Dr Thomas Patrick O'connor Jr, MD - Medicare Hematology/oncology in Weymouth, MA

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Dr Thomas Patrick O'connor Jr, MD is a medicare enrolled "Internal Medicine" physician in Weymouth, Massachusetts. He went to State University Of New York At Buffalo School Of Medicine and graduated in 2001 and has 23 years of diverse experience with area of expertise as Hematology/oncology. He is a member of the group practice Dana-farber Cancer Institute, Inc. and his current practice location is 51 Performance Dr, Suite #110, Weymouth, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (781) 337-9091.

Dr Thomas Patrick O'connor Jr is licensed to practice in District Of Columbia (license number MD035011) 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 1669507141.

Contact Information

Dr Thomas Patrick O'connor Jr, MD
51 Performance Dr, Suite #110,
Weymouth, MA 02189-3141
(781) 337-9091
Not Available

Map and Direction




Physician's Profile

Full NameDr Thomas Patrick O'connor Jr
GenderMale
SpecialityHematology/oncology
Experience23 Years
Location51 Performance Dr, Weymouth, 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 Thomas Patrick O'connor Jr attended and graduated from State University Of New York At Buffalo School Of Medicine in 2001
  NPI Data:
  • NPI Number: 1669507141
  • Provider Enumeration Date: 02/23/2007
  • Last Update Date: 01/21/2014
  Medicare PECOS Information:
  • PECOS PAC ID: 4880795145
  • Enrollment ID: I20070731000287

Medical Identifiers

Medical identifiers for Dr Thomas Patrick O'connor Jr such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1669507141NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine MD035011 (District Of Columbia)Primary
207RH0003XInternal Medicine - Hematology & Oncology 231774 (Massachusetts)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Nvna And HospiceNorwell, MAHospice
South Shore HospitalSouth weymouth, MAHospital
Brigham And Women's HospitalBoston, MAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Dana-farber Cancer Institute, Inc.9133038904538

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 Thomas Patrick O'connor Jr allows following entities to bill medicare on his behalf.
Entity NameDana-farber Cancer Institute, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1346433257
PECOS PAC ID: 9133038904
Enrollment ID: O20040223000142
Entity NameDana-farber Cancer Institute, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1851333686
PECOS PAC ID: 9133038904
Enrollment ID: O20040223000228
Entity NameDana-farber Cancer Care Network, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1902224496
PECOS PAC ID: 1456578954
Enrollment ID: O20140806002173

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 Thomas Patrick O'connor Jr 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 Thomas Patrick O'connor Jr, MD
10 Willard St,
Quincy, MA 02169-1281

Ph: (617) 479-1452		Dr Thomas Patrick O'connor Jr, MD
51 Performance Dr, Suite #110,
Weymouth, MA 02189-3141

Ph: (781) 337-9091

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).

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