Kathleen Nieves Mas, MD
NPI 1366195216 · Physician Assistant · San Juan, PR
Kathleen Nieves Mas, MD is a Physician Assistant provider in San Juan, PR (NPI 1366195216).
Provider details
- NPI number
- 1366195216
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 1584-P.A. (PR)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Mailing address
Registry dates
- Enumerated
- 2022-02-01
- Last updated
- 2025-03-11
- Certified
- 2025-03-11
Frequently asked questions
- What is Kathleen Nieves Mas's NPI number?
- Kathleen Nieves Mas's National Provider Identifier (NPI) is 1366195216, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathleen Nieves Mas's specialty?
- Kathleen Nieves Mas is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Kathleen Nieves Mas located?
- Kathleen Nieves Mas's practice location on file with NPPES is 1451 Ave Dr Ashford, San Juan, PR 00907.
- What is Kathleen Nieves Mas's phone number?
- The practice phone number listed in the NPPES registry for Kathleen Nieves Mas is (787) 721-2160.
- Is Kathleen Nieves Mas's NPI active?
- Yes — Kathleen Nieves Mas's NPI (1366195216) is active in the NPPES registry as of the last update on 2025-03-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.