Don J Williams, MD in Oak Park, IL - Medicare Internal Medicine

Don J Williams, MD is a medicare enrolled "Internal Medicine" physician in Oak Park, Illinois. He graduated from medical school in 1986 and has 38 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Endeavor Health Medical Group and his current practice location is 1100 Lake St Ste 230, Oak Park, Illinois. You can reach out to his office (for appointments etc.) via phone at (331) 221-9001.

Don J Williams is licensed to practice in Illinois (license number 036081395) 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 1447288287.

Contact Information

	Don J Williams, MD
	1100 Lake St Ste 230, Oak Park, IL 60301-1095
	(331) 221-9001
	(331) 221-2759

Map and Direction

Physician's Profile

Full Name	Don J Williams
Gender	Male
Speciality	Internal Medicine
Experience	38 Years
Location	1100 Lake St Ste 230, Oak Park, Illinois
Accepts Medicare Assignments	Yes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.

Medical Education and Training:

Don J Williams graduated from medical school in 1986

NPI Data:

NPI Number: 1447288287
Provider Enumeration Date: 06/29/2006
Last Update Date: 05/19/2022

Medicare PECOS Information:

PECOS PAC ID: 6800800079
Enrollment ID: I20060127000104

Medical Identifiers

Medical identifiers for Don J Williams such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1447288287	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207R00000X	Internal Medicine	036081395 (Illinois)	Primary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Residential Home Health	Downers grove, IL	Home health agency
Elmhurst Memorial Hospital	Elmhurst, IL	Hospital
Edward Hospital	Naperville, IL	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
Endeavor Health Medical Group	2163334699	2710

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. Don J Williams allows following entities to bill medicare on his behalf.

Entity Name	Elmhurst Memorial Healthcare
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1457493454 PECOS PAC ID: 9638168602 Enrollment ID: O20040506001298

Entity Name	Northshore University Healthsystem Faculty Practice Associates
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1497701882 PECOS PAC ID: 2163334699 Enrollment ID: O20040524000118

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. Don 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 Address	Practice Location Address
Don J Williams, MD 4201 Winfield Rd Fl 4, Warrenville, IL 60555-4025 Ph: (331) 221-6377	Don J Williams, MD 1100 Lake St Ste 230, Oak Park, IL 60301-1095 Ph: (331) 221-9001

Reviews and Comments

Internal Medicine Doctors in Oak Park, IL

Dr. Kristen Eileen Tobin Vealey, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 1121 South Blvd, Oak Park, IL 60302 Phone: 708-745-5744 Fax: 708-398-6890
Mr. Daniel B Stroupe, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 610 S Maple Ave Ste 4050, Oak Park, IL 60304 Phone: 708-383-0943 Fax: 708-613-4382
Dr. Ankur Sethi, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 7035 North Ave, Oak Park, IL 60302 Phone: 708-680-3800
Dr. Terry Lynn Clarbour, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 1033 Randolph St, Oak Park, IL 60302 Phone: 708-955-8033 Fax: 708-445-8444
Paul Balter, MD Internal Medicine Medicare: Not Enrolled in Medicare Practice Location: 855 Madison St, Oak Park, IL 60302 Phone: 708-386-1000 Fax: 708-386-2394
Steve Michel, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 965 Lake St, Oak Park, IL 60301 Phone: 708-386-3000
Max L Harris, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 3 Erie Ct, L700, Oak Park, IL 60302 Phone: 708-763-2536 Fax: 708-383-7655

Don J Williams, MD - Medicare Internal Medicine in Oak Park, IL