William Davenport Powlis, MD - Medicare Radiation Oncology in South Weymouth, MA

William Davenport Powlis, MD is a medicare enrolled "Radiology - Radiation Oncology" physician in South Weymouth, Massachusetts. He went to Columbia University College Of Physicians And Surgeons and graduated in 1973 and has 51 years of diverse experience with area of expertise as Radiation Oncology. He is a member of the group practice Radiation Therapy Of Southeastern Mass, Llc and his current practice location is 101 Columbian St, Radiation Oncology, South Weymouth, Massachusetts. You can reach out to his office (for appointments etc.) via phone at (781) 624-4700.

William Davenport Powlis is licensed to practice in Massachusetts (license number 38122) 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 1083656771.

Contact Information

William Davenport Powlis, MD
101 Columbian St, Radiation Oncology,
South Weymouth, MA 02190-1601
(781) 624-4700
(781) 624-4710

Map and Direction




Physician's Profile

Full NameWilliam Davenport Powlis
GenderMale
SpecialityRadiation Oncology
Experience51 Years
Location101 Columbian St, South 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:
  • William Davenport Powlis attended and graduated from Columbia University College Of Physicians And Surgeons in 1973
  NPI Data:
  • NPI Number: 1083656771
  • Provider Enumeration Date: 06/10/2006
  • Last Update Date: 08/24/2015
  Medicare PECOS Information:
  • PECOS PAC ID: 7416919915
  • Enrollment ID: I20121011000432

Medical Identifiers

Medical identifiers for William Davenport Powlis such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1083656771NPI-NPPES
0011060870002MedicaidTN
487351OtherPAHIGHMARK BCBS

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2085R0001XRadiology - Radiation Oncology MD027906E (Pennsylvania)Secondary
2085R0001XRadiology - Radiation Oncology 38122 (Massachusetts)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Radiation Therapy Of Southeastern Mass, Llc93352483438

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. William Davenport Powlis 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: 1851333686
PECOS PAC ID: 9133038904
Enrollment ID: O20040223000228
Entity NameBrigham And Women's Physicians Organization Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1427076967
PECOS PAC ID: 3870405988
Enrollment ID: O20040322001122
Entity NameRadiation Therapy Of Southeastern Mass, Llc
Entity TypePart B Supplier - Radiation Therapy Center
Entity IdentifiersNPI Number: 1104978519
PECOS PAC ID: 9335248343
Enrollment ID: O20070615000252
Entity NameBrigham And Women's Physicians Organization Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1033535497
PECOS PAC ID: 3870405988
Enrollment ID: O20150107001260
Entity NameBrigham And Women's Physicians Organization Inc
Entity TypePart B Supplier - Radiation Therapy Center
Entity IdentifiersNPI Number: 1902469679
PECOS PAC ID: 3870405988
Enrollment ID: O20190711000658

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. William Davenport Powlis 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
William Davenport Powlis, MD
101 Columbian St, Radiation Oncology,
South Weymouth, MA 02190-1601

Ph: (781) 624-4700
William Davenport Powlis, MD
101 Columbian St, Radiation Oncology,
South Weymouth, MA 02190-1601

Ph: (781) 624-4700

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.