Current Fellows

Heng (Kim) He, M.D.

Dr. Kim He was born in China and emigrated to the United States when she was five years old. She attended The Ohio State University for her undergraduate studies and University of Cincinnati for medical school before deciding to trade midwest winters for sunny, balmy Januaries in Miami where she completed her anesthesiology residency. She has worked on numerous bench research projects, co-authored publications and presented at numerous academic conferences in basic as well as clinical sciences.

While Dr. He initially planned to practice as a general anesthesiologist, after graduating, and with some encouragement from her mentors and friends, she decided to further her training and pursue a fellowship in pediatric anesthesiology. Dr. He is passionate in advocating for patient safety and is excited for the opportunity to work with vulnerable patient populations.

In her free time, she has a myriad of hobbies and enjoys taking on new challenges. She is an avid reader, traveler, and rock climber. You will usually find her out and about looking for the next challenge or great adventure, on an airplane, or out and about with her close friends enjoying the weather in Miami.

Kristina Ruiz, M.D.

Kristina is a South Florida native, where she was born and raised. She attended Florida International University for her undergraduate degree in biology. She went on to West Virginia University where she received her medical degree. She was eager to return to Miami to pursue her anesthesia residency at Jackson Memorial Hospital for the wide case array and renowned clinical experience. During her residency she discovered her passion for working with children. The ability to serve as an advocate for this vulnerable patient population lead her to pursue a pediatric anesthesia fellowship here at JMH. She is excited to continue her medical education in her hometown where she can further serve her community. During her fellowship she hopes to focus on acute/regional pain management and medical education. Outside of work she enjoys spending time with her dog Bailey, playing pickleball, and spending time with friends and family.

Harshvardhan Rajen, M.D.

Dr. Harshvardhan Rajen was born and raised in Montréal, Canada. There, he received an undergraduate degree in Cell and Molecular Biology at Concordia University before pursuing medical school in the Caribbean on the island of St. Kitts. He completed Anesthesiology residency at HCA Florida Kendall Hospital here in Miami, and is excited for the opportunity to complete his Pediatric Anesthesiology Fellowship at the University of Miami. He is looking forward to finding his niche in pediatric anesthesia care and being an educator for future anesthesiology residents.

Growing up in Canada, Dr. Rajen is fluent in French and after being in Miami for 4 years is learning Spanish. He enjoys cooking and trying new cuisines and restaurants around South Florida. In addition to food, Dr. Rajen enjoys an active lifestyle, taking full advantage of the outdoors and weather of South Florida, including exploring the Everglades, the beaches and the Keys.

Stephanie Hernandez, M.D.

Stephanie was born and raised in South Florida until high school when she moved to northern VA. She missed the year round warm weather and sunshine though so she made her way back south for college and attended USF in Tampa and eventually continued further south to Miami where she completed medical school at FIU, and finally anesthesia residency at UM/JMH. She is eager to continue her training at UM/JMH for her pediatric anesthesia fellowship.

Outside of medicine she enjoys pilates and other group fitness classes, traveling, trying new restaurants, and boating!