone(424) 757-3037
Sole ProprietorYes
Medical School CMSOtherGraduated 2011
Enumeration DateJune 3, 2014
✔ NPI 1821401258 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyGeneral PracticeAllopathic & Osteopathic Physicians
Taxonomy Code208D00000X
License✔ Licensed in PR · 18753
Definition
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee
313 C COLUMBIA, San Juan, PR 00983
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ali Mastali M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2567688179
PECOS Enrollment IDI20141119001894
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

4

Medicare enrollment records show Ali Mastali reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Frank C Alario MD Pl
1,050 mi
Family Medicine
9950 STIRLING RD STE 108
Hollywood, FL 33024
  • Reassigned Medicare billing, Florida enrollment
  • 13 clinicians in this Medicare group
NPI 1285932947 (954) 357-0889
Kayenta Alternative Rural Hospital
2,939 mi
General Acute Care Hospital
US HIGHWAY 160 BLDING 2000
Dennehotso, AZ 86535
  • Reassigned Medicare billing, Texas enrollment
  • 215 clinicians in this Medicare group
NPI 1821167297 (928) 697-4000
San Xavier District Office
2,943 mi
Public Health or Welfare
2018 W SAN XAVIER RD
Tucson, AZ 85746
  • Reassigned Medicare billing, Texas enrollment
  • Medicare enrollment name: Ton Sells Hospital
  • 349 clinicians in this Medicare group
NPI 1073694832 (520) 295-2503
Us Health Dept Of Health & Human Services
2,944 mi
Rural Health
107 H STREET EAST
Poplar, MT 59255
  • Reassigned Medicare billing, Texas enrollment
  • Medicare enrollment name: U S Health Dept Of Health & Human Services
  • 306 clinicians in this Medicare group
NPI 1972694602 (406) 768-3491

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

69.67/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality72.79
Promoting Interoperability74
Improvement Activities40
Cost18.54

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ali Mastali's NPI number?

The NPI number for Ali Mastali is 1821401258. It was assigned to this individual provider in the NPPES registry on June 3, 2014.

Where is Ali Mastali located?

Ali Mastali practices at 313 C Columbia University Garden, San Juan, PR 00983. The listed phone number is (424) 757-3037.

What is Ali Mastali's specialty?

The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.

Is Ali Mastali enrolled in Medicare?

Yes. Ali Mastali is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Ali Mastali's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ali Mastali reassigns Medicare benefits to 4 organizations: Frank C Alario MD Pl (Hollywood, FL), Kayenta Alternative Rural Hospital (Dennehotso, AZ), San Xavier District Office (Tucson, AZ) and Us Health Dept Of Health & Human Services (Poplar, MT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ali Mastali's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Ali Mastali was last updated on June 3, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.