Jeffrey J. Tomaszewski
Expertise in
4
conditions

Dr. Jeffrey J. Tomaszewski

Internal Medicine
150 E. Willow Ave., 
Wheaton, IL 
Offers Telehealth
Expertise in
4
conditions
150 E. Willow Ave., 
Wheaton, IL 

Overview

To provide compassionate care.

Dr. Tomaszewski is highly rated in 4 conditions, according to our data. His clinical expertise encompasses Renal Cell Carcinoma (RCC), Type 2 Diabetes (T2D), Muscle Invasive Bladder Cancer, Nephrectomy, and Prostatectomy.

Dr. Tomaszewski is board certified in Internal Medicine — Internal Medicine, American Board Of Internal Medicine, and Internal Medicine. He is actively involved in clinical research, co-authoring 65 peer reviewed articles.

Specialties

Internal Medicine

Licenses

Internal Medicine in IL

Board Certifications

Internal Medicine — Internal Medicine
American Board Of Internal Medicine
Internal Medicine

Hospital Affiliations

Edward Hospital
Northwestern Medicine Central DuPage Hospital

Languages Spoken

English

Gender

Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem BCBS
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
Blue Shield of California
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
CareFirst
  • HMO
  • POS
  • PPO
Change Healthcare
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
Cigna
  • EPO
  • HMO
  • PPO
Health Care Services Corporation
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Highmark
  • EPO
  • HMO
  • PPO
Horizon Healthcare
  • EPO
  • POS
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Independent Health
  • EPO
  • POS
  • PPO
Kaiser Permanente
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER MEDICARE
  • POS
  • PPO
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medica
  • EPO
  • HMO
  • PPO
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
Meridian Choice
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
MetLife
  • PPO
Northern Plains Alliance
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE PDP
Premera Blue Cross
  • INSURANCE PLAN
  • MEDICARE MAPD
  • OTHER COMMERCIAL
  • PPO
TeamCare
  • OTHER COMMERCIAL
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Walgreens
  • MEDICARE DISCOUNT CARD
  • MEDICARE PDP
  • OTHER MEDICARE
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 19 Less Insurance Carriers -

Locations

150 E. Willow Ave., Wheaton, IL 60187

Additional Areas of Focus

Dr. Tomaszewski has provided the following conditions as areas of focus. Please note that we may not have enough data to validate their experience in some of these conditions.

Asthma

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.

65 Total Publications

Adult Granulosa Cell Tumor With Low-Level Amplifications of JAK2, ERBB3, CDK4, and MDM2: A Rare Testicular Tumor.
Adult Granulosa Cell Tumor With Low-Level Amplifications of JAK2, ERBB3, CDK4, and MDM2: A Rare Testicular Tumor.
Journal: Case reports in urology
Published: June 12, 2025
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Frequently Asked Questions about Dr. Jeffrey J. Tomaszewski

How do I make an appointment with Dr. Jeffrey J. Tomaszewski?

You can book an appointment with Dr. Jeffrey J. Tomaszewski by calling their office at 630-665-6200. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.

Is Dr. Jeffrey J. Tomaszewski a top-rated expert for Nephrectomy?

MediFind is an objective health platform that identifies experts based on real-world data. Dr. Jeffrey J. Tomaszewski is classified as an Advanced expert for Nephrectomy, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.

What conditions does Dr. Jeffrey J. Tomaszewski specialize in?

While Dr. Jeffrey J. Tomaszewski is a Internal Medicine, they have specific expertise in Nephrectomy, Prostatectomy, and Renal Cell Carcinoma (RCC). MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Internal Medicine.

Does Dr. Jeffrey J. Tomaszewski participate in research or clinical trials?

Yes. Dr. Jeffrey J. Tomaszewski has published 65 articles and abstracts on conditions like Nephrectomy. You can view a list of Dr. Jeffrey J. Tomaszewski's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.

Does Dr. Jeffrey J. Tomaszewski accept my insurance?

Dr. Jeffrey J. Tomaszewski accepts most major insurance plans, including Aetna and Anthem BCBS. We recommend calling the office directly at 630-665-6200 to verify that your specific plan is currently accepted before your visit.

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

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