DR. WILLIAM JAMES POPOVIC MD
NPI 1609824549
Internal Medicine - Medical Oncology in Shiloh, IL

Active since May 04, 2006PECOS EnrolledAccepts Medicare Assignment
92.39/100
CMS Quality Rating
1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180, SHILOH, IL 62269(618) 607-1340(618) 622-9724 Get Directions Write a Review

NPPES record last updated: April 21, 2025. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Nov 8, 2023, Nov 15, 2021, Aug 26, 2020 and 1 more (4 updates tracked since 2019).

About Dr. William James Popovic Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM JAMES POPOVIC MD (NPI 1609824549) is an individual medical oncology provider in Shiloh, Illinois, licensed in Illinois (036060456) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Memorial Hospital, and is a graduate of Saint Louis University School Of Medicine (1971).

NPPES Registry Identity

NPI1609824549
Entity TypeIndividualMale
Primary Taxonomy207RX0202X
Provider Legal NameDR. WILLIAM JAMES POPOVICCredential: MD
Location Address1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180Shiloh, IL 62269-2914
Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (618) 607-1340 · Fax (618) 622-9724
Fax(618) 622-9724
Sole ProprietorNo
Medical School CMSSaint Louis University School Of MedicineGraduated 1971
Enumeration DateMay 4, 2006
Last NPPES UpdateApril 21, 20254 updates tracked since enumeration
NPI 1609824549 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License Licensed in IL · 036060456
Definition

An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.

Also ListedInternal MedicineTaxonomy 207R00000X · License 036060456 (IL)
1418 CROSS ST, Shiloh, IL 62269

Other Identifiers 1

Medicaid200058084MO

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. William James Popovic Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6406876622
PECOS Enrollment IDI20101103001175
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the 2024 & 2026 CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
64 services49 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
44 services34 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
24 services24 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
11 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Memorial Hospital

Acute Care Hospitals · Belleville, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140185
Location4500 Memorial DriveBelleville, IL 62226 · St. Clair County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 62269 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$173.35 typical visit price
range $56.28 – $173.35
Typical copayment $43.33 (range $14.07 – $43.33)
Most-billed visit code 99205
Established Patient
$99.71 typical visit price
range $17.51 – $139.99
Typical copayment $24.92 (range $4.37 – $34.99)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

92.39/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality97.81
Promoting Interoperability100
Improvement Activities40
Cost70.26

Other Providers at the Same Location NPPES 12

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Pharmacy (Community/Retail Pharmacy)
1418 CROSS ST
SHILOH, IL 62269
Urology
1418 CROSS ST, DIV SURG UROLOGY, STE 180
SHILOH, IL 62269
Internal Medicine (Medical Oncology)
1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180
SHILOH, IL 62269
Internal Medicine (Medical Oncology)
1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180
SHILOH, IL 62269
Internal Medicine (Medical Oncology)
1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180
SHILOH, IL 62269
Physician Assistant
1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180
SHILOH, IL 62269
Nurse Practitioner (Gerontology)
1418 CROSS ST, DIV IM MEDICAL ONCOLOGY, STE 180
SHILOH, IL 62269
Physician Assistant (Medical)
1418 CROSS ST, STE 160
SHILOH, IL 62269

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1609824549, enumerated as an "individual" on May 04, 2006.

The provider is located at 1418 CROSS ST DIV IM MEDICAL ONCOLOGY, STE 180 SHILOH, IL 62269 and the phone number is (618) 607-1340.

Internal Medicine with taxonomy code 207RX0202X and a focus in Medical Oncology.

The provider might be accepting Accepts: Cox HealthPlans, Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.

William Popovic is affiliated with: MEMORIAL HOSPITAL.