Atty. Mark Diehl Sullivan

Atty. Mark Diehl Sullivan

Mr. Mark Diehl Sullivan is a lawyer practicing rico, arbitration, land use & zoning and 5 other areas of law.

Wilson Wilson 28 yrs experience 28 year
Call (480) 939-5734 Book Appointment

Profile Summary

About Mark Diehl Sullivan at a glance

Mark Diehl Sullivan is a Member based in Wilson, Wyoming, practicing at Mark D. Sullivan, PC. They have 28+ years of legal experience, licensed to practice since 1998. Their practice focuses on car accidents, formation, workers comp, federal crimes, and zoning. Admitted to practice in New York (1998) and Wyoming (2005). Educated at Pace University (J.D., 1999) and Kenyon College (B.A., 1993). Recognitions include Peer Reviewed. Serands clients in Wilson, WY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr. Mark Diehl Sullivan is a lawyer practicing rico, arbitration, land use & zoning and 5 other areas of law
  • Mark received a B.A. degree from Kenyon College in 1993, and has been licensed for 28 years
  • Mark practices at Mark D. Sullivan, PC in Wilson, WY

Practice Areas Explained

Mark Diehl Sullivan's Areas of Practice

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

Car Accidents

Hurt in a car crash? Car accident lawyers fight insurance companies for fair compensation — free consult, no fee unless you win.

Mark Diehl Sullivan is one of 36,807 car accidents attorneys indexed nationally. Browse car accidents attorneys in Wyoming →

Business Formation

Mark Diehl Sullivan is one of 35,584 formation attorneys indexed nationally. Browse formation attorneys in Wyoming →

Workers Compensation

Workers compensation lawyers help injured workers get medical care, lost wages, and disability benefits. Free consult, no fee unless you win.

Mark Diehl Sullivan is one of 55,389 workers comp attorneys indexed nationally. Browse workers comp attorneys in Wyoming →

Federal Crimes

Mark Diehl Sullivan is one of 6,773 federal crimes attorneys indexed nationally. Browse federal crimes attorneys in Wyoming →

Land Use & Zoning

Mark Diehl Sullivan is one of 40,226 zoning attorneys indexed nationally. Browse zoning attorneys in Wyoming →

Jurisdictional Context

Why local counsel matters in Wyoming

Practicing law in Wyoming. Legal matters in Wyoming are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Wilson are typically filed in the local municipal court or the appropriate Wyoming state district court, depending on subject matter and amount in controversy. An attorney licensed in Wyoming 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 Wyoming courts without local counsel or pro hac vice admission.

Looking for additional Wyoming attorneys? Browse all attorneys in Wilson or all attorneys in Wyoming.

Frequently Asked

Common questions about Mark Diehl Sullivan

Where is Mark Diehl Sullivan's law office located?
Mark Diehl Sullivan's law practice is located in Wilson, Wyoming. The firm is Mark D. Sullivan, PC. You can contact the office directly through this profile page.
What practice areas does Mark Diehl Sullivan handle?
Mark Diehl Sullivan focuses on car accidents, formation, workers comp, federal crimes, zoning. Each practice area listed reflects experience handling cases of that type in Wyoming.
How long has Mark Diehl Sullivan practiced law?
Mark Diehl Sullivan has 28+ years of legal experience and has been licensed since 1998.
Where did Mark Diehl Sullivan go to law school?
Mark Diehl Sullivan earned their education at (J.D., 1999); (B.A., 1993).
How can I contact Mark Diehl Sullivan for a consultation?
You can contact Mark Diehl Sullivan 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 Mark Diehl Sullivan received?
Mark Diehl Sullivan's notable recognition includes: Peer Reviewed.

Education

J.D.
Pace University
- 1999
B.A.
Kenyon College
- 1993

Awards

Peer Reviewed

Bar Admissions

New York
Admitted: 1998
Wyoming
Admitted: 2005

Reviews

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8 Review
5 0
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