J. Robert "Bob" Kalsu

Hard work is part of my DNA. I put myself through law school at night while working full time. I am both an attorney and a business owner with over 30 years experience. I understand that business is not a 9-5 proposition, and that's why my clients know they can reach me whenever they need me.

Michael J. Heron is a Partner in our Oklahoma City office with over 30 years of legal experience. He specializes in protecting the rights of individuals and businesses in civil cases involving medical malpractice, professional liability, construction, transportation, and insurance matters. Mike represents hospitals, practice groups, physicians, nurses, and other health care professionals in a wide range of litigation, policies and procedures, compliance, investigations, business transactions,...

Mark E. Bialick entered the practice of law in 1981. His practice centers upon complex civil litigation, and, over the course of his nearly forty-year career, Mark has litigated and tried to verdict several of the State of Oklahoma’s seminal cases in the areas of insurance, particularly with respect to the duty of good faith and fair dealing, as well as cases involving catastrophic injuries and wrongful death. In 2006, Mark was inducted as a fellow in the American College of Trial Lawye...

Katherine Taylor Loy has practiced law since 1992 and concentrates on Insurance Law, Litigation, Personal Injury, and Products Liability. She has been admitted to practice in Oklahoma, the U.S. District Court, Eastern, Northern and Western Districts of Oklahoma, the U.S. Court of Appeals, Tenth Circuit, and the U.S. Supreme Court. Katherine belongs to the Oklahoma County and Oklahoma Bar Associations and earned her Juris Doctor from the University of Oklahoma. She graduated with honors as a m...

Courtney K. Warmington is an advisory director in Crowe & Dunlevy’s Labor and Employment Section. Since joining the group in 1999, Ms. Warmington has successfully represented management in cases brought by employees under Title VII of the Civil Rights Act, the Americans With Disabilities Act, the Age Discrimination in Employment Act, the Family and Medical Leave Act, Oklahoma’s Workers’ Compensation laws, and the Fair Labor Standards Act. In addition to her litigation pr...

Joseph P. Hogsett is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Real Estate and Real Estate Law. Joseph P., who practices law in Oklahoma City, Oklahoma, has been recognized since 2010. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Joseph P. is held by other top lawyers in the same geographic and legal practice area.

Jessica Hatcher is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law and Oil and Gas Law. Jessica, who practices law in Oklahoma City, Oklahoma, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jessica is held by other top lawyers in the same geographic and legal practice area.

Kirke Kickingbird is a top attorney recognized by Best Lawyers in the practice area(s) of Gaming Law and Native American Law. Kirke, who practices law in Oklahoma City, Oklahoma, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kirke is held by other top lawyers in the same geographic and legal practice area.

T. Scott Spradling is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Real Estate and Real Estate Law. T. Scott, who practices law in Oklahoma City, Oklahoma, has been recognized since 1983. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which T. Scott is held by other top lawyers in the same geographic and legal practice area.

Gary W. Derrick specializes in corporate and securities law, including mergers and acquisitions, ’34 Act reporting, private equity and debt financing, venture capital financing, business formation and restructuring, corporate governance, and general business contracts. His clients are in oil and gas, technology, hospitality, agriculture, manufacturing, retail and professional services.