Dr William E Maher, MD - Medicare Gastroenterology in Somersworth, NH

Dr William E Maher, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Somersworth, New Hampshire. He went to Rutgers New Jersey Medical School and graduated in 1992 and has 32 years of diverse experience with area of expertise as Gastroenterology. He is a member of the group practice Atlantic Digestive Specialists Pllc and his current practice location is 21 Clark Way, Somersworth, New Hampshire. You can reach out to his office (for appointments etc.) via phone at (603) 692-2228.

Dr William E Maher is licensed to practice in New Hampshire (license number 10956) 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 1477550739.

Contact Information

Dr William E Maher, MD
21 Clark Way,
Somersworth, NH 03878-4401
(603) 692-2228
(603) 743-6732

Map and Direction




Physician's Profile

Full NameDr William E Maher
GenderMale
SpecialityGastroenterology
Experience32 Years
Location21 Clark Way, Somersworth, New Hampshire
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 E Maher attended and graduated from Rutgers New Jersey Medical School in 1992
  NPI Data:
  • NPI Number: 1477550739
  • Provider Enumeration Date: 07/01/2005
  • Last Update Date: 09/30/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 5991693392
  • Enrollment ID: I20041001000052

Medical Identifiers

Medical identifiers for Dr William E Maher such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1477550739NPI-NPPES
30201062MedicaidNH

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 10956 (New Hampshire)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Wentworth-douglass HospitalDover, NHHospital
Frisbie Memorial HospitalRochester, NHHospital
Portsmouth Regional HospitalPortsmouth, NHHospital
Huggins HospitalWolfeboro, NHHospital
York HospitalYork, MEHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Atlantic Digestive Specialists Pllc094119832917

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 E Maher allows following entities to bill medicare on his behalf.
Entity NameAtlantic Digestive Specialists Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1316048069
PECOS PAC ID: 0941198329
Enrollment ID: O20040308000758

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 E Maher 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 E Maher, MD
21 Clark Way,
Somersworth, NH 03878-4401

Ph: (603) 692-2228
Dr William E Maher, MD
21 Clark Way,
Somersworth, NH 03878-4401

Ph: (603) 692-2228

Reviews and Comments


Internal Medicine Doctors in Somersworth, NH

Jennifer M Lewis, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 21 Clark Way, Somersworth, NH 03878
Phone: 603-692-2228    Fax: 603-692-4748
Sukeerti Kesar, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 21 Clark Way, Somersworth, NH 03878
Phone: 603-692-2228    Fax: 603-692-4748
Dr. David P Flavin, MD
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 21 Clark Way, Somersworth, NH 03843
Phone: 603-692-2228    Fax: 603-692-0437
Dalia Mahmoud Hassan Elamin, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 21 Clark Way, Somersworth, NH 03878
Phone: 603-692-2228    
Sean Lynch, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 21 Clark Way, Somersworth, NH 03878
Phone: 603-692-2228    
Michael E Metzger, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 3 Terrascape Pkwy, Somersworth, NH 03878
Phone: 603-609-6726    Fax: 603-609-6727

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.