Vivian Justiniano Santiago, MD
NPI 1689152035 · General Practice Physician · Mayaguez, PR
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Vivian Justiniano Santiago, MD is a General Practice Physician provider in Mayaguez, PR (NPI 1689152035).
Provider details
- NPI number
- 1689152035
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 21039 (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 47 | 16 |
| Losartan Potassium | 45 | 13 |
| Gabapentin | 42 | 11 |
| Metformin Hcl | 42 | 15 |
| Amlodipine Besylate | 36 | 12 |
| Levothyroxine Sodium | 30 | — |
| Lisinopril |
Mailing address
Registry dates
- Enumerated
- 2018-07-29
- Last updated
- 2018-09-10
Frequently asked questions
- What is Vivian Justiniano Santiago's NPI number?
- Vivian Justiniano Santiago's National Provider Identifier (NPI) is 1689152035, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Vivian Justiniano Santiago's specialty?
- Vivian Justiniano Santiago is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Vivian Justiniano Santiago located?
- Vivian Justiniano Santiago's practice location on file with NPPES is Tenerife 68 Sultana, Mayaguez, PR 00680.
- What is Vivian Justiniano Santiago's phone number?
- The practice phone number listed in the NPPES registry for Vivian Justiniano Santiago is (787) 910-9308.
- Does Vivian Justiniano Santiago accept Medicare?
- Vivian Justiniano Santiago is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Vivian Justiniano Santiago's NPI active?
- Yes — Vivian Justiniano Santiago's NPI (1689152035) is active in the NPPES registry as of the last update on 2018-09-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.