Our Pediatricians

Our Nurse

Raised in the San Francisco Bay Area, Dr. Riddell comes to us via Stanford University, where he earned his B.S. in Environmental Science.  He received his M.D. and Masters in Public health from Oregon Health & Science University with honors, and completed his pediatric internship and residency at the Boston Combined Residency Program in Pediatrics.  In Boston he was a Teaching Fellow at Boston Medical Center, a Boston University teaching hospital, and a Clinical Fellow at Children’s Hospital Boston, a Harvard University teaching hospital.  Dr. Riddell took over ownership of Jackson Pediatrics from Drs. Little and Ridgway in January, 2014.

In addition to his clinical work, Dr. Riddell has a strong interest in pediatric environmental health and has a record of published research among underserved populations in Nepal, China, and the Philippines.  He has also worked as a clinician in Nepal and Lesotho, and he now serves at the Teton County Public Health Officer.

Travis and his wife Annie have two children: Case, born in 2014; and Lauren, born in 2015.  Travis has longstanding family ties to Jackson Hole and is a hiker, biker, climber, and backcountry skier with experience from the Teton Range to the Himalaya.  The Riddells consider themselves privileged to call this spectacular place home.

Dr. Wheeler was born and raised in St. Cloud, MN.  She attended Kenyon College in Gambier, Ohio where she received a B.A. in psychology with a concentration in neuroscience.  She worked for one year after college, then went on to medical school at The Ohio State University.  Dr. Wheeler met her husband, AJ Wheeler, on the first day of medical school.  He is an emergency department physician at St. John's hospital.  She did her pediatric internship and residency training at the Children's Hospital of Wisconsin in Milwaukee.  

AJ, Keri and their then 18 month-old son, Mason, came to Jackson right after completing their residency training. She has been a part of the wonderful team at Jackson Pediatrics ever since then.  Since moving to Jackson her family has been blessed with the addition of their daughter, Ellie.  Along with work and spending as much time as she can with her family, Keri enjoys distance running, biking, backpacking, camping, and cooking.

James Little Sr., MD, FAAP

Mary Ness, RN

Jackson Pediatrics is the oldest and largest pediatric medical practice in Teