CDL-CME Instructors

Carla Huitt, MD, MPH


Dr. Huitt has a Bachelor’s in Biochemistry from the University of Wyoming; a Master’s in Biochemistry from the University of Idaho, a Master’s in Public Health from Johns Hopkins, and graduated from medical school at Creighton University in Omaha. She is board certified in Occupational and Environmental Medicine and as a Disability Analyst. She is also a Certified Medical Review Officer.

Dr. Huitt has experience in the clinical treatment and management of injured workers and managing an occupational medicine clinic. She was a Medical Director for a Blue Cross Blue Shield plan, a Medical Director for a State Medicaid Plan, and a Disability Specialist Consultant 2 for the Social Security Administration. Currently Dr. Huitt is the Medical Director for Montana Worker’s Compensation since July 2012.

In January 2006, Dr. Huitt was invited to serve as a content expert for the FMCSA work groups that delineated the tasks involved in performing CDL exams. She reviewed the initial CDL Medical Examiners training resources and pilot tested the initial questions written for the CDL Medical Examiners certification exam from 2006 through 2008.

Gladys E. Young, MD, Col USAF MC CFS (ret)

GladysYoungDr. Young is a retired USAF flight surgeon who has been teaching online classes since 1991. She received a Bachelor’s in biology from Midwestern State University in Wichita Falls, Texas and her MD from University of Texas Southwestern Medical School in Dallas. She entered the Air Force as a General Medical Office at Altus AFB, OK, but left active duty for the reserves to train as one of the first four women flight surgeons. She was the first woman to be assigned duty with fighter (F-105) aircraft. She returned to active duty and was one of the first two women to become a Chief Flight Surgeon. Some other assignments included being the first woman commander of a clinic in PACAF at Suwon AB, ROK, and Desert Storm deployment with the 1611th Aeromedical Evacuation Squadron, KKMC, Saudi Arabia. During Operation Restore Hope she served as commander of the 1610th Medical Squadron at Cairo West AB. While assigned at Malmstrom AFB, Montana, she was honored to be selected as a member of the Rescue Aircrew of the year for her work with the 40th Rescue Flight twice. She retired in 1997 with the rank of Colonel.

Dr. Young is now in family practice in Chester, Montana, where she also serves as FAA AME. She is the medical director of Liberty County Nursing Home and Liberty County EMS Services. She serves on the Hospital Governing Board and as Liberty County Public Health Officer. Since 1991 she has been teaching with Embry Riddle Aeronautic University through their Worldwide Online program and is an associate professor.

LeeAnna Irvine Muzquiz, MD

LeeAnnIrvineMuzquizDr. Muzquiz is a native Montanan and a graduate of Montana State University where she earned a Bachelor’s in Microbiology with a minor in Native American Studies. She graduated from the University of Washington School of Medicine in 2000 and completed her Family Medicine training at Swedish Family Medicine Residency, Providence Campus in 2003.

She is an enrolled member of the Confederated Salish and Kootenai Tribes (CSKT). Since finishing residency, Dr. Muzquiz has worked for the CSKT in the Tribal Health Department where she is now a Medical Director and full-time physician. Her interests in medicine include adolescent medicine, women’s health, and diabetes, as well as teaching and mentoring. She is active in health policy and advocacy.


Nicole Clark, MD

Neurology (Adult)
St. Peter’s Medical Group – Broadway
2550 Broadway Helena, MT 59601

Nicole Clark, MD, moved to Helena from Salt Lake City where she completed a fellowship in Clinical Neurophysiology/Neuromuscular Medicine at the University of Utah in 2009. She earned both her Medical Degree and a Bachelor of Science degree in biochemistry with honors at the University of Missouri-Columbia and completed both an internship and neurology residency at the University of Utah.

Dr. Clark is a member of the American Association of Neuromuscular and Electrodiagnostic Medicine, American Academy of Neurology, and American Medical Association.

Greg Vanichkachorn MD, MPH


  • Occupational Medicine
  • Subspecialty: Family Practice
  • Board Certification: American Board of Family Medicine
  • Medical School: Virginia Commonwealth University
  • Residency: St. Francis Medical Center
  • Occupational Health Services at The Summit, Kalispell, Montana

Dr. Greg Vanichkachorn is a family physician who serves as the Medical Director for Occupational Health Services, an occupational medicine clinic of Kalispell Regional Healthcare. The safe use of impairing medications and prevention of commercial driving injuries is his passion.