William T O'rourke, MD - Medicare Internal Medicine in Elmhurst, IL

William T O'rourke, MD is a medicare enrolled "Internal Medicine" physician in Elmhurst, Illinois. He went to Loyola University Of Chicago, Stritch School Of Medicine and graduated in 1995 and has 29 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Elmhurst Memorial Healthcare and his current practice location is 172 E Schiller St, Elmhurst, Illinois. You can reach out to his office (for appointments etc.) via phone at (331) 221-0000.

William T O'rourke is licensed to practice in Illinois (license number 036096382) 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 1013013119.

Contact Information

William T O'rourke, MD
172 E Schiller St,
Elmhurst, IL 60126
(331) 221-0000
(331) 221-2312

Map and Direction




Physician's Profile

Full NameWilliam T O'rourke
GenderMale
SpecialityInternal Medicine
Experience29 Years
Location172 E Schiller St, Elmhurst, 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:
  • William T O'rourke attended and graduated from Loyola University Of Chicago, Stritch School Of Medicine in 1995
  NPI Data:
  • NPI Number: 1013013119
  • Provider Enumeration Date: 09/15/2006
  • Last Update Date: 03/06/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 0941339501
  • Enrollment ID: I20100520000510

Medical Identifiers

Medical identifiers for William T O'rourke such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1013013119NPI-NPPES
36-096382MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 36-096382 (Illinois)Secondary
207R00000XInternal Medicine 036096382 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Residential Home HealthDowners grove, ILHome health agency
Elmhurst Memorial HospitalElmhurst, ILHospital
Edward HospitalNaperville, ILHospital
Central Dupage HospitalWinfield, ILHospital
Loyola University Medical CenterMaywood, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Elmhurst Memorial Healthcare9638168602182

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. William T O'rourke allows following entities to bill medicare on his behalf.
Entity NameElmhurst Memorial Healthcare
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1457493454
PECOS PAC ID: 9638168602
Enrollment ID: O20040506001298
Entity NameNorthshore University Healthsystem Faculty Practice Associates
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI 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. William T O'rourke 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
William T O'rourke, MD
172 E Schiller St,
Elmhurst, IL 60126

Ph: (331) 221-0000
William T O'rourke, MD
172 E Schiller St,
Elmhurst, IL 60126

Ph: (331) 221-0000

Reviews and Comments


Internal Medicine Doctors in Elmhurst, IL

Maelen M Pantano, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 172 Schiller St, Elmhurst, IL 60126
Phone: 331-221-9001    Fax: 331-221-2315
Ramier J Lehne,
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 1200 S York St Ste 2000, Elmhurst, IL 60126
Phone: 331-221-9199    
Barbara E Potaczek, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 155 E Brush Hill Rd, Elmhurst, IL 60126
Phone: 331-221-8952    Fax: 331-221-3782
Dr. Lalitha Dileep-ansal, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 155 E Brush Hill Rd, Elmhurst, IL 60126
Phone: 331-221-8952    Fax: 331-221-3782
Dr. Omar Shamsi, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1200 S York St, Suite 1240, Elmhurst, IL 60126
Phone: 331-221-6140    Fax: 331-221-3838
Dhara Naik, DO
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 172 E Schiller St, Elmhurst, IL 60126
Phone: 331-221-0000    Fax: 331-221-2312

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.