Our Educators

Dr Brian JenkinsBrian Jenkins, MD, is the Founder and President of Doctors In Training.  A native Texan, he earned his BS in 1998 at the University of Texas at Austin and his MD in 2003 at The University of Texas Medical Branch at Galveston.   Dr Jenkins recognized the need for better study materials as a medical student and began developing a novel set of high-yield notes for medical students in 2000. Those notes developed into a Step 1 review course that began in 2002 with a class of 30 students.  The DIT Step 1 and Step 2 reviews are now global courses helping medical students in over 150 U.S. and 50 foreign medical schools.  Drawing from his own experiences as a medical student, resident, and practicing physician, he now works with the DIT team to develop DIT in new directions to continue to provide the highest-quality medical education resources. Dr Jenkins enjoys spending time with family, gardening, reading, and playing sports.


Michael McInnis, MD, is a physician educator at Doctors In Training. He studied chemistry as an undergraduate at Southern Methodist University in Dallas, and attended medical school at the University of Texas in Houston. He has over seven years of experience as a general internist in Arlington, Texas, specializing in the management of chronic disease, including diabetes, hypertension, hyperlipidemia and obesity.  He is married, and has 3 young children (all boys).  His interests include music (trombone, guitar, writing/arranging, and record-collecting), backpacking, cooking, and reading biographies.  Follow him on Twitter @DrMcInnisDIT.

Chris Lewis, MDChris Lewis, MD, is a chief educator at Doctors In Training.  He attained his medical doctorate at the University of Texas Medical Branch in Galveston, TX.  Today he maintains a busy Family Medicine practice in Round Rock, Texas.  He also enjoys cooking exotic gourmet food, video gaming and playing with his four above average children.  Dr. Lewis strives to infuse his lecturing with humor and excels at telling bad jokes. Follow him on [email protected].

Jennifer Shufford, MDJennifer Shuford, MD, is a guest educator at Doctors In Training.  She attended University of Texas Southwestern Medical School.  She completed her fellowship in Infectious Diseases at the Mayo Clinic and received her Master of Public Health degree from Harvard School of Public Health.  She is currently practicing infectious diseases in Austin, Texas, enjoying the year-round warm weather.  A few of her favorite things include: her husband Clark, her two beautiful kids, running, reading mystery books, and playing the string bass.

Mary Beth Cox_Head Shot

Mary Beth Cox, MD, is a guest educator at Doctors In Training. She earned her bachelor’s degrees in Genetics and Biochemistry from Texas A&M University. She became a Doctor of Medicine after studying at the University of Texas Health Science Center in Houston. She then moved to North Carolina for an Internal Medicine residency, followed by an Endocrinology fellowship and a Master’s in Health Sciences at Duke University Medical Center. She is currently working for an Endocrinology practice in Fort Worth, Texas. In her free time, she enjoys running, tennis, yoga, eating good food and playing outside with her geriatric dogs, sweet children and handsome husband (not necessarily in that order).

Dr E TajzoyEmil Tajzoy, MD, is a guest educator at Doctors In Training. A native Dallasite, he studied biology and film at Southern Methodist University. He stayed in town for medical school at UT Southwestern, and completed his OB/GYN residency at Parkland Hospital.  He then traveled 10 miles north to Presbyterian Hospital of Dallas for the Advanced Gynecologic Surgery fellowship. He has since joined a private practice in the area. He enjoys conducting a lecture series for soon to be new dads at Presbyterian. In his spare time, he likes playing tennis, attending plays and watching movies with his wife, Catherine, and hanging out with his cat Chappy.

Dr Cherilyn CecchiniCherilyn Cecchini, MD, is a guest educator at Doctors in Training. She studied biology and psychology at The Pennsylvania State University and attended medical school at Sidney Kimmel Medical College (formerly Jefferson Medical College) in Philadelphia, PA.  She is currently a third year pediatric resident at Children's National Medical Center in Washington, DC. She has been accepted to begin fellowship in pediatric hematology/oncology at St. Jude Children's Research Hospital this coming spring. She plans to focus on osteosarcoma in the adolescent and young adult population. In her free time, she enjoys soccer, boxing, running, reading, playing with her 4.5 lb dog, and socializing with friends and family. Follow her on Instagram.

DrfinkleaDavid Finklea, MD, is a physician educator at Doctors In Training. He earned his Bachelor of Science in 1999 at Centenary College in Shreveport, Louisiana. He attained his medical doctorate in 2004 from the University of Texas Medical Branch in Galveston. He is currently a Pulmonologist at UT Southwestern Medical Center.  His clinical interests include Pulmonology; specifically cystic fibrosis, general pulmonology, critical care medicine, transplantation and end of life care. In his free time, he enjoys baseball and attending church.