Dr Gretchen Martinez Alayon, MD - Medicare Internal Medicine in Hatillo, PR

Dr Gretchen Martinez Alayon, MD is a medicare enrolled "Internal Medicine" physician in Hatillo, Puerto Rico. She graduated from medical school in 2002 and has 22 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Mid Fl Hospital Specialists and her current practice location is Hc 6 Box 14310, Hatillo, Puerto Rico. You can reach out to her office (for appointments etc.) via phone at (787) 484-8454.

Dr Gretchen Martinez Alayon is licensed to practice in Puerto Rico (license number 18435) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1942465661.

Contact Information

Dr Gretchen Martinez Alayon, MD
Hc 6 Box 14310,
Hatillo, PR 00659-6602
(787) 484-8454
Not Available



Physician's Profile

Full NameDr Gretchen Martinez Alayon
GenderFemale
SpecialityInternal Medicine
Experience22 Years
LocationHc 6 Box 14310, Hatillo, Puerto Rico
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Gretchen Martinez Alayon graduated from medical school in 2002
  NPI Data:
  • NPI Number: 1942465661
  • Provider Enumeration Date: 07/22/2008
  • Last Update Date: 04/23/2012
  Medicare PECOS Information:
  • PECOS PAC ID: 6103077276
  • Enrollment ID: I20121119000538

Medical Identifiers

Medical identifiers for Dr Gretchen Martinez Alayon such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1942465661NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 18435 (Puerto Rico)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Adventhealth OrlandoOrlando, FLHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mid Fl Hospital Specialists509262810754

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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 Gretchen Martinez Alayon allows following entities to bill medicare on her behalf.
Entity NameMid Fl Hospital Specialists
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1588675912
PECOS PAC ID: 5092628107
Enrollment ID: O20031106000013

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Entity NameCentral Florida Inpatient Medicine Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1649228859
PECOS PAC ID: 7911805254
Enrollment ID: O20031223000824

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Entity NameValue Based Inpatient Specialist
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1790260388
PECOS PAC ID: 9436589553
Enrollment ID: O20200413003448

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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 Gretchen Martinez Alayon 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
Dr Gretchen Martinez Alayon, MD
Hc 6 Box 14310,
Hatillo, PR 00659-6602

Ph: () -
Dr Gretchen Martinez Alayon, MD
Hc 6 Box 14310,
Hatillo, PR 00659-6602

Ph: (787) 484-8454

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Internal Medicine Doctors in Hatillo, PR

Juan Toledo Diaz, MD
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: Hc 04 Box 30580, Hatillo, PR 00659
Phone: 787-226-5922    
Samuel Rivera, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: Policlinica Bayaney Carr 129 Km. 15.1, Barrio Bayaney, Hatillo, PR 00659
Phone: 787-898-7990    
Dr. Gabriel G Torres, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: Carretera 129 Km 15.0 Hatill P.r.00659, Bayaney Profesional Plaza, Hatillo, PR 00659
Phone: 787-898-2206    Fax: 787-898-2206
Jose Manuel Betancourt, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: Hc 06 Box 14280, Hatillo, PR 00659
Phone: 787-408-7169    
Dr. Juan Jose Nieves-rivera, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: Pr-130 Km. 11.8, Bo. Campo Alegre, Hatillo, PR 00659
Phone: 787-898-8777    Fax: 787-933-8497
Janice Mariel Cuevas Rivera, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: Parcelas Capaez Calle F, Casa 196 Bo. Capaez, Hatillo, PR 00659
Phone: 787-432-8329    
Dr. Luis F Sotomayor, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: Ave. Dr. Susoni, # 284 B, Hatillo, PR 00659
Phone: 787-898-3387    Fax: 787-898-3387

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