Robert R Mcwilliams, MD in Peoria, IL - Medicare Medical Oncology

Robert R Mcwilliams, MD is a medicare enrolled "Internal Medicine - Medical Oncology" physician in Peoria, Illinois. He went to Georgetown University School Of Medicine and graduated in 1997 and has 29 years of diverse experience with area of expertise as Medical Oncology. He is a member of the group practice Mayo Clinic and his current practice location is 530 Ne Glen Oak Ave, Peoria, Illinois. You can reach out to his office (for appointments etc.) via phone at (309) 655-2000.

Robert R Mcwilliams is licensed to practice in Illinois (license number 036131628) 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 1487633962.

Contact Information

	Robert R Mcwilliams, MD
	530 Ne Glen Oak Ave, Peoria, IL 61637-0001
	(309) 655-2000
	Not Available

Map and Direction

Physician's Profile

Full Name	Robert R Mcwilliams
Gender	Male
Speciality	Medical Oncology
Experience	29 Years
Location	530 Ne Glen Oak Ave, Peoria, 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:

Robert R Mcwilliams attended and graduated from Georgetown University School Of Medicine in 1997

NPI Data:

NPI Number: 1487633962
Provider Enumeration Date: 01/12/2006
Last Update Date: 02/25/2026

Medicare PECOS Information:

PECOS PAC ID: 2961452396
Enrollment ID: I20050124001040

Medical Identifiers

Medical identifiers for Robert R Mcwilliams such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1487633962	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207R00000X	Internal Medicine	036131628 (Illinois)	Secondary
207RH0003X	Internal Medicine - Hematology & Oncology	44014 (Minnesota)	Secondary
207RX0202X	Internal Medicine - Medical Oncology	44014 (Minnesota)	Secondary
207RX0202X	Internal Medicine - Medical Oncology	036131628 (Illinois)	Primary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Mayo Clinic Hospital Rochester	Rochester, MN	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
Mayo Clinic	6507778255	4507

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. Robert R Mcwilliams allows following entities to bill medicare on his behalf.

Entity Name	Mayo Clinic
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1922074434 PECOS PAC ID: 6507778255 Enrollment ID: O20031103000285

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. Robert R Mcwilliams 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
Robert R Mcwilliams, MD 30791 High Rd, Fountain, MN 55935-5147 Ph: (507) 358-5982	Robert R Mcwilliams, MD 530 Ne Glen Oak Ave, Peoria, IL 61637-0001 Ph: (309) 655-2000

Reviews and Comments

Internal Medicine Doctors in Peoria, IL

Riaz Shah, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 221 Ne Glen Oak Ave, Suite 504, Peoria, IL 61636 Phone: 309-672-5729
Dr. James Daniel Dewar, D.O. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 530 Ne Glen Oak Ave, Peoria, IL 61637 Phone: 309-655-7257
Waqas Ali, MD Internal Medicine Medicare: Not Enrolled in Medicare Practice Location: 221 Ne Glen Oak Ave, Peoria, IL 61636 Phone: 309-672-5522
Dr. Sudhir Mungee, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 5405 North Knoxville Avenue, Peoria, IL 61614 Phone: 309-691-4410 Fax: 309-589-2830
Kumarpal Shrishrimal, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 420 Ne Glen Oak Ave Ste 401, Peoria, IL 61603 Phone: 309-676-8123 Fax: 309-676-8455
Dr. Nikesh Kavi Patel, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 530 Ne Glen Oak Ave, Peoria, IL 61637 Phone: 309-655-6384 Fax: 309-655-7732
Christine C Perks, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 5405 N Knoxville Ave, Peoria, IL 61614 Phone: 309-691-4410 Fax: 309-692-4730

Robert R Mcwilliams, MD - Medicare Medical Oncology in Peoria, IL