Atty. Mark S O'Connor

Atty. Mark S O'Connor

Mr. Mark S O'Connor is a lawyer practicing trial practice section, injury & wrongful death, insurance and 4 other areas of law.

Phoenix Phoenix 40 yrs experience 40 year
Call (657) 600-3521 Book Appointment

Profile Summary

About Mark S O'Connor at a glance

Mark S O'Connor is a Shareholder based in Phoenix, Arizona, practicing at Beus Gilbert Mcgroder Pllc. They have 40+ years of legal experience, licensed to practice since 1986. Their practice focuses on medical malpractice, wrongful death, personal injury, litigation, and insurance. Admitted to practice in Arizona (1986) and U.S. District Court, District of Arizona (1986). Educated at John Marshall Law School (J.D., 1986) and Northern Arizona University (B.S., 1977). Recognitions include AV Preeminent. Serands clients in Phoenix, AZ and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr. Mark S O'Connor is a lawyer practicing trial practice section, injury & wrongful death, insurance and 4 other areas of law
  • Mark received a B.S. degree from Northern Arizona University in 1977, and has been licensed for 40 years
  • Mark practices at Beus Gilbert McGroder PLLC in Phoenix, AZ

Practice Areas Explained

Mark S O'Connor's Areas of Practice

Each practice area below reflects the types of cases Mark S O'Connor 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.

Mark S O'Connor is one of 49,086 medical malpractice attorneys indexed nationally. Browse medical malpractice attorneys in Arizona →

Wrongful Death

Mark S O'Connor is one of 31,253 wrongful death attorneys indexed nationally. Browse wrongful death attorneys in Arizona →

Personal Injury

Personal injury attorneys help accident victims recover compensation for medical bills, lost wages, and pain & suffering. Most work on contingency — no fee unless you win.

Mark S O'Connor is one of 264,852 personal injury attorneys indexed nationally. Browse personal injury attorneys in Arizona →

Civil Litigation

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

Mark S O'Connor is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Arizona →

Insurance Law

Insurance attorneys for coverage disputes, bad faith claims, denied claims, and policy disputes.

Mark S O'Connor is one of 121,912 insurance attorneys indexed nationally. Browse insurance attorneys in Arizona →

Jurisdictional Context

Why local counsel matters in Arizona

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

Looking for additional Arizona attorneys? Browse all attorneys in Phoenix or all attorneys in Arizona.

Frequently Asked

Common questions about Mark S O'Connor

Where is Mark S O'Connor's law office located?
Mark S O'Connor's law practice is located in Phoenix, Arizona. The firm is Beus Gilbert Mcgroder Pllc. You can contact the office directly through this profile page.
What practice areas does Mark S O'Connor handle?
Mark S O'Connor focuses on medical malpractice, wrongful death, personal injury, litigation, insurance. Each practice area listed reflects experience handling cases of that type in Arizona.
How long has Mark S O'Connor practiced law?
Mark S O'Connor has 40+ years of legal experience and has been licensed since 1986.
Where did Mark S O'Connor go to law school?
Mark S O'Connor earned their education at (J.D., 1986); (B.S., 1977).
How can I contact Mark S O'Connor for a consultation?
You can contact Mark S O'Connor 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 S O'Connor received?
Mark S O'Connor's notable recognition includes: AV Preeminent.

Education

J.D.
John Marshall Law School
- 1986
B.S.
Northern Arizona University
- 1977

Awards

AV Preeminent

Bar Admissions

Arizona
Admitted: 1986
U.S. District Court, District of Arizona
Admitted: 1986

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