Atty. W. Mark Sickles

Atty. W. Mark Sickles

W. Mark Sickles is a lawyer practicing defense litigation, medical malpractice, health care and 3 other areas of law.

Chicago Chicago 35 yrs experience 35 year
Call (224) 561-4433 Book Appointment

Profile Summary

About W. Mark Sickles at a glance

W. Mark Sickles is a Member based in Chicago, Illinois, practicing at Sudekum, Cassidy & Shulruff Chartered. They have 35+ years of legal experience, licensed to practice since 1991. Their practice focuses on medical malpractice, criminal defense, construction, litigation, and health care. Admitted to practice in Illinois (1991). Educated at John Marshall Law School (J.D., 1991). Recognitions include BV Distinguished. Active member of American Bar Association Defense Research Institute Illinois Defense Trial Counsel. Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • W. Mark Sickles is a lawyer practicing defense litigation, medical malpractice, health care and 3 other areas of law
  • W. Mark has been licensed for 35 years
  • W. Mark practices at Sudekum, Cassidy & Shulruff Chartered in Chicago, IL

Practice Areas Explained

W. Mark Sickles's Areas of Practice

Each practice area below reflects the types of cases W. Mark Sickles handles, with a brief overview of what that area of law covers.

Medical Malpractice

Medical malpractice lawyers represent patients harmed by negligent doctors, hospitals, and other providers. Free case review, no fee unless you win.

W. Mark Sickles is one of 49,086 medical malpractice attorneys indexed nationally. Browse medical malpractice attorneys in Illinois →

Criminal Defense

A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.

W. Mark Sickles is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in Illinois →

Construction Law

W. Mark Sickles is one of 40,689 construction attorneys indexed nationally. Browse construction attorneys in Illinois →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

W. Mark Sickles is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Illinois →

Health Care Law

Health care attorneys for HIPAA, Medicare, Medicaid, regulatory compliance, and medical licensing matters.

W. Mark Sickles is one of 66,735 health care attorneys indexed nationally. Browse health care attorneys in Illinois →

Jurisdictional Context

Why local counsel matters in Illinois

Practicing law in Illinois. Legal matters in Illinois are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Chicago are typically filed in the local municipal court or the appropriate Illinois state district court, depending on subject matter and amount in controversy. An attorney licensed in Illinois brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Illinois courts without local counsel or pro hac vice admission.

Looking for additional Illinois attorneys? Browse all attorneys in Chicago or all attorneys in Illinois.

Frequently Asked

Common questions about W. Mark Sickles

Where is W. Mark Sickles's law office located?
W. Mark Sickles's law practice is located in Chicago, Illinois. The firm is Sudekum, Cassidy & Shulruff Chartered. You can contact the office directly through this profile page.
What practice areas does W. Mark Sickles handle?
W. Mark Sickles focuses on medical malpractice, criminal defense, construction, litigation, health care. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has W. Mark Sickles practiced law?
W. Mark Sickles has 35+ years of legal experience and has been licensed since 1991.
Where did W. Mark Sickles go to law school?
W. Mark Sickles earned their education at (J.D., 1991).
How can I contact W. Mark Sickles for a consultation?
You can contact W. Mark Sickles directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has W. Mark Sickles received?
W. Mark Sickles's notable recognition includes: BV Distinguished.

Education

J.D.
John Marshall Law School
- 1991

Awards

BV Distinguished

Bar Admissions

Illinois
Admitted: 1991

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