Terrance P. Riordan, MD, FAAP


Dr. Terry Riordan began working at Panda Pediatrics in 1983. Dr. Riordan graduated magna cum laude from Rockhurst College in Kansas City, Missouri, in 1974. He went on to study medicine at the University of Kansas School of Medicine, fulfilling his pediatric residency and internship at the Letterman Army Medical Center at Presidio in San Francisco.

From 1980 to 1983, he served as Chief of Pediatrics at Reynolds Army Hospital in Fort Sill, Oklahoma. During this time, Dr. Riordan was also a staff member for other hospitals in that area. In 1983, he and his wife, Elaine, moved to Lawrence and joined our practice.

Dr. Riordan is committed not only to quality healthcare for his patients, but also to having parents understand and actively participate in the medical care of their children. As with all of our physicians, he is a credentialed member of the Lawrence Memorial Hospital Department of Pediatrics. He is board certified in Pediatrics and was recertified in 2010.

In addition to his work in our office, Dr. Riordan was elected in 2013 as a Lawrence City Commissioner.  He has been a past board member for the Douglas County Health Department, past board member of Cottonwood and taken part in Trinity Community Services. He served as Chairman of the Douglas County Planning Commission in 2005 and 2006. He is an active member of Corpus Christi Catholic Church and has provided active support for both St. John's Church and School and Corpus Christi Church and School. He and Elaine are part of other charitable organizations as well. They have six children; Kristin, Kelly, John, Matt, Mark and Joe.




Dr. Beth Rundquist has been practicing medicine in the Lawrence community since 1988. She earned a B.A. in Chemistry from Bethany College in 1980. In 1985, she graduated from the University of Kansas School of Medicine and completed her pediatric residency there in 1988. She is proud to be a Kansan and blessed to be a Jayhawk!

Dr. Rundquist's friendly disposition and personal approach with infants and children has endeared her to countless young people who continue to confide in her throughout their teen and college years. She strives to address acute and chronic illness in the realm of well care by encouraging healthy life habits and by paying close attention to development and emotional well-being. Her priority is to help children and families develop into healthy, productive members of our community.

Dr. Rundquist is certified through the Pediatric Board and is a fellow of the American Academy of Pediatrics. She is also a member of the Kansas Medical Society, the Douglas County Medical Society, and is on the Advisory Board for Douglas County Headstart (a federally funded preschool for high risk children). As with all of our physicians, she is a member of the Lawrence Memorial Hospital Department of Pediatrics. 

Dr. Rundquist is married and the mother of two very active, non-smoking, helmet wearing, seat-belt clicking, fully immunized teens.  For more than five years, she has bravely fought breast cancer and emerged with renewed strength of faith and passion for life!  She enjoys baking, gardening, dark chocolate, Diet Coke and has earned T-Shirts at Red Dog's Dog Days for more than ten years.  She is passionate about the arts and children's literature, frequents our local art galleries and theaters, and never misses the Walnut Valley Music Festival in Winfield.




Dr. Marshall Kelley became a partner in Panda Pediatrics in 1994.  Moving to Lawrence from Salina, Kansas where he completed a rural healthcare program after graduating from the University Of Kansas School Of Medicine and completing his residency and internship at Children’s Mercy Hospital in Kansas City. As an undergraduate at the University of Kansas, Marshall was in the Pharmacy School and was a varsity member of the KU Men’s Gymnastics team.  His record for high bar can still be seen in the Booth Hall of Athletics. 

Dr. Kelley loves to interact with families and help guide them through their child’s growth and development.  Studies show 1 in 8 kids have ADHD, it gives him much gratification to provide patients and parents the tools needed to optimize academic and life success.  Dr. Kelley thrives in the world of computers and is an integral part of the electronic medical record system not only for Panda but helps multiple practices around the country.

Dr. Kelley is a credentialed member of the Lawrence Memorial Hospital Department of Pediatrics, has served on the board of directors for: Douglas County CASA (Court Appointment Special Advocates), TinyK and The Shelter. Many of Marshall’s woodworking projects have been donated to these organizations for their annual fundraisers.  He, and his wife Beth, have five children and six grandchildren.




Dr. Waco Goodnight joined this practice in September 2013.  Dr. Goodnight attended The University of Kansas for both his undergraduate degrees in Biology and Chemistry and for medical school.  He completed his residency at Phoenix Children’s Hospital in Arizona.  He is certified through the Pediatric Board and is a fellow of the American Academy of Pediatrics.  

Dr. Goodnight was raised in southwest Kansas; his father is a farmer and rancher, his mother a nurse.  His experience with rural medicine has increased his interest in telemedicine as a way to increase quality of care for populations when pediatricians are not within reach.  Dr. Goodnight also has a special interest in advanced electronic exam devices and charting methods.  He believes that by utilizing all that modern medical technology has to offer, we can treat patients better and more efficiently than ever before.    

Dr. Goodnight is continuing his education by studying to improve his Spanish language skills and by learning more about computer programming.  Dr. Goodnight loves to watch movies, play video games, read comic books and graphic novels, and enjoys riding bikes and walking with his family.  His heroes are Einstein, Edison, and Peter Parker (Spiderman). 

Dr. Waco Goodnight resides in Lawrence with his wife Dr. Katy Lynch, and their children Bode, Blake, Maddie and Mia.




Cynthia Mast, Physician Assistant-Certified, has been with Panda Pediatrics since 2003. She was a 1996 graduate of Lawrence High School and went on to study Human Biology at the University of Kansas. She graduated from KU in 2000 and completed Physician Assistant Studies at Wichita State in 2002. Cindy is certified with the National Commission on Certification of Physician Assistants.

The patients and staff of Panda Pediatrics love Cindy's youthful energy, compassion and sense of humor. She strives to address illness with attention to the overall health and lifestyle of the patients. Cindy sets a good example of wellness and fitness as an active runner with a history of participation in marathons and cross-country throughout school. Cindy is active with her church and enjoys being outdoors. She and her husband have four beautiful children.




Gretchen Wells has been practicing at Panda Pediatrics since 2011.  She received her Bachelor of Science in Nursing at Southwestern College in Winfield, Kansas in 1996.  She worked in emergency medicine and ICU/Trauma until she obtained her Master’s Degree in Nursing from the University of Kansas in 2010.  Gretchen is now an APRN, credentialed with the American Academy of Nurse Practitioners.  In addition to being available for appointments, she helps facilitate our morning walk-in clinic. 

Gretchen grew up in Winfield, Kansas and has lived in Lawrence since 2000.  She has three amazing kids who are all active in school and athletics.  Gretchen likes photography, KU sports and reading.  She is pleased to be a part of this practice and looks forward to participating in your child’s medical care.




Kathryn Hart, Pediatric Nurse Practitioner, joined this practice in November 2017. Kathryn attended the University of Tennessee for her undergraduate degree and went on to pursue her Bachelor’s in Nursing from Georgetown University in Washington D.C. Kathryn earned her Master’s degree as a Pediatric Nurse Practitioner from Vanderbilt University in Nashville, Tennessee. Prior to joining Panda Pediatrics, Kathryn worked as a Mother/Baby Nurse in Atlanta.

Kathryn is excited to apply her experience and passion for helping children to this practice. In her spare time, Kathryn enjoys watching Tennessee Volunteers football, baking and traveling with her husband, Ed.