About Us

Dr. Christopher John is a board-certified pulmonologist with over 40 years of experience. He has diagnosed or treated asbestos-related diseases in tens of thousands of people over his career. He is one of less than 200 doctors in the United States who have been certified by NIOSH to diagnose asbestos-related illnesses.

Dr. John is the medical director for the Asbestos Health Line, and he ensures that every one of our clients receive excellent medical service. Dr. John is based primarily out of his office in Little Rock, Arkansas, but spends time every month in one of Asbestos Health Line’s offices in Texas or Louisiana.

Dr. John was born in Wales, Dr. John emigrated to the United States by way of South Africa and Canada. Perhaps not coincidentally, South Africa and Canada are two countries with a rich history of mining asbestos.

In his spare time, Dr. John is an avid outdoorsman and enjoys spending time hunting and fishing with his family.

Kenneth Terrell, M.D. is Board Certified in Pulmonary Medicine with 39 years experience including over eight years experience working with asbestos-related illness.

Dr. Terrell grew up in the Beaumont, TX area and went to Lamar Univeristy on a track scholarship. He went onto the University of Texas in San Antonio where he studied pulmonary medicine. Growing up in the Beaumont area and having studied pulmonary medicine around the time that information about asbestos was coming to light, Dr. Terrell is uniquely familiar with asbestos and its impact on people and their communities.

In his spare time, Dr. Terrell enjoys fly fishing and target shooting.

Mark Mullinax, R.N., is the President of the Asbestos Health Line. He came to this position after spending many years in the hospice community, first as a nurse, and eventually in a number of executive positions.

Throughout his time in hospice, Mark saw first-hand how devastating the illnesses associated with exposure to asbestos can be. “Until you’ve seen it, you cannot really understand how terrible the diseases asbestos can cause actually are,” says Mark.

One of the reasons Mark joined Asbestos Health Line is that it gave him the opportunity to once-again interact with patients as a nurse. Mark personally meets with the vast majority of Asbestos Health Line’s clients and sets the standard of caring professionalism that all Asbestos Health Line employees follow.

Mark is an avid fisherman, and one of his favorite perks of this job is having our clients share the location of their favorite fishing holes.

Drew has served the CFO of the Asbestos Healthline since 2016. He has previously worked in finance in several different industries including healthcare. Drew is passionate about helping people and often participates in client events.

He is a former infantry officer in the US Army’s 4th Infantry Division, and served two combat tours in Iraq. He is an MBA and Six Sigma Black belt. He is also an Ironman triathlete and avid marathoner.

Leendert “Lane” Keus is a Registered Pulmonary Function Test technician who performs pulmonary function tests on Asbestos Health Line’s clients. Lane is the manager of the entire pulmonary function laboratory for a major hospital.

Lane ensures that all of our clients receive the same caliber of pulmonary function tests at Asbestos Health Line as they would at a top hospital. “The pulmonary function machines I use are top-of-the-line and cost close to $30,000 dollars. I was impressed that Asbestos Health Line invested in two of these machines instead of the less-accurate $1,500 dollar hand-held machines that some offices use,” says Lane.

Lane is a tremendous asset to the Asbestos Health Line team and truly enjoys working with our clients to get a true picture of their lung health.