Ms Karen B Duffy, MD - Medicare Emergency Medicine in Madison, TN

Ms Karen B Duffy, MD is a medicare enrolled "General Practice" physician in Madison, Tennessee. She went to University Of Tennessee, Hsc, College Of Medicine and graduated in 1973 and has 51 years of diverse experience with area of expertise as Emergency Medicine. She is a member of the group practice Impact Healthcare, Pllc and her current practice location is 1210 Briarville Road, Blding B, Madison, Tennessee. You can reach out to her office (for appointments etc.) via phone at (615) 868-9959.

Ms Karen B Duffy is licensed to practice in Tennessee (license number MD0000008280) and she also participates in the medicare program. She may accept medicare assignments (which means she may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance) and her NPI Number is 1174543516.

Contact Information

Ms Karen B Duffy, MD
1210 Briarville Road, Blding B,
Madison, TN 37115
(615) 868-9959
(615) 865-1463

Map and Direction




Physician's Profile

Full NameMs Karen B Duffy
GenderFemale
SpecialityEmergency Medicine
Experience51 Years
Location1210 Briarville Road, Madison, Tennessee
Accepts Medicare AssignmentsMay be. She may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Ms Karen B Duffy attended and graduated from University Of Tennessee, Hsc, College Of Medicine in 1973
  NPI Data:
  • NPI Number: 1174543516
  • Provider Enumeration Date: 07/20/2006
  • Last Update Date: 05/30/2018
  Medicare PECOS Information:
  • PECOS PAC ID: 1759373038
  • Enrollment ID: I20040330001089

Medical Identifiers

Medical identifiers for Ms Karen B Duffy such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1174543516NPI-NPPES
3185053MedicaidTN

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208D00000XGeneral Practice MD0000008280 (Tennessee)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Impact Healthcare, Pllc599106542710

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. Ms Karen B Duffy allows following entities to bill medicare on her behalf.
Entity NameImpact Healthcare, Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1487185153
PECOS PAC ID: 5991065427
Enrollment ID: O20180201001424

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. Ms Karen B Duffy 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
Ms Karen B Duffy, MD
1210 Briarville Road, Building B,
Madison, TN 37115

Ph: (615) 868-9959
Ms Karen B Duffy, MD
1210 Briarville Road, Blding B,
Madison, TN 37115

Ph: (615) 868-9959

Reviews and Comments


General Practice Doctors in Madison, TN

Dr. George Herda, M.D.
General Practice
Medicare: Not Enrolled in Medicare
Practice Location: 1616 Gallatin Pike N, Madison, TN 37115
Phone: 615-865-8500    Fax: 615-860-8061
Dr. Robert Lewis Cranfield, M.D.
General Practice
Medicare: Not Enrolled in Medicare
Practice Location: 1616 Gallatin Rd N, Madison, TN 37115
Phone: 615-865-8500    Fax: 615-860-8061

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.