1. Home
  2. Directory
  3. NPI Profile

DR. ELFREN MARTINEZ M.D
NPI 1245204411
Internal Medicine in Aguas Buenas, PR

Active since February 15, 2006PECOS EnrolledAccepts Medicare Assignment
94 CALLE MUNOZ RIVERA, AGUAS BUENAS, PR 00703(787) 732-0303(787) 732-0303 Get Directions Write a Review

NPPES record last updated: September 7, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Elfren Martinez M.d NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ELFREN MARTINEZ M.D (NPI 1245204411) is an individual internal medicine provider in Aguas Buenas, Puerto Rico, licensed in Puerto Rico (8300) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1983).

NPPES Registry Identity

NPI1245204411
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. ELFREN MARTINEZCredential: M.D
Location Address94 CALLE MUNOZ RIVERAAguas Buenas, PR 00703-3100
Mailing AddressPo Box 9419Caguas, PR 00726-9419 · (787) 732-0303
Phone(787) 732-0303
Fax(787) 732-0303
Sole ProprietorYes
Medical School CMSOtherGraduated 1983
Enumeration DateFebruary 15, 2006
Last NPPES UpdateSeptember 7, 2025
NPPES CertifiedSeptember 7, 2025
✔ NPI 1245204411 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in PR · 8300
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Elfren Martinez M.d is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4183605686
PECOS Enrollment IDI20040529000082
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 00703 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$130.65 typical visit price
range $56.86 – $172.44
Typical copayment $32.66 (range $14.21 – $43.11)
Most-billed visit code 99204
Established Patient
$100.24 typical visit price
range $18.24 – $140.44
Typical copayment $25.06 (range $4.56 – $35.11)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Elfren Martinez's NPI number?

The NPI number for Elfren Martinez is 1245204411. It was assigned to this individual provider in the NPPES registry on February 15, 2006.

Where is Elfren Martinez located?

Elfren Martinez practices at 94 Calle Munoz Rivera, Aguas Buenas, PR 00703. The listed phone number is (787) 732-0303.

What is Elfren Martinez's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Elfren Martinez enrolled in Medicare?

Yes. Elfren Martinez is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Elfren Martinez was last updated on September 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.