Gaurang Gupte, MD

Gaurang Gupte, MD

Resident Physician, Class of 2026

Department of Anesthesiology Featured Member: June 2025

Dr. Gupte is a rising CA-3 anesthesiology resident from Fort Worth, Texas. He earned dual degrees in biology and electrical engineering from the University of Texas at Arlington and completed his medical education at Washington University School of Medicine in St. Louis. Drawn to the program’s exceptional training and robust clinical opportunities, he chose to stay at WashU for his residency.

Gaurang leverages his background to explore the neural mechanisms of anesthesia-induced unconsciousness through research. His clinical interests include trauma anesthesia, prehospital medicine, and critical care.

Outside of the hospital, Gaurang enjoys running, hiking, and motorsports. He has a strong interest in rural medicine and aspires to one day have a hobby farm. Inspired by the late Irish anesthesiologist Dr. John Hinds, he hopes to use his passion for prehospital care to serve his community and support high-risk international motorsport events.

Teresa Hammann, MSN, APRN, AGACNP-BC

Teresa Hammann, MSN, APRN, AGACNP-BC

Nurse Practitioner

Department of Anesthesiology – APP of the Quarter: April 2021

Teresa was born and raised in St. Louis, MO and joined the department in 2016 after graduating from the ACNP program at Saint Louis University. Prior to becoming a nurse practitioner, she was a bedside nurse in the emergency department and cardiothoracic ICU at Barnes-Jewish Hospital. Outside of work, Teresa enjoys spending time with her husband Brett and their boxer, Shirley. She also enjoys travelling, cooking, SCUBA diving, reading, and spending time outdoors running, hiking, kayaking, camping, and gardening

"I feel blessed to have been chosen to be part of the SICU APP group as my first job out of school. I enjoy the fast paced environment and have an amazing group of co-workers that have helped me learn and grow in my profession!"

Teresa was named the Q1 2021 APP of the Quarter! She is always attentive to the staff and patient needs and is a great resource to have on our care team! Congratulations, Teresa!

Mark Hanak, MD

Mark Hanak, MD

Resident Physician, Class of 2023

Department of Anesthesiology Featured Member: February 2021

Mark is one of the current CA-1 residents in the Department of Anesthesiology. Originally from the Washington D.C. suburbs, he attended the University of Virginia for both undergrad and medical school. Following graduation he moved to St. Louis with his girlfriend, Alison, who is an OBGYN resident here at WashU.

When choosing a residency, he was drawn to the department’s diverse faculty and clinical opportunities. “I wanted to be able to learn from not just the national but also international leaders in the field. There are many ways to approach anesthetic management and getting to train here broadens one’s perspective.”

Outside of the hospital, Mark enjoys running, snowboarding, cooking, attending concerts (pre-COVID), and spending time with Alison and his 1 year old Pyrenees/Shepherd mix, Osley. They recently moved into a house and Mark is excited to start up a home garden this Spring.

Jon Harper, MD

Jon Harper, MD

Resident Physician, Class of 2027

Department of Anesthesiology Featured Member: September 2024

Jon is a first-year resident in the Department of Anesthesiology. He was born in North Jersey and raised in Salt Lake City where he grew up playing in the Wasatch mountains. He completed his undergraduate and medical education at the University of Utah before moving to St. Louis for residency with his wife, Alex, and their English Bulldog, Rosie. Jon and Alex enjoy so much of what St. Louis has to offer, including the fantastic food scene, historic architecture, charming neighborhoods, and Forest Park. When not in the hospital, Jon likes spending time with Alex, playing tug o’ war with Rosie, riding his bike, reading fiction, and baking bread.

Taylor Hathaway, MD

Taylor Hathaway, MD

Resident Physician

Department of Anesthesiology Featured Member: January 2026

Taylor Hathaway is a CA-2 resident in the Department of Anesthesiology at WashU Medicine. Born and raised in the Midwest, he received a Bachelor of Science in Microbiology at Brigham Young University and attended medical school back home at Indiana University. He and his wife, Jenny, have three young children ages 6, 4, and 18 months, and another is on the way — due summer 2026! He plans on staying in St Louis after residency and working as a general anesthesiologist.

Outside of work, Taylor enjoys soccer and baseball, and often sports a Cincinnati Reds baseball scrub cap at work. He recently ran his first (and probably only) half-marathon and marathon this last year thanks to a challenge from another co-resident, Peter Wittl. In his free time (limited as it is), he enjoys reading epic fantasy fiction or sci-fi and is always open to new book recommendations.

