Dr William James Popovic, MD - Medicare Internal Medicine in Shiloh, IL

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Dr William James Popovic, MD is a medicare enrolled "Internal Medicine - Medical Oncology" physician in Shiloh, Illinois. His current practice location is 1418 Cross St, Div Im Medical Oncology, Ste 180, Shiloh, Illinois. You can reach out to his office (for appointments etc.) via phone at (618) 607-1340.

Dr William James Popovic is licensed to practice in Illinois (license number 036060456) 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 1609824549.

Contact Information

Dr William James Popovic, MD
1418 Cross St, Div Im Medical Oncology, Ste 180,
Shiloh, IL 62269-2914
(618) 607-1340
(618) 622-9724

Map and Direction




Physician's Profile

Full NameDr William James Popovic
GenderMale
SpecialityInternal Medicine - Medical Oncology
Location1418 Cross St, Shiloh, Illinois
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1609824549
  • Provider Enumeration Date: 05/04/2006
  • Last Update Date: 11/08/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 6406876622
  • Enrollment ID: I20101103001175

Medical Identifiers

Medical identifiers for Dr William James Popovic such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1609824549NPI-NPPES
200058084MedicaidMO

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 036060456 (Illinois)Secondary
207RX0202XInternal Medicine - Medical Oncology 036060456 (Illinois)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. Dr William James Popovic allows following entities to bill medicare on his behalf.
Entity NameWashington University Physicians In Illinois, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1477076263
PECOS PAC ID: 4789945163
Enrollment ID: O20180227002018

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 William James Popovic 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 William James Popovic, MD
660 S Euclid Ave, Msc 8056-0910-01,
Saint Louis, MO 63110-1010

Ph: (618) 607-1365		Dr William James Popovic, MD
1418 Cross St, Div Im Medical Oncology, Ste 180,
Shiloh, IL 62269-2914

Ph: (618) 607-1340

Reviews and Comments


Internal Medicine Doctors in Shiloh, IL

Dr. Brett Howard Herzog, MD PHD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1418 Cross St, Div Im Medical Oncology, Ste 180, Shiloh, IL 62269
Phone: 618-607-1340    Fax: 618-622-9724
Dr. John L Visconti, DO
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1418 Cross St, Div Im Medical Oncology, Ste 180, Shiloh, IL 62269
Phone: 618-607-1340    Fax: 618-622-9724
Dr. Alfred O Greco, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1418 Cross St, Div Im Medical Oncology, Ste 180, Shiloh, IL 62269
Phone: 618-607-1340    Fax: 618-622-9724
Dr. Muhammad Farooq Asghar, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1404 Cross St Ste 2114, Shiloh, IL 62269
Phone: 618-233-2220    Fax: 618-233-2555
Dr. Laura Ann Crandall, D.O.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1167 Fortune Blvd, Shiloh, IL 62269
Phone: 618-207-6900    Fax: 618-207-6901
Jennifer Lynn Brenneman Neville, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1418 Cross St Ste 250, Shiloh, IL 62269
Phone: 618-236-8000    

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.