“One of my guiding leadership and life principles is COMPASSION, which enfolds the word ‘passion’ within its meaning. Compassion for others drives me to constantly strive to eliminate human suffering and to improve the health and well-being of our patients.”

Dr. Mark Calarco has served as the national medical director for American Addiction Centers (AAC) from 2013 – 2018. With the addition of Dr. Lawrence Weinstein, who assumed that position in August 2018, he has been appointed national medical director for clinical diagnostics. In this position, he works closely with Addiction Labs to conduct medical and laboratory research as well as develop innovative products and services that will improve patient outcomes. Calarco brings more than 25 years of experience to the role, including a background in family and emergency medicine.

As a child, Calarco developed an interest in health care and a passion for helping others after losing his brother due to a medical error. He went on to attend medical school and to become a family physician. Today, his commitment to clinical excellence and serving those in need has never been stronger as he leads a team of providers who are transforming lives every day.

Calarco is also a thought leader in the addiction industry and an established researcher. In 2017, he led two original studies at AAC with the findings presented to the American Academy of Addiction Psychology. His talents also include speaking five languages – Spanish, French, German, Japanese and Italian.

Career Highlights

  • Board member, TN State Medical Laboratory Board – Governor Appointed (2014 – 2020)
  • Medical staff, Dept. of Family & Emergency Medicine, HCA – Centennial Medical Ctr. (Current)
  • Adjunct clinical professor, Lincoln Memorial University – DeBusk College of Medicine (Current)
  • Clinical medical faculty, Midwestern University School of Medicine (2004)

Featured In


  • Narcan – the CPR of a New Generation: Med City News
  • Does Depression Turn Self-Medication into Addiction?: Psych Central
  • What Happens to the Body During an Overdose: Las Vegas Sun
  • 4 Solutions to Sustain Opioid Addiction Recovery: Conscious Life News
  • Is Our Perspective on Opioid Addiction Wrong?: Observer
  • Is Pharmacogenetics the New Standard of Healthcare?: Hub Pages
  • Addiction and Relapse – Are Hormones to Blame?: Renew Everyday

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