Merliz Negron Pantoja, MD
Internal Medicine Physician · San Juan, PR
Merliz Negron Pantoja, MD is an internal medicine physician with a practice address in San Juan, Puerto Rico, and NPI 1790160190, issued on Jul 27, 2015. Check the license (Puerto Rico 21289, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Merliz Negron Pantoja
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 21289 PR
Self-reported in NPPES; status is on the state search - Practice location
- 516 Calle Juan J Jimenez, San Juan, PR 00918
- Phone
- (787) 940-4094
- Enumerated
- Jul 27, 2015
- Record last updated
- Dec 19, 2025
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,146 in Puerto Rico → Look up another NPI →
Also registered at 516 Calle Juan J Jimenez
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jose Cardona, MDGeneral Practice Physician1427433820
Verify Merliz Negron Pantoja 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 21289Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average internal medicine physician in 2024
117 Medicare Part D claims for 11 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Irbesartan12 claims
- Carvedilol11 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.
Merliz Negron Pantoja among 1,146 internal medicine physician records in Puerto Rico
Merliz Negron Pantoja, MD is one of 1,146 internal medicine physician records with a practice address in Puerto Rico. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 69% of them.
- NPI issued2015 · 69% of these records are older, 29% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 52% of these records are
- Record last updated2025 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
322 internal medicine physician records list a practice address in San Juan
They are 322 of the 8,960 NPPES records with a practice address in San Juan, and 1,146 internal medicine physician records in Puerto Rico.
All 1,146 in Puerto Rico → Every provider in San Juan → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Dweepkumar Bangdiwala, M.D.San Juan, PR 009181770588428
- Susana Cantalapiedra, M.D.San Juan, PR 009181952300410
- Pablo Cruz Burgos, MDSan Juan, PR 009181922004134
- Luis Diaz-Maisonet, MDHato Rey, PR 009181447214192
- Carlos Gonzalez PonsSan Juan, PR 009181548218688
- Martin H Lugo Fagundo, MDSan Juan, PR 009181316944549
- Pedro Maldonado, M.D.San Juan, PR 009181033102652
- Jose Martinez Fernandez, MDSan Juan, PR 009181477542322
Common questions
What is Merliz Negron Pantoja, MD's NPI number?
Merliz Negron Pantoja, MD's National Provider Identifier (NPI) is 1790160190, issued on Jul 27, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Merliz Negron Pantoja, MD located?
The NPPES record lists a practice address at 516 Calle Juan J Jimenez, San Juan, PR, 00918. Phone: (787) 940-4094. Providers update this record themselves, so call before visiting.
How can I verify Merliz Negron Pantoja, MD's license?
NPPES lists Puerto Rico license number 21289, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Merliz Negron Pantoja, MD prescribe under Medicare Part D?
In 2024, Merliz Negron Pantoja, MD had 117 Medicare Part D claims for 11 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.