NPPES file of Aug 9, 2026

Mercedes F. Carrion-Castro, M.D.

Obstetrics & Gynecology Physician · Santurce, PR

Mercedes F. Carrion-Castro, M.D. is an obstetrics & gynecology physician with a practice address in Santurce, Puerto Rico, and NPI 1952309197, issued on Jul 12, 2005. Check the license (Puerto Rico 6597, 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
1952309197
Name
Mercedes F. Carrion-Castro
Credential
M.D.
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
6597 PR
Self-reported in NPPES; status is on the state search
Practice location
Box 12109, Santurce, PR 00914
Phone
(787) 642-6386
Enumerated
Jul 12, 2005
Record last updated
Jul 13, 2026
Fax
(787) 790-3851
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest obstetrics & gynecology physician records → All 360 in Puerto Rico → Look up another NPI →

Verify Mercedes F. Carrion-Castro 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 6597    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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38% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024

102 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.

  1. Mercedes Carrion-Castro102
  2. Specialty average165

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.

Mercedes F. Carrion-Castro among 360 obstetrics & gynecology physician records in Puerto Rico

Mercedes F. Carrion-Castro, M.D. is one of 360 obstetrics & gynecology physician records with a practice address in Puerto Rico. 86% 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, 86% newer
  • In a Medicare fileYes · 86% of these records are
  • In the CMS Doctors and Clinicians fileNo · 50% of these records are
  • Record last updated2026 · 70% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

7 obstetrics & gynecology physician records list a practice address in Santurce

They are 7 of the 201 NPPES records with a practice address in Santurce, and 360 obstetrics & gynecology physician records in Puerto Rico.

All 360 in Puerto Rico → Every provider in Santurce → Obstetrics & Gynecology Physician nationwide →

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Anicia PimentelSan Juan, PR 009141639245251
  2. Alexis Rodriguez, MDSan Juan, PR 009151598316879
  3. Carlos Davila, MDCaguas, PR 009121831171594
  4. Mariola Llinas Messeguer, M.D.Santurce, PR 009121609282300
  5. Manuel Velilla Iglesias, M.D.San Juan, PR 009121861461261
  6. Luis Cruz, MDSan Juan, PR 009171548321433
  7. Sonia Diaz Perez, M.DSan Juan, PR 009171568463180
  8. Daphne Diaz Vazquez, M.D.San Juan, PR 009171760863526

Common questions

What is Mercedes F. Carrion-Castro, M.D.'s NPI number?

Mercedes F. Carrion-Castro, M.D.'s National Provider Identifier (NPI) is 1952309197, issued on Jul 12, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Mercedes F. Carrion-Castro, M.D. located?

The NPPES record lists a practice address at Box 12109, Santurce, PR, 00914. Phone: (787) 642-6386. Providers update this record themselves, so call before visiting.

How can I verify Mercedes F. Carrion-Castro, M.D.'s license?

NPPES lists Puerto Rico license number 6597, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.

How much does Mercedes F. Carrion-Castro, M.D. prescribe under Medicare Part D?

In 2024, Mercedes F. Carrion-Castro, M.D. had 102 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.