Carlos E. Martinez Duran, MD
Internal Medicine Physician · Bayamon, PR
Carlos E. Martinez Duran, MD is an internal medicine physician with a practice address in Bayamon, Puerto Rico, and NPI 1700863420, issued on Dec 22, 2005. Check the license (Puerto Rico 8721, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Carlos E. Martinez Duran
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 8721 PR
Self-reported in NPPES; status is on the state search - Practice location
- 73 Calle Santa Cruz, Bayamon, PR 00961
- Phone
- (787) 786-3592
- Enumerated
- Dec 22, 2005
- Record last updated
- Sep 22, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (787) 786-3506
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,146 in Puerto Rico → Look up another NPI →
Also registered at 73 Calle Santa Cruz
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Carlos E. Martinez Duran 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 8721Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average internal medicine physician in 2024
795 Medicare Part D claims for 187 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Famotidine87 claims
- Atorvastatin Calcium44 claims
- Losartan Potassium34 claims
- Lantus33 claims
- Humalog27 claims
- Metoprolol Succinate27 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.
Carlos E. Martinez Duran among 1,146 internal medicine physician records in Puerto Rico
Carlos E. Martinez Duran, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 52% of these records are
- Record last updated2010 · 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).
117 internal medicine physician records list a practice address in Bayamon
They are 117 of the 2,958 NPPES records with a practice address in Bayamon, and 1,146 internal medicine physician records in Puerto Rico.
All 1,146 in Puerto Rico → Every provider in Bayamon → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Lara Aponte Perez, M.D.Bayamon, PR 009611437154523
- Justino Betancourt, M.D.Bayamon, PR 009611295735363
- Pablo Bisono Rodriguez, M.D.Bayamon, PR 009611366412801
- Mitchell Matundan, M.D.Bayamon, PR 009611063489557
- Zahira Najul, MDBayamon, PR 009611760487631
- Jose Negron Maldonado, M.D.Bayamon, PR 009611689611907
- Ruben Otero, M.D.Bayamon, PR 009611528037306
- Carlos Perez, MDBayamon, PR 009611669447256
Common questions
What is Carlos E. Martinez Duran, MD's NPI number?
Carlos E. Martinez Duran, MD's National Provider Identifier (NPI) is 1700863420, issued on Dec 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Carlos E. Martinez Duran, MD located?
The NPPES record lists a practice address at 73 Calle Santa Cruz, Bayamon, PR, 00961. Phone: (787) 786-3592. Providers update this record themselves, so call before visiting.
How can I verify Carlos E. Martinez Duran, MD's license?
NPPES lists Puerto Rico license number 8721, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Carlos E. Martinez Duran, MD prescribe under Medicare Part D?
In 2024, Carlos E. Martinez Duran, MD had 795 Medicare Part D claims for 187 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.