Chicago 525 West Monroe Street Chicago, Illinois 60661-3693 p_ 312.902.5634    f_ 312.577.8945

Michael R. Callahan concentrates his practice in health care, assisting hospital and health system clients on a variety of health care legal issues including health care antitrust, health care and HIPAA regulatory compliance, accreditation matters and general corporate, medical staff credentialing, hospital/medical staff relations, and mergers and acquisitions. He leads the Firm’s HIPAA and Corporate Compliance Group.

Mr. Callahan is recognized for his experience and knowledge of the health care industry. He is a frequent speaker on topics including, integrated delivery systems, hospital/physician joint ventures, physician recruitment and retention, medical staff matters, Joint Commission and HFAP accreditation, Medicare fraud and abuse and HIPAA. He has presented around the country before organizations such as the American Health Lawyers Association, the American Academy of Hospital Attorneys, the American Medical Association, the American Hospital Association, the American Bar Association, the American College of Healthcare Executives, and the National Association of Medical Staff Services. Mr. Callahan has been recognized by his peers for his legal acumen, and has been listed as an Illinois Leading Lawyer in Antitrust; as an Illinois Super Lawyer for Health Care (2007-2008); in Best Lawyers in America (1991-2008); in Corporate Counsel; in Marquis Who’s Who in American Law; and in Chambers USA: America’s Leading Lawyers for Business (2005-2008). In addition, he has an AV Peer Review Rating by LexisNexis Martindale-Hubbell. He is also the recipient of the 1995 Illinois Association Medical Staff Services Leadership Award.

Mr. Callahan is President of the Board of Directors for Northlight Theatre and a member of the Illinois Association of Healthcare Attorneys. He has served in positions as Chairman of the Health and Hospital Committee of the Chicago Bar Association, the Board of the Illinois Association of Health Care Attorneys, and as Co-Editor of the Antitrust Health Care Chronicle, an antitrust health care publication for the Section of Antitrust Law of the American Bar Association. Mr. Callahan has been a past member of the Steering Committee of the Hospital and Physicians Relations Committee of the American Academy of Hospital Attorneys (AAHA) and Chairperson of its Joint Venture Task Force, as well as two separate Task Forces of the AAHA and the Section of Antitrust Law of the American Bar Association examining the Health Care Quality Improvement Act. He served on the DePaul College of Law Alumni Board and is also an Adjunct Professor in DePaul's Masters in Health Law Program where he teaches a course on managed care.

Mr. Callahan received his B.A. from Northern Illinois University (1975), and earned his J.D. from DePaul University College of Law (1979) where he served as an editor on the Law Review board. After graduation, he served as a law clerk to Justice Daniel P. Ward on the Illinois Supreme Court. Mr. Callahan is admitted to practice in Illinois (1979) and before the U.S. Court of Appeals, 7th Circuit, and the U.S. District Court, Northern District of Illinois.

 Partner Michael Callahan Quoted in Medical Staff Briefing on Exclusive Contracts

 Katten Lands 14 Practices and 32 Attorneys in Chambers USA Guide

 Kadlec Reversed: How to Collect and Share Credentialing Data While Avoiding Legal Risk

More