Seamus Mark, MD - Medicare Family Practice in Millis, MA

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Seamus Mark, MD is a medicare enrolled "Family Medicine" physician in Millis, Massachusetts. He went to Icahn School Of Medicine At Mount Sinai and graduated in 2006 and has 18 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Newton-wellesley Medical Group, Inc. and his current practice location is 969 Main Street, Suite 205, Millis, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (508) 376-3000.

Seamus Mark is licensed to practice in Massachusetts (license number 238902) 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 1538212477.

Contact Information

Seamus Mark, MD
969 Main Street, Suite 205,
Millis, MA 02054
(508) 376-3000
(508) 376-3024

Map and Direction




Physician's Profile

Full NameSeamus Mark
GenderMale
SpecialityFamily Practice
Experience18 Years
Location969 Main Street, Millis, 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:
  • Seamus Mark attended and graduated from Icahn School Of Medicine At Mount Sinai in 2006
  NPI Data:
  • NPI Number: 1538212477
  • Provider Enumeration Date: 01/22/2007
  • Last Update Date: 06/18/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 7719033810
  • Enrollment ID: I20090915000148

Medical Identifiers

Medical identifiers for Seamus Mark such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1538212477NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 238902 (Massachusetts)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Newton-wellesley HospitalNewton, MAHospital
Brigham And Women's HospitalBoston, MAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Newton-wellesley Medical Group, Inc.0244133494392

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. Seamus Mark allows following entities to bill medicare on his behalf.
Entity NameNewton-wellesley Medical Group, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1538191218
PECOS PAC ID: 0244133494
Enrollment ID: O20040127001012
Entity NameReliant Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1720017528
PECOS PAC ID: 5597755322
Enrollment ID: O20040708000650
Entity NameSteward Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629398219
PECOS PAC ID: 2860688728
Enrollment ID: O20101119000007
Entity NameSteward Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629398219
PECOS PAC ID: 2860688728
Enrollment ID: O20101119000332

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. Seamus Mark 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
Seamus Mark, MD
969 Main Street, Suite 205,
Millis, MA 02054

Ph: (508) 376-3000		Seamus Mark, MD
969 Main Street, Suite 205,
Millis, MA 02054

Ph: (508) 376-3000

Reviews and Comments


Family Medicine Doctors in Millis, MA

Nicholas W Phillips Iii, DO
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 730 Main St, Millis, MA 02054
Phone: 508-376-2515    Fax: 508-376-9932
Kathryn R Ellis, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 730 Main St, 1a, Millis, MA 02054
Phone: 508-376-2515    Fax: 508-376-9932
Steven L. Bornstein, D.O.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 969 Main St, Millis, MA 02054
Phone: 508-376-1125    Fax: 508-376-1102

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.