Carmen Milagros Marrero, MD
Geriatric Medicine (Family Medicine) Physician · San Juan, PR
Carmen Milagros Marrero, MD is a geriatric medicine (family medicine) physician with a practice address in San Juan, Puerto Rico, and NPI 1992787048, issued on Nov 15, 2005. Check the license (Puerto Rico 9548, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Carmen Milagros Marrero
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Family Medicine) Physician 207QG0300X
- License number
- 9548 PR
Self-reported in NPPES; status is on the state search - Practice location
- 488 Carr 845, San Juan, PR 00926
- Phone
- (787) 761-1945
- Enumerated
- Nov 15, 2005
- Record last updated
- Mar 7, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (787) 761-1947
- Medicare enrollment
- Enrolled (PECOS I20040909000871); accepts Medicare assignment
- Medical or professional school
- University Of Puerto Rico School Of Medicine, 1987
- Entity
- Type 1 · individual
8 nearest geriatric medicine (family medicine) physician records → All 64 in Puerto Rico → Look up another NPI →
Verify Carmen Milagros Marrero 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 9548Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.9 times the Medicare Part D claims of the average geriatric medicine (family medicine) physician in 2024
15,133 Medicare Part D claims for 541 beneficiaries, against an average of 5,222 among the 1,271 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 83 claims were for opioids.
Most prescribed
- Levothyroxine Sodium604 claims
- Gabapentin546 claims
- Rosuvastatin Calcium529 claims
- Alendronate Sodium518 claims
- Atorvastatin Calcium463 claims
- Simvastatin418 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.
Carmen Milagros Marrero among 64 geriatric medicine (family medicine) physician records in Puerto Rico
Carmen Milagros Marrero, MD is one of 64 geriatric medicine (family medicine) physician records with a practice address in Puerto Rico. 83% 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, 84% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated1987 · median 1998 among the 29 with a school on file
- Record last updated2014 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QG0300X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Family Medicine) Physician providers in Puerto Rico
There are 64 geriatric medicine (family medicine) physician records in Puerto Rico.
All 64 in Puerto Rico → Every provider in San Juan → Geriatric Medicine (Family Medicine) Physician nationwide →
The 8 geriatric medicine (family medicine) physician records with the nearest ZIP codes
- Joaquin Fernandez, MDSan Juan, PR 009261376665190
- Maritza Trinidad Reyes, MDRio Piedras, PR 009261265456040
- Maria Alonso, M.D.San Juan, PR 009211912921172
- Carlos Cestero, M.DSan Juan, PR 009211619299583
- Vilma Cora, MDRio Piedras, PR 009211104868439
- Gema Hernandez, M.D.San Juan, PR 009211780014910
- Carmen Izquierdo, M.D.San Juan, PR 009211134536980
- Carmen Lozada, MDSan Juan, PR 009211104879550
Common questions
What is Carmen Milagros Marrero, MD's NPI number?
Carmen Milagros Marrero, MD's National Provider Identifier (NPI) is 1992787048, issued on Nov 15, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Carmen Milagros Marrero, MD located?
The NPPES record lists a practice address at 488 Carr 845, San Juan, PR, 00926. Phone: (787) 761-1945. Providers update this record themselves, so call before visiting.
How can I verify Carmen Milagros Marrero, MD's license?
NPPES lists Puerto Rico license number 9548, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Carmen Milagros Marrero, MD prescribe under Medicare Part D?
In 2024, Carmen Milagros Marrero, MD had 15,133 Medicare Part D claims for 541 beneficiaries; the average among geriatric medicine (family medicine) physician prescribers was 5,222. 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.