Carmen Marrero, MD
NPI 1992787048 · Geriatric Medicine (Family Medicine) Physician · San Juan, PR
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carmen Marrero, MD is a Geriatric Medicine (Family Medicine) Physician provider in San Juan, PR (NPI 1992787048).
Provider details
- NPI number
- 1992787048
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Family Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 9548 (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
175 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 143 | $89 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 32 | $14 |
Typical Medicare-allowed amounts for these services range $14–$89 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 174 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 604 | 136 |
| Gabapentin | 546 | 117 |
| Rosuvastatin Calcium | 529 | 171 |
| Alendronate Sodium | 518 | 165 |
| Atorvastatin Calcium | 463 | 127 |
| Simvastatin | 418 | 101 |
| Ezetimibe | 392 | 133 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-15
- Last updated
- 2014-03-07
Frequently asked questions
- What is Carmen Marrero's NPI number?
- Carmen Marrero's National Provider Identifier (NPI) is 1992787048, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carmen Marrero's specialty?
- Carmen Marrero is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Family Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Carmen Marrero located?
- Carmen Marrero's practice location on file with NPPES is 488 Carr 845, San Juan, PR 00926-4403.
- What is Carmen Marrero's phone number?
- The practice phone number listed in the NPPES registry for Carmen Marrero is (787) 761-1945.
- Does Carmen Marrero accept Medicare?
- Carmen Marrero is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carmen Marrero's NPI active?
- Yes — Carmen Marrero's NPI (1992787048) is active in the NPPES registry as of the last update on 2014-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.