Efren Rivera Santiago, MD - Medicare General Practice in Fajardo, PR

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Efren Rivera Santiago, MD is a medicare enrolled "General Practice" physician in Fajardo, Puerto Rico. His current practice location is F4 Ave Principal, Urb Baralt, Fajardo, Puerto Rico. You can reach out to his office (for appointments etc.) via phone at (787) 860-5002.

Efren Rivera Santiago is licensed to practice in Puerto Rico (license number 17155) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1619138344.

Contact Information

Efren Rivera Santiago, MD
F4 Ave Principal, Urb Baralt,
Fajardo, PR 00738
(787) 860-5002
(787) 655-9021

Map and Direction




Physician's Profile

Full NameEfren Rivera Santiago
GenderMale
SpecialityGeneral Practice
LocationF4 Ave Principal, Fajardo, Puerto Rico
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1619138344
  • Provider Enumeration Date: 06/25/2008
  • Last Update Date: 04/03/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 9537392758
  • Enrollment ID: I20140423001879

Medical Identifiers

Medical identifiers for Efren Rivera Santiago such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1619138344NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208D00000XGeneral Practice 17155 (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. Efren Rivera Santiago allows following entities to bill medicare on his behalf.
Entity NameCosta Este Medical Services Corp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1548430689
PECOS PAC ID: 1850470675
Enrollment ID: O20080506000173
Entity NameCosta Este Medical Services Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1174007470
PECOS PAC ID: 2961735345
Enrollment ID: O20190618001404

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. Efren Rivera Santiago 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 AddressPractice Location Address
Efren Rivera Santiago, MD
F4 Ave Principal, Urb Baralt,
Fajardo, PR 00738

Ph: (787) 860-5002		Efren Rivera Santiago, MD
F4 Ave Principal, Urb Baralt,
Fajardo, PR 00738

Ph: (787) 860-5002

Reviews and Comments


General Practice Doctors in Fajardo, PR

Hildeberto Blasco, MD
General Practice
Medicare: Medicare Enrolled
Practice Location: Ave Principal Baralt # F4, Fajardo, PR 00738
Phone: 787-860-5002    
Dr. Juan Luis Vazquez, MD
General Practice
Medicare: Medicare Enrolled
Practice Location: 404 Ave General Valero, Fajardo, PR 00738
Phone: 787-988-9431    
Arturo Ortiz Ramos,
General Practice
Medicare: Accepting Medicare Assignments
Practice Location: Calle Union #63, Fajardo, PR 00738
Phone: 787-863-4363    
Arturo Hernandez Estrlla, MD
General Practice
Medicare: Not Enrolled in Medicare
Practice Location: Centro Pediatrico De Fajardo, Urb Montr Brisa Calle E Suite 77, Fajardo, PR 00738
Phone: 787-801-1992    Fax: 787-863-5437
Dr. Benjamin Ricardo Velazquez, MD
General Practice
Medicare: Accepting Medicare Assignments
Practice Location: Ave Principal G 19 Urb Baralt, Fajardo, PR 00738
Phone: 787-801-7710    Fax: 787-801-7710
Dr. Howard John Wetterer, M.D.
General Practice
Medicare: Medicare Enrolled
Practice Location: Ave. General Valero 313, Suite A, Fajardo, PR 00738
Phone: 787-801-3158    Fax: 787-801-3159
Dr. Gustavo Adolfo Infante Nerys, MD
General Practice
Medicare: Medicare Enrolled
Practice Location: 404 Ave General Valero, Fajardo, PR 00738
Phone: 787-863-0505    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

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