Dr Elfren Martinez, MD is a medicare enrolled "Internal Medicine" physician in Aguas Buenas, Puerto Rico. He graduated from medical school in 1983 and has 42 years of diverse experience with area of expertise as Internal Medicine. His current practice location is
94 Calle Munoz Rivera, Aguas Buenas, Puerto Rico. You can reach out to his office (for appointments etc.) via phone at
(787) 732-0303.
Dr Elfren Martinez is licensed to practice in Puerto Rico (license number 8300) and he also participates in the medicare program. He
accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1245204411.
Physician's Profile
| Full Name | Dr Elfren Martinez |
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| Gender | Male |
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| Speciality | Internal Medicine |
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| Experience | 42 Years |
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| Location | 94 Calle Munoz Rivera, Aguas Buenas, Puerto Rico |
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| Accepts Medicare Assignments | Yes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance. |
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Medical Education and Training:
- Dr Elfren Martinez graduated from medical school in 1983
NPI Data:
- NPI Number: 1245204411
- Provider Enumeration Date: 02/15/2006
- Last Update Date: 09/07/2025
Medicare PECOS Information:
- PECOS PAC ID: 4183605686
- Enrollment ID: I20040529000082
Medical Identifiers
Medical identifiers for Dr Elfren Martinez such as npi, medicare ID, medicare PIN, medicaid, etc.
| Identifier | Type | State | Issuer |
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| 1245204411 | NPI | - | NPPES |
Medical Taxonomies and Licenses
| Taxonomy | Type | License (State) | Status |
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| 207R00000X | Internal Medicine | 8300 (Puerto Rico) | Primary |
Medicare Reassignments
Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Elfren Martinez allows following entities to bill medicare on his behalf.
| Entity Name | Martinez Lorenzo Internal Medicine Services Psc |
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| Entity Type | Part B Supplier - Clinic/group Practice |
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| Entity Identifiers | NPI Number: 1215961388
PECOS PAC ID: 7416028113
Enrollment ID: O20080624000712 |
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Medicare Part D Prescriber Enrollment
Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Elfren Martinez is
enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.
Mailing Address and Practice Location
| Mailing Address | Practice Location Address |
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Dr Elfren Martinez, MD
Po Box 9419,
Caguas, PR 00726-9419
Ph: (787) 732-0303 | Dr Elfren Martinez, MD
94 Calle Munoz Rivera,
Aguas Buenas, PR 00703-3100
Ph: (787) 732-0303 |
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