NPPES file of Aug 9, 2026

Maricarmen Milan Esteva, M.D.

Internal Medicine Physician · Caguas, PR

Maricarmen Milan Esteva, M.D. is an internal medicine physician with a practice address in Caguas, Puerto Rico, and NPI 1922389501, issued on Sep 8, 2011. Check the license (Puerto Rico 18323, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1922389501
Name
Maricarmen Milan Esteva
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
18323 PR
Self-reported in NPPES; status is on the state search
Practice location
Hospital Menonita Caguas, Caguas, PR 00725
Phone
(787) 653-0550
Enumerated
Sep 8, 2011
Record last updated
Jul 13, 2023
Medicare enrollment
Enrolled (PECOS I20121102000465); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at Hospital Menonita Caguas

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Dania Leiva Solis, MDFamily Medicine Physician1427431741
  2. Daniel Reyes De JesusNeurology Physician1972960029
  3. Daniel Rodriguez Martinez, MDSurgery Physician1093261257

Verify Maricarmen Milan Esteva in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Puerto Rico board licenses this profession
    Search for license 18323
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Puerto Rico license search

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87% fewer Medicare Part D claims than the average internal medicine physician in 2024

419 Medicare Part D claims for 169 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.

  1. Maricarmen Milan Esteva419
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium50 claims
  2. Losartan Potassium26 claims
  3. Amlodipine Besylate22 claims
  4. Famotidine21 claims
  5. Metoprolol Succinate20 claims
  6. Pantoprazole Sodium18 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.

One hospital affiliation

  1. Hospital Menonita Caguas IncCaguas, PR · Acute Care Hospitals

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).

Maricarmen Milan Esteva among 1,146 internal medicine physician records in Puerto Rico

Maricarmen Milan Esteva, M.D. 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 2011, is newer than 64% of them.

  • NPI issued2011 · 64% of these records are older, 35% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 52% of these records are
  • Graduated2009 · median 1996 among the 595 with a school on file
  • Record last updated2023 · 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).

58 internal medicine physician records list a practice address in Caguas

They are 58 of the 2,093 NPPES records with a practice address in Caguas, and 1,146 internal medicine physician records in Puerto Rico.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Andres Barcelo-Miller, M.DCaguas, PR 007251144244385
  2. David Carballeira, MDCaguas, PR 007251174524748
  3. Carmen Cortes, MDCaguas, PR 007251275538779
  4. Eduardo Diaz Del Valle, MDCaguas, PR 007251457339541
  5. Marco Feliciano, M.DCaguas, PR 007251033107172
  6. Anstrong Figueroa, M.D.Caguas, PR 007251750336921
  7. Wallace Laracuenta, M.DCaguas, PR 007251598788200
  8. Hector Martinez Torres, MDCaguas, PR 007251821032087

Common questions

What is Maricarmen Milan Esteva, M.D.'s NPI number?

Maricarmen Milan Esteva, M.D.'s National Provider Identifier (NPI) is 1922389501, issued on Sep 8, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Maricarmen Milan Esteva, M.D. located?

The NPPES record lists a practice address at Hospital Menonita Caguas, Caguas, PR, 00725. Phone: (787) 653-0550. Providers update this record themselves, so call before visiting.

How can I verify Maricarmen Milan Esteva, M.D.'s license?

NPPES lists Puerto Rico license number 18323, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.

How much does Maricarmen Milan Esteva, M.D. prescribe under Medicare Part D?

In 2024, Maricarmen Milan Esteva, M.D. had 419 Medicare Part D claims for 169 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.