Dr William Gregorie, MD - Medicare Emergency Medicine in Lewiston, ME

Dr William Gregorie, MD is a medicare enrolled "Emergency Medicine" physician in Lewiston, Maine. He went to University Of South Carolina School Of Medicine and graduated in 2007 and has 17 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Tennessee River Physicians, Pllc and his current practice location is 300 Main St, Lewiston, Maine. You can reach out to his office (for appointments etc.) via phone at (207) 795-0111.

Dr William Gregorie is licensed to practice in Maine (license number 018403) 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 1104025832.

Contact Information

Dr William Gregorie, MD
300 Main St,
Lewiston, ME 04240-7027
(207) 795-0111
(207) 795-7193

Map and Direction




Physician's Profile

Full NameDr William Gregorie
GenderMale
SpecialityEmergency Medicine
Experience17 Years
Location300 Main St, Lewiston, 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:
  • Dr William Gregorie attended and graduated from University Of South Carolina School Of Medicine in 2007
  NPI Data:
  • NPI Number: 1104025832
  • Provider Enumeration Date: 07/12/2007
  • Last Update Date: 01/16/2012
  Medicare PECOS Information:
  • PECOS PAC ID: 4082744750
  • Enrollment ID: I20130830000072

Medical Identifiers

Medical identifiers for Dr William Gregorie such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1104025832NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 018403 (Maine)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Erlanger Medical CenterChattanooga, TNHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Tennessee River Physicians, Pllc802238734965

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 William Gregorie allows following entities to bill medicare on his behalf.
Entity NameTennessee River Physicians, Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1396282463
PECOS PAC ID: 8022387349
Enrollment ID: O20170629002555

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 William Gregorie 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 William Gregorie, MD
300 Main St,
Lewiston, ME 04240-7027

Ph: (207) 795-0111
Dr William Gregorie, MD
300 Main St,
Lewiston, ME 04240-7027

Ph: (207) 795-0111

Reviews and Comments


Emergency Medicine Doctors in Lewiston, ME

Tamara Willoughby, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 300 Main St, Lewiston, ME 04240
Phone: 207-795-5011    Fax: 207-753-7201
William D Collins,
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Medicare: Accepting Medicare Assignments
Practice Location: 93 Campus Ave, Lewiston, ME 04240
Phone: 207-777-8120    Fax: 207-777-8984
Dr. Carl Frankthomas Daniel, DO
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 300 Main St, Lewiston, ME 04240
Phone: 207-795-0111    Fax: 207-795-2766
Dr. Sheldon Stevenson, D.O.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 Main St, Lewiston, ME 04240
Phone: 207-795-0111    
Jordan Patrick Maresh, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 Main St, Lewiston, ME 04240
Phone: 207-795-0111    
Alfred Riel, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 300 Main St, Lewiston, ME 04240
Phone: 207-795-0111    Fax: 207-795-7193

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.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.