Michael Gregory Williams, MD in Southfield, MI

Michael Gregory Williams, MD is a medicare enrolled "Emergency Medicine" physician in Southfield, Michigan. His current practice location is 20411 W 12 Mile Rd Ste 102, Southfield, Michigan. You can reach out to his office (for appointments etc.) via phone at (248) 905-3194.

Michael Gregory Williams is licensed to practice in Michigan (license number MW049187) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1578561304.

Contact Information

	Michael Gregory Williams, MD
	20411 W 12 Mile Rd Ste 102, Southfield, MI 48076-6404
	(248) 905-3194
	(248) 905-3548

Map and Direction

Physician's Profile

Full Name	Michael Gregory Williams
Gender	Male
Speciality	Emergency Medicine
Location	20411 W 12 Mile Rd Ste 102, Southfield, Michigan
Accepts Medicare Assignments	Medicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.

NPI Data:

NPI Number: 1578561304
Provider Enumeration Date: 07/14/2005
Last Update Date: 08/21/2025

Medicare PECOS Information:

PECOS PAC ID: 3274429303
Enrollment ID: I20040225001026

Medical Identifiers

Medical identifiers for Michael Gregory Williams such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1578561304	NPI	-	NPPES
P00943709	Other	MI	RAILROAD MEDICARE IND PIN
1578561304	Medicaid	MI
0108118302	Other	MI	BCBS IND

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
208D00000X	General Practice	4301049187 (Michigan)	Secondary
207P00000X	Emergency Medicine	MW049187 (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. Michael Gregory Williams allows following entities to bill medicare on his behalf.

Entity Name	Theoria Medical
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1609362375 PECOS PAC ID: 5395098339 Enrollment ID: O20181004002127

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. Michael Gregory 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 Address	Practice Location Address
Michael Gregory Williams, MD 20411 W 12 Mile Rd Ste 102, Southfield, MI 48076-6404 Ph: (248) 905-3194	Michael Gregory Williams, MD 20411 W 12 Mile Rd Ste 102, Southfield, MI 48076-6404 Ph: (248) 905-3194

Reviews and Comments

Emergency Medicine Doctors in Southfield, MI

Dr. Lindsay Anne Richmond-pruneau, M.D. Emergency Medicine Medicare: Accepting Medicare Assignments Practice Location: 16001 W 9 Mile Rd, Southfield, MI 48075 Phone: 248-849-3000
Dr. James Bishop Jr., M.D. Emergency Medicine Medicare: Accepting Medicare Assignments Practice Location: 16001 W 9 Mile Rd, Southfield, MI 48075 Phone: 248-849-3000
Dr. Howard Fertel, D.O. Emergency Medicine Medicare: Accepting Medicare Assignments Practice Location: 16001 W 9 Mile Rd, Southfield, MI 48075 Phone: 248-849-3000
Dr. Ann Marsh-senic, M.D. Emergency Medicine Medicare: Accepting Medicare Assignments Practice Location: 16001 W 9 Mile Rd, Southfield, MI 48075 Phone: 248-849-3000
Dr. Gary Pilchak, D.O. Emergency Medicine Medicare: Not Enrolled in Medicare Practice Location: 16001 W 9 Mile Rd, Southfield, MI 48075 Phone: 248-849-3000
Dr. Nirmal Nandakumar, D.O. Emergency Medicine Medicare: Accepting Medicare Assignments Practice Location: 16001 W 9 Mile Rd, Southfield, MI 48075 Phone: 248-849-3000
Andrew Solway, MD Emergency Medicine Medicare: Medicare Enrolled Practice Location: 16001 W 9 Mile Rd, Southfield, MI 48075 Phone: 248-849-2407

Michael Gregory Williams, MD - Medicare Emergency Medicine in Southfield, MI