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Baum O'Connor Cullen Chmiel
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The Best Offense...

Baum O’Connor Cullen Chmiel is known for our superior track record of innovative defense strategies and winning outcomes for our clients.

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The Best Offense is a Strong Defense…That’s what our clients get at Baum O’Connor Cullen Chmiel

We focus on the defense of healthcare professionals, especially in the areas of malpractice defense and nursing home litigation. Over time, we have honed our reputation for razor-sharp trial preparation, innovative strategies and courtroom performance.

Like the fearsome rhinoceros, Baum O’Connor Cullen Chmiel is viewed as a formidable opponent. We chose the rhino as a symbol to represent the strong and straightforward defense we deliver for all our clients.

Risk Management and ADR Services

Risk Management and ADR Services

Insurance Coverage Litigation

Insurance Coverage Litigation

Professional Contract Litigation and Negotiation

Professional Contract Litigation and Negotiation

Administrative and Credentialing Representation

Administrative and Credentialing Representation

Hospital and Nursing Home Litigation

Hospital and Nursing Home Litigation

Medical Malpractice Defense

Medical Malpractice Defense

Testimonials

My faith in medicine and everything I do on a daily basis as a doctor that I have been trained for has been restored.  Thanks, Mimi.

Thank you from the bottom of my heart for your knowledge and excellent defense of me and my case over the past two weeks.  You have walked me through every step over the last 4 years of this case and I appreciate it so much.  Your confidence in me as a witness helped me so much on the stand.  I gained a new respect for your field and for you as you put in very long hours to defend me.  I am so grateful!

“I need not tell you that a medical malpractice case is an emotionally draining experience for the physician. During the case, one cannot help but question his or her moral fiber, judgment and medical confidence. Throughout the case, attorney Baum handled the defense masterfully.”

“I believe [our defense verdict] is no small part due to the high degree of skill and professionalism exhibited by you. … We also appreciate your sensitivity in dealing with our emotional involvement in the case. You never treated that lightly or in any way made us feel that that was inappropriate.”

“Reflecting on the trial and the months leading up to it, you were compassionate and brought a wealth of experience to the defense. … In short, were I given the opportunity to handpick my defense attorney, I could have done no better than you. Thank you.”

“I believe Mr. Baum’s attention to detail, thorough preparation, skillful courtroom approach, professional demeanor, and sincere commitment to representing our interests were instrumental in the plaintiff’s decision to withdraw the case during the first day of testimony.”

MORE TESTIMONIALS

News & Results

Matis Baum O’Connor Changes Name To Baum O’Connor Cullen Chmiel

Matis Baum O’Connor Changes Name To Baum O’Connor Cullen Chmiel

2 Minutes
MBO announced today its plan to rename the firm to Baum O'Connor Cullen Chmiel to reflect the long-standing leadership status of Mimi Cullen and David Chmiel.
26 Aug 2026

2027 Ones to Watch

Erik R. Bennett and Frank X. Petrini were recognized in the 2027 edition of Best Lawyers: Ones to Watch® in America.  This recognition is awarded to attorneys who have demonstrated...
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Awards
26 Aug 2026

2027 Best Lawyers

M. Brian O’Connor, Marian P. Cullen, David M. Chmiel, Cassidy L. Neal and R. Kent Hornbrook have been recognized by The Best Lawyers in America® for 2027. Being recognized by...
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Awards
16 Jan 2025

Baum O’Connor Cullen Chmiel announces First Female Managing Shareholder

PITTSBURGH, PA – January 1, 2025 – Baum O’Connor Cullen Chmiel, a leading Pittsburgh-based medical malpractice defense law firm, announced that Marian (“Mimi”) P. Cullen assumed the leadership role of...
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Events
21 Sep 2023

2024 Best Lawyers

Congratulations to Alan S. Baum, M. Brian O’Connor, Marian P. Cullen, David M. Chmiel, Cassidy L. Neal and R. Kent Hornbrook for being recognized as the Best Lawyers in America...
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Awards
Best Lawyers - Firm Logo
  • Attorneys
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    • Why a Rhino?
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