Derrick Williamson, DO - Medicare Family Practice in Southfield, MI

Derrick Williamson, DO is a medicare enrolled "Family Medicine" physician in Southfield, Michigan. He went to Michigan State University College Of Osteopathic Medicine and graduated in 1985 and has 39 years of diverse experience with area of expertise as Family Practice. His current practice location is 20755 Greenfield Rd Ste 100, Southfield, Michigan. You can reach out to his office (for appointments etc.) via phone at (947) 282-5009.

Derrick Williamson is licensed to practice in Michigan (license number 5101009333) 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 1215922059.

Contact Information

Derrick Williamson, DO
20755 Greenfield Rd Ste 100,
Southfield, MI 48075-5400
(947) 282-5009
(248) 809-2319

Map and Direction




Physician's Profile

Full NameDerrick Williamson
GenderMale
SpecialityFamily Practice
Experience39 Years
Location20755 Greenfield Rd Ste 100, Southfield, Michigan
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:
  • Derrick Williamson attended and graduated from Michigan State University College Of Osteopathic Medicine in 1985
  NPI Data:
  • NPI Number: 1215922059
  • Provider Enumeration Date: 09/19/2005
  • Last Update Date: 11/02/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 3173605805
  • Enrollment ID: I20080201000541

Medical Identifiers

Medical identifiers for Derrick Williamson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1215922059NPI-NPPES
1215922059MedicaidMI
437095911MedicaidMI

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208D00000XGeneral Practice DW009333 (Michigan)Secondary
207Q00000XFamily Medicine 5101009333 (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. Derrick Williamson allows following entities to bill medicare on his behalf.
Entity NamePremier Family Medicine Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1194147959
PECOS PAC ID: 1557593365
Enrollment ID: O20140409002284
Entity NameUltimate Medical Care Plc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1063120244
PECOS PAC ID: 8123493806
Enrollment ID: O20230411002017

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. Derrick Williamson 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
Derrick Williamson, DO
20755 Greenfield Rd Ste 100,
Southfield, MI 48075-5400

Ph: (947) 282-5009
Derrick Williamson, DO
20755 Greenfield Rd Ste 100,
Southfield, MI 48075-5400

Ph: (947) 282-5009

Reviews and Comments


Family Medicine Doctors in Southfield, MI

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Dr. Cheryl Lee Smith, M.D.
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Practice Location: 22250 Providence Dr, Suite 500, Southfield, MI 48075
Phone: 248-849-3441    

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.