Dr John Ellis Williamson Jr, DO - Medicare Emergency Medicine in Morris, IL

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Dr John Ellis Williamson Jr, DO is a medicare enrolled "Emergency Medicine - Emergency Medical Services" physician in Morris, Illinois. He graduated from medical school in 1995 and has 31 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Epic Group-emergency Physicians An Illinois Concern Sc, Aurora Emergency Physicians Llc and his current practice location is 150 W High St, Morris, Illinois. You can reach out to his office (for appointments etc.) via phone at (815) 942-2932.

Dr John Ellis Williamson Jr is licensed to practice in Illinois (license number 036-109152) 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 1629017108.

Contact Information

Dr John Ellis Williamson Jr, DO
150 W High St,
Morris, IL 60450-1463
(815) 942-2932
Not Available

Map and Direction




Physician's Profile

Full NameDr John Ellis Williamson Jr
GenderMale
SpecialityEmergency Medicine
Experience31 Years
Location150 W High St, Morris, Illinois
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:
  • Dr John Ellis Williamson Jr graduated from medical school in 1995
  NPI Data:
  • NPI Number: 1629017108
  • Provider Enumeration Date: 06/06/2006
  • Last Update Date: 09/27/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 7719950658
  • Enrollment ID: I20070713000171

Medical Identifiers

Medical identifiers for Dr John Ellis Williamson Jr such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1629017108NPI-NPPES
036109152-1MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine 036109152 (Illinois)Secondary
207PE0004XEmergency Medicine - Emergency Medical Services 036-109152 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Morris Hospital & Healthcare CentersMorris, ILHospital
Copley Memorial HospitalAurora, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Epic Group-emergency Physicians An Illinois Concern Sc03452128419
Aurora Emergency Physicians Llc185065718049

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. Dr John Ellis Williamson Jr allows following entities to bill medicare on his behalf.
Entity NameSarah Bush Lincoln Health Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1669564662
PECOS PAC ID: 5092614867
Enrollment ID: O20031231000478
Entity NameEpic Group-emergency Physicians An Illinois Concern Sc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1447283569
PECOS PAC ID: 0345212841
Enrollment ID: O20040806000102
Entity NameSouthern Illinois Medical Services Nfp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1770656837
PECOS PAC ID: 3678677390
Enrollment ID: O20070404000595
Entity NameAurora Emergency Physicians Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1407379423
PECOS PAC ID: 1850657180
Enrollment ID: O20171102000998

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. Dr John Ellis Williamson Jr 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
Dr John Ellis Williamson Jr, DO
10500 Deer Chase Ave,
Orland Park, IL 60467-9013

Ph: (708) 364-1253		Dr John Ellis Williamson Jr, DO
150 W High St,
Morris, IL 60450-1463

Ph: (815) 942-2932

Reviews and Comments


Emergency Medicine Doctors in Morris, IL

Deirdre Casagrande, APRN
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 100 Gore Rd, Morris, IL 60450
Phone: 815-364-8919    
Mark D Crockett, M.D.
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 150 W High St, Morris, IL 60450
Phone: 815-942-2932    
Mark Gibson, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 150 W High St, Morris, IL 60450
Phone: 815-942-2932    
Michael Kryza, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 150 W High St, Morris, IL 60450
Phone: 815-942-2932    
Patricia Panelli, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 100 Gore Rd, Morris, IL 60450
Phone: 815-364-8919    
Margaret B Bialas, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 100 Gore Rd, Morris, IL 60450
Phone: 815-364-8919    Fax: 815-941-4363

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.