Brian J Williams, MD - Medicare Neurosurgery in Louisville, KY

Brian J Williams, MD is a medicare enrolled "Neurological Surgery" physician in Louisville, Kentucky. He went to Baylor College Of Medicine and graduated in 2008 and has 16 years of diverse experience with area of expertise as Neurosurgery. He is a member of the group practice University Of Louisville Physicians Inc, University Of Louisville Physicians Inc and his current practice location is 220 Abraham Flexner Way Ste 1200, Louisville, Kentucky. You can reach out to his office (for appointments etc.) via phone at (502) 899-3623.

Brian J Williams is licensed to practice in Kentucky (license number 49416) 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 1548436660.

Contact Information

Brian J Williams, MD
220 Abraham Flexner Way Ste 1200,
Louisville, KY 40202
(502) 899-3623
(502) 899-7970

Map and Direction




Physician's Profile

Full NameBrian J Williams
GenderMale
SpecialityNeurosurgery
Experience16 Years
Location220 Abraham Flexner Way Ste 1200, Louisville, Kentucky
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:
  • Brian J Williams attended and graduated from Baylor College Of Medicine in 2008
  NPI Data:
  • NPI Number: 1548436660
  • Provider Enumeration Date: 05/08/2008
  • Last Update Date: 04/24/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 4486883113
  • Enrollment ID: I20160628003148

Medical Identifiers

Medical identifiers for Brian J Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1548436660NPI-NPPES
349800801MedicaidTX
201131680MedicaidIN
7100408810MedicaidKY

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207T00000XNeurological Surgery Q4340 (Texas)Secondary
207T00000XNeurological Surgery 49416 (Kentucky)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
University Of Louisville HospitalLouisville, KYHospital
Jewish Hospital & St Mary's HealthcareLouisville, KYHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
University Of Louisville Physicians Inc34767255991111
University Of Louisville Physicians Inc34767255991111

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. Brian J Williams allows following entities to bill medicare on his behalf.
Entity NameUniversity Of Louisville Physicians Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1366722316
PECOS PAC ID: 3476725599
Enrollment ID: O20111017000036

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. Brian J Williams 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
Brian J Williams, MD
Po Box 909,
Louisville, KY 40201-0909

Ph: () -
Brian J Williams, MD
220 Abraham Flexner Way Ste 1200,
Louisville, KY 40202

Ph: (502) 899-3623

Reviews and Comments


Neurological Surgery Doctors in Louisville, KY

Maxwell Boakye, M.D.
Neurological Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 220 Abraham Flexner Way Ste 1200, Louisville, KY 40202
Phone: 502-899-3623    
John Joseph Guarnaschelli, MD
Neurological Surgery
Medicare: Not Enrolled in Medicare
Practice Location: 234 E Gray St, Suite 768, Louisville, KY 40202
Phone: 502-584-4121    Fax: 502-584-6626
Abigail Justine Rao, M.D.
Neurological Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 4950 Norton Healthcare Blvd Ste 205, Louisville, KY 40241
Phone: 502-394-6390    Fax: 502-394-6388
Dr. Aurora Seaton Cruz, MD
Neurological Surgery
Medicare: Medicare Enrolled
Practice Location: 4003 Kresge Way Ste 400, Louisville, KY 40207
Phone: 502-259-5955    Fax: 502-259-5953
Dr. Maria Koutourousiou, M.D.
Neurological Surgery
Medicare: Not Enrolled in Medicare
Practice Location: 200 Abraham Flexner Way, Se #1200, Louisville, KY 40202
Phone: 502-899-3623    Fax: 502-899-7970
Nathaniel Todnem, MD
Neurological Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 3900 Kresge Way Ste 51, Louisville, KY 40207
Phone: 502-259-5955    
Norberto Omar Andaluz, MD
Neurological Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 220 Abraham Flexner Way Ste 1200, Louisville, KY 40202
Phone: 502-899-3623    Fax: 502-899-7970

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.