Elfren Martinez, M.D
NPI 1245204411 · Internal Medicine Physician · Aguas Buenas, PR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Elfren Martinez, M.D is a Internal Medicine Physician provider in Aguas Buenas, PR (NPI 1245204411).
Provider details
- NPI number
- 1245204411
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- Yes
- License
- 8300 (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
20 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 · 79 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metformin Hcl | 177 | 51 |
| Levothyroxine Sodiumbrand: Synthroid | 170 | 48 |
| Rosuvastatin Calcium | 169 | 64 |
| Atorvastatin Calcium | 163 | 54 |
| Simvastatin | 147 | 47 |
| Omeprazole | 144 | 37 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-15
- Last updated
- 2025-09-07
- Certified
- 2025-09-07
Frequently asked questions
- What is Elfren Martinez's NPI number?
- Elfren Martinez's National Provider Identifier (NPI) is 1245204411, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elfren Martinez's specialty?
- Elfren Martinez is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Elfren Martinez located?
- Elfren Martinez's practice location on file with NPPES is 94 Calle Munoz Rivera, Aguas Buenas, PR 00703-3100.
- What is Elfren Martinez's phone number?
- The practice phone number listed in the NPPES registry for Elfren Martinez is (787) 732-0303.
- Does Elfren Martinez accept Medicare?
- Elfren Martinez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Elfren Martinez's NPI active?
- Yes — Elfren Martinez's NPI (1245204411) is active in the NPPES registry as of the last update on 2025-09-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.