Wesley P Fairfield, MD, ECNU - Medicare Endocrinology in Portland, ME

Wesley P Fairfield, MD, ECNU is a medicare enrolled "Internal Medicine - Endocrinology, Diabetes & Metabolism" physician in Portland, Maine. He went to Harvard Medical School and graduated in 1995 and has 29 years of diverse experience with area of expertise as Endocrinology. He is a member of the group practice Mercy Hospital and his current practice location is 144 State St Fl 4, Portland, Maine. You can reach out to his office (for appointments etc.) via phone at (207) 400-8500.

Wesley P Fairfield is licensed to practice in Maine (license number 015822) 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 1437138955.

Contact Information

Wesley P Fairfield, MD, ECNU
144 State St Fl 4,
Portland, ME 04101-3776
(207) 400-8500
(207) 400-8508

Map and Direction




Physician's Profile

Full NameWesley P Fairfield
GenderMale
SpecialityEndocrinology
Experience29 Years
Location144 State St Fl 4, Portland, Maine
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Wesley P Fairfield attended and graduated from Harvard Medical School in 1995
  NPI Data:
  • NPI Number: 1437138955
  • Provider Enumeration Date: 01/12/2006
  • Last Update Date: 03/18/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 3577506989
  • Enrollment ID: I20050607000544

Medical Identifiers

Medical identifiers for Wesley P Fairfield such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1437138955NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RE0101XInternal Medicine - Endocrinology, Diabetes & Metabolism 015822 (Maine)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Northern Light Mercy HospitalPortland, MEHospital
Central Maine Medical CenterLewiston, MEHospital
Stephens Memorial HospitalNorway, MEHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mercy Hospital6103737812207

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. Wesley P Fairfield allows following entities to bill medicare on his behalf.
Entity NameMercy Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629078712
PECOS PAC ID: 6103737812
Enrollment ID: O20040217000943
Entity NameCentral Maine Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1689653487
PECOS PAC ID: 2567379563
Enrollment ID: O20040324000441

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. Wesley P Fairfield 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
Wesley P Fairfield, MD, ECNU
287 Main St,
Lewiston, ME 04240-7054

Ph: (207) 795-7520
Wesley P Fairfield, MD, ECNU
144 State St Fl 4,
Portland, ME 04101-3776

Ph: (207) 400-8500

Reviews and Comments


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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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