Attorneys & Professionals

Civil Trial Law
Real Estate Law
Healthcare Reimbursement Law


H. Dan Johnston

Shareholder / Director

Place of Birth: Liberty, Texas

South Texas College of Law - J.D. 1988
University of Houston - B.S., 1985

Texas Bar Association
Houston Bar Association, Health Law Section
Texas Hospital Association (Firm), Health Law Section
State Bar of Texas, History & Traditions Committee (1990-2002)
Liberty County Bar Association
Director (1989-1998) and Lifetime Member, “H” Association, University of Houston
Sons of the Republic of Texas - Lifetime Member, and Officer Hugh B. Johnston Chapter 10
Healthcare Financial Management Association - Texas Gulf Coast Chapter
Texas Farm Bureau
Houston Livestock Show & Rodeo Lifetime Member - Wagon 7
Texas and Southwestern Cattle Raisers Association
Executive Committee and Chairman of the Board - Salt Grass Trail Association
American Quarter Horse Association, Lifetime Member
Palomino Horse Breeders of America, Lifetime Member
Trinity Valley Exposition Board of Directors

Professional Experience
‍‍In 1989, was admitted to practice in state and county courts for the entire State of Texas; also admitted to practice in the U.S. Federal District Courts for the Southern, Western and Eastern Districts of Texas. On April 15, 2013 was admitted and qualified as Attorney and Counselor of the Supreme Court of the United States.  Achieved highest rating in legal ability & ethical standards: AV™ Preeminent and Top Rated Lawyers™ in Health Care - Martindale - Hubbell®.  President, Shareholder and Director, Sullins & Johnston Attorneys At Law, P.C. Since 1986, Dan has been with the firm, where he began his professional career as a law clerk while attending South Texas College of Law. Dan's practice has involved representing individuals, corporations and other business entities, ranging from daily business advice to prosecution and defense of clients’ interests through trial and mediation in such matters as healthcare and subrogation reimbursement, commercial health insurance (contracted denials), consumer transactions, and business disputes. His practice has focused in the areas of emergency medical services, healthcare reimbursement, subrogation, and commercial litigation, with an emphasis on business-related solutions, litigation and defense in those areas.


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