Marimar Hernandez Hernandez
Internal Medicine Physician · San Juan, PR
Marimar Hernandez Hernandez is an internal medicine physician with a practice address in San Juan, Puerto Rico, and NPI 1518421189, issued on Jan 28, 2019. Check the license (Puerto Rico 23651, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marimar Hernandez Hernandez
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 23651 PR
Self-reported in NPPES; status is on the state search - Practice location
- Hospital Municipal San Juan, San Juan, PR 00936
- Phone
- (787) 480-2700
- Enumerated
- Jan 28, 2019
- Record last updated
- Jan 14, 2026
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,146 in Puerto Rico → Look up another NPI →
Verify Marimar Hernandez Hernandez 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 23651Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
98 Medicare Part D claims for 23 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium16 claims
- Synthroid15 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.
Industry payments in 2024: $665.30
23 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Marimar Hernandez Hernandez among 1,146 internal medicine physician records in Puerto Rico
Marimar Hernandez Hernandez 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 2019, is newer than 78% of them.
- NPI issued2019 · 78% of these records are older, 17% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 52% of these records are
- Record last updated2026 · 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
- James Abrams, MDSan Juan, PR 009361861721789
- Gustavo Altamar, M.D.Rio Piedras, PR 009361992908461
- Juan Aviles, M.D.Rio Piedras, PR 009361922412972
- Arleen Bigio, M.D.San Juan, PR 009361336108133
- Jaymilitte Bosques-Lorenzo, MDSan Juan, PR 009361922663921
- Nicolas Cabrera, M.D.San Juan, PR 009361932528031
- Vicente Covas, MDSan Juan, PR 009361710444716
- Jeremy Feliciano, M.DSan Juan, PR 009361861982167
Common questions
What is Marimar Hernandez Hernandez's NPI number?
Marimar Hernandez Hernandez's National Provider Identifier (NPI) is 1518421189, issued on Jan 28, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Marimar Hernandez Hernandez located?
The NPPES record lists a practice address at Hospital Municipal San Juan, San Juan, PR, 00936. Phone: (787) 480-2700. Providers update this record themselves, so call before visiting.
How can I verify Marimar Hernandez Hernandez's license?
NPPES lists Puerto Rico license number 23651, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Marimar Hernandez Hernandez prescribe under Medicare Part D?
In 2024, Marimar Hernandez Hernandez had 98 Medicare Part D claims for 23 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.