Kathryn L Williams, MD - Medicare Emergency Medicine in Ann Arbor, MI

Kathryn L Williams, MD is a medicare enrolled "Emergency Medicine" physician in Ann Arbor, Michigan. Her current practice location is 2000 Green Rd., Suite 100, Ann Arbor, Michigan. You can reach out to her office (for appointments etc.) via phone at (734) 995-3764.

Kathryn L Williams is licensed to practice in Michigan (license number 4301047615) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1124046479.

Contact Information

Kathryn L Williams, MD
2000 Green Rd., Suite 100,
Ann Arbor, MI 48105
(734) 995-3764
(208) 475-9028

Map and Direction




Physician's Profile

Full NameKathryn L Williams
GenderFemale
SpecialityEmergency Medicine
Location2000 Green Rd., Ann Arbor, Michigan
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1124046479
  • Provider Enumeration Date: 07/17/2006
  • Last Update Date: 07/08/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 6103859335
  • Enrollment ID: I20050916000868

Medical Identifiers

Medical identifiers for Kathryn L Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1124046479NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 4301047615 (Michigan)Primary

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. Kathryn L Williams allows following entities to bill medicare on her behalf.
Entity NameSt Joseph Mercy Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1659499705
PECOS PAC ID: 3779489281
Enrollment ID: O20040226001002

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. Kathryn L 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
Kathryn L Williams, MD
2000 Green Rd., Suite 100,
Ann Arbor, MI 48105

Ph: (734) 995-3764
Kathryn L Williams, MD
2000 Green Rd., Suite 100,
Ann Arbor, MI 48105

Ph: (734) 995-3764

Reviews and Comments


Emergency Medicine Doctors in Ann Arbor, MI

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Kylee E Phillips, MD
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Phone: 734-936-6666    
Abhinav Nafday,
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Medicare: Medicare Enrolled
Practice Location: 1500 E Medical Center Drive, Ann Arbor, MI 48109
Phone: 734-763-7919    Fax: 734-763-9298
Michelle Feeney, MD
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Medicare: Medicare Enrolled
Practice Location: 1500 E. Medical Center Dr., B1-380 Taubman Center, Ann Arbor, MI 48109
Phone: 734-763-7919    Fax: 734-763-9298
Nimra Sohail Hassan, MD, MPH
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Medicare: Not Enrolled in Medicare
Practice Location: 1500 E Medical Center Dr, Ann Arbor, MI 48109
Phone: 734-936-6666    

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.