Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Carmen Milagros Marrero, MD

Geriatric Medicine (Family Medicine) Physician in San Juan, PR · enumerated 2005.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1992787048

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Registry record

Entity type Individual (Type 1)

Name Ms. Carmen Milagros Marrero

Credential MD

Sex Female

Practice address San Juan, PR, 00926

Phone (787) 761-1945

Fax (787) 761-1947

Enumeration date Nov 15, 2005

Last updated in NPPES Mar 7, 2014

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 9548 (PR) Secondary

207QG0300X Geriatric Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License 9548 (PR) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
069435	Other	PR	CRUZ AZUL
660563176	Other	PR	UNITED HEALTH CARE
660563176	Other	PR	PALIC
81953	Other	PR	TRIPLE S (SSS)
660563176	Other	PR	COSVI
660563176	Other	PR	SALUD DORADO CON MEDICARE
81953	Other	PR	MEDICARE OPTIMO
20085	Other	PR	PREFERRED HEALTH (UTI)
660563176	Other	PR	MAPFRE L.
660563176	Other	PR	OPTION HEALTH CARE
660563176	Other	PR	MEDICAL CARD SYSTEM (MCS)
660563176	Other	PR	MCS CLASSICARE
660563176	Other	PR	FIRST PLUS
9280057	Other	PR	HUMANA HEALTH PLANS
500168E	Other	PR	MEDICARE Y MUCHO MAS (MMM
660563176	Other	PR	AUXILIO PLATINO
9280057	Other	PR	HUMANA INSURANCE OF PR
2758	Other	PR	PREFERRED MEDICARE CHOICE
4214	Other	PR	INTERNATIONAL MEDICAL CAR

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for Carmen Marrero?

The National Provider Identifier (NPI) for Carmen Marrero is 1992787048, a Type 1 (individual) record in the CMS NPPES registry.

Where does Carmen Marrero practice?

The practice location on file with NPPES is in San Juan, PR. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Grupo De Servicios Geriatrico Geriatric Medicine (Family Medicine) Physician · San Juan, PR NPI 1366432783 Dra Carmen M Marrero Psc Geriatric Medicine (Family Medicine) Physician · San Juan, PR NPI 1386625705

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-03-07.