Efrain Marrero Alvira, MD
NPI 1447866884 · General Practice Physician · Luquillo, PR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Efrain Marrero Alvira, MD is a General Practice Physician provider in Luquillo, PR (NPI 1447866884).
Provider details
- NPI number
- 1447866884
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 21994 (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Dexamethasone | 31 | 30 |
| Naproxen | 28 | 28 |
| Amoxicillin | 26 | 26 |
| Ketorolac Tromethamine | 23 | 22 |
| Metronidazole | 19 | 18 |
| Pantoprazole Sodium | 19 | 18 |
| Cyclobenzaprine Hcl | 18 | 18 |
| Azithromycin | 15 | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-09-21
- Last updated
- 2020-11-09
- Certified
- 2020-10-21
Frequently asked questions
- What is Efrain Marrero Alvira's NPI number?
- Efrain Marrero Alvira's National Provider Identifier (NPI) is 1447866884, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Efrain Marrero Alvira's specialty?
- Efrain Marrero Alvira is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Efrain Marrero Alvira located?
- Efrain Marrero Alvira's practice location on file with NPPES is Urb Colinas De Luquillo, Calle 4 - Casa 74, Luquillo, PR 00773.
- What is Efrain Marrero Alvira's phone number?
- The practice phone number listed in the NPPES registry for Efrain Marrero Alvira is (787) 955-9181.
- Does Efrain Marrero Alvira accept Medicare?
- Efrain Marrero Alvira is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Efrain Marrero Alvira's NPI active?
- Yes — Efrain Marrero Alvira's NPI (1447866884) is active in the NPPES registry as of the last update on 2020-11-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.