Mike Havenar, ACNP

Mike Havenar, ACNP

Nurse Practitioner

Department of Anesthesiology Featured Member: June 2020

Mike is the Compliance and Outreach Lead Nurse Practitioner with the Critical Care Division of the Department of Anesthesiology, and he has been with the department for 11 years. He was born and raised in central Illinois but moved to the St. Louis area for college and completed his undergraduate training at Southern Illinois University Edwardsville and graduate training at Saint Louis University. Before going to grad school, Mike was a travel nurse for three years and lived in Arizona, South Florida, and Southern California. Outside of work, Mike has a passion for international travel, SCUBA diving, hiking, cooking, and spending time with family, friends, and his dog, Leo.

Mallory Hawksworth, MD

Mallory Hawksworth, MD

Resident Physician, Class of 2024

Department of Anesthesiology Featured Member: November 2022

Mallory is a CA-2 resident in the anesthesia department. As a resident, every day is different. She can be found in the ORs of one of the PODs, in the cardiothoracic or surgical ICUs, in the pain clinic, or on the labor and delivery floor of at Saint Louis Children’s Hospital. Wherever she is assigned, she can be found learning any one of the many aspects of anesthesia from the amazing faculty, fellows, and co-residents here at WashU.

She grew up in Lake Villa, Illinois, a northern suburb of Chicago. She attended undergrad at Notre Dame and medical school at the University of Illinois-Chicago. Even though she moved to St. Louis in the middle of a pandemic, she has made this her home and enjoys experiencing the city with her fellow residents. In her free time, she enjoys reading, biking in Forest Park, and relaxing by the pool. She is also a big fan of the Chicago Blackhawks hockey team, which can sometimes be challenging while living in the hometown of one of their biggest rivals!

She is very grateful for the experiences and training she has received thus far at WashU and cannot wait to see where the future takes her.

Melissa Hector-Greene, MD, PhD

Melissa Hector-Greene, MD, PhD

Resident Physician, Class of 2023; ASAP Scholar

Department of Anesthesiology Featured Member: August 2022

Melissa was born and raised on the sunny island of Jamaica. She worked briefly as a high school teacher in Kingston, before deciding to follow her dream of becoming a physician-scientist. After studying Biochemistry at Mount Holyoke College in Massachusetts, she worked as a lab tech/manager in a cancer lab in Boston. She considers herself a Bostonian at heart. She migrated south to Duke University where she earned an MD and PhD in Pharmacology and Molecular Cancer Biology. There, she accidentally became a vascular biologist. At the same time, as a medical student, she discovered her love of all things cardiac anesthesia.

At WashU, she is in the ASAP Residency Research Track and has successfully completed her fellowship in cardiothoracic anesthesiology. She is currently in the dedicated research phase of her program, where she hopes to blaze the trail for anesthesiologists participating in life-saving basic and translational cardiovascular research. Her current project focuses on uncovering the mechanisms of inherited dilated cardiomyopathies, with the goal of developing precision medical therapies that extend and improve the quality of life for heart failure patients. She is a big proponent of interdisciplinary and team science, and enjoys her current collaborations with cardiologists, cardiac surgeons, biophysicists, and informaticians.

Outside of work, Melissa loves to travel and learn about diverse cultures, and hopes one to day to visit every continent. She is a tennis enthusiast and has been to all four Grand Slams. She’s always up for a game, as long as it’s >50F and not actively precipitating. She also likes to garden, paint, and spend time with her husband Shanti and seven-year-old daughter Gabi.

Abby Hegeman

Abby Hegeman

Senior Coordinator of Department Payroll and Administration

Department of Anesthesiology – FAS Employee of the Quarter: June 2025

Abby has been in the St. Louis Metro area all her life but moved to St. Louis City in 2019. She has been with WashU Medicine for almost seven years. She has been with the Department of Anesthesiology for a year and a half and has loved every minute of it. Outside of work she loves learning history, reading, traveling, and spending time with her 3 cats.

Bernadette  Henrichs, PhD, CRNA, CCRN, CHSE

Bernadette Henrichs, PhD, CRNA, CCRN, CHSE

Director, CRNA Education and Research; Director, Nurse Anesthesia Program

Department of Anesthesiology Featured Member: July 2019

Bernadette is the Director of CRNA Education and Research in the Department of Anesthesiology and is also Professor and Director of the Nurse Anesthesia Program at the Goldfarb School of Nursing at Barnes-Jewish College. Dr. Henrichs earned her MSN and PhD from Saint Louis University. Outside of work, Dr. Henrichs enjoys cycling. Several years ago she rode 200 miles in one weekend to raise money for multiple sclerosis.