Dr William Francis Callahan, OD - Medicare Optometrist in Marshfield, MA

Dr William Francis Callahan, OD is a medicare enrolled "Optometrist" provider in Marshfield, Massachusetts. He went to New England College Of Optometry and graduated in 1983 and has 41 years of diverse experience with area of expertise as Optometry. His current practice location is 462 Plain St, Suite 104, Marshfield, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (781) 837-9956.

Dr William Francis Callahan is licensed to practice in Massachusetts (license number 3071) 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 1568536357.

Contact Information

Dr William Francis Callahan, OD
462 Plain St, Suite 104,
Marshfield, MA 02050-2731
(781) 837-9956
(781) 837-9950

Map and Direction




Healthcare Provider's Profile

Full NameDr William Francis Callahan
GenderMale
SpecialityOptometry
Experience41 Years
Location462 Plain St, Marshfield, Massachusetts
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 Francis Callahan attended and graduated from New England College Of Optometry in 1983
  NPI Data:
  • NPI Number: 1568536357
  • Provider Enumeration Date: 11/20/2006
  • Last Update Date: 08/23/2012
  Medicare PECOS Information:
  • PECOS PAC ID: 4880853688
  • Enrollment ID: I20120314000702

Medical Identifiers

Medical identifiers for Dr William Francis Callahan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1568536357NPI-NPPES
0352276MedicaidMA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
152W00000XOptometrist 3071 (Massachusetts)Primary

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 Francis Callahan 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 Francis Callahan, OD
462 Plain St, Suite 104,
Marshfield, MA 02050-2731

Ph: (781) 837-9956
Dr William Francis Callahan, OD
462 Plain St, Suite 104,
Marshfield, MA 02050-2731

Ph: (781) 837-9956

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.

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.