Vivian A. Justiniano Santiago, MD
General Practice Physician · Mayaguez, PR
Vivian A. Justiniano Santiago, MD is a general practice physician with a practice address in Mayaguez, Puerto Rico, and NPI 1689152035, issued on Jul 29, 2018. Check the license (Puerto Rico 21039, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Vivian A. Justiniano Santiago
- Credential
- MD
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- 21039 PR
Self-reported in NPPES; status is on the state search - Practice location
- Carr 2 KM 149.5 Sec Playa Grande BO Sabanetas Ste 207, Mayaguez, PR 00680
- Phone
- (787) 978-3131
- Enumerated
- Jul 29, 2018
- Record last updated
- Jul 10, 2026
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 4,170 in Puerto Rico → Look up another NPI →
Verify Vivian A. Justiniano Santiago in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Puerto Rico board licenses this profession
Search for license 21039Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average general practice physician in 2024
825 Medicare Part D claims for 80 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Atorvastatin Calcium47 claims
- Losartan Potassium45 claims
- Gabapentin42 claims
- Metformin Hcl42 claims
- Amlodipine Besylate36 claims
- Levothyroxine Sodium30 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Vivian A. Justiniano Santiago among 4,170 general practice physician records in Puerto Rico
Vivian A. Justiniano Santiago, MD is one of 4,170 general practice physician records with a practice address in Puerto Rico. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 66% of them.
- NPI issued2018 · 66% of these records are older, 31% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 29% of these records are
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
154 general practice physician records list a practice address in Mayaguez
They are 154 of the 1,408 NPPES records with a practice address in Mayaguez, and 4,170 general practice physician records in Puerto Rico.
All 4,170 in Puerto Rico → Every provider in Mayaguez → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Rafael Alvarez, MDMayaguez, PR 006801114994993
- Marcos Ayala Rivera, M.D.Mayaguez, PR 006801194772640
- Jose Ballester Echegaray, MDMayaguez, PR 006801114994282
- Carmen Berrios, MDMayaguez, PR 006801578551784
- Shahid Chaudhary, M.D.Mayaguez, PR 006801932187499
- Pedro Gonzalez, MDMayaguez, PR 006801225026297
- Ivette Gonzalez, MDMayaguez, PR 006801215927298
- Yoilis Guerrero, MDMayaguez, PR 006801548204407
Common questions
What is Vivian A. Justiniano Santiago, MD's NPI number?
Vivian A. Justiniano Santiago, MD's National Provider Identifier (NPI) is 1689152035, issued on Jul 29, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Vivian A. Justiniano Santiago, MD located?
The NPPES record lists a practice address at Carr 2 KM 149.5 Sec Playa Grande BO Sabanetas Ste 207, Mayaguez, PR, 00680. Phone: (787) 978-3131. Providers update this record themselves, so call before visiting.
How can I verify Vivian A. Justiniano Santiago, MD's license?
NPPES lists Puerto Rico license number 21039, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Vivian A. Justiniano Santiago, MD prescribe under Medicare Part D?
In 2024, Vivian A. Justiniano Santiago, MD had 825 Medicare Part D claims for 80 beneficiaries; the average among general practice physician prescribers was 3,030. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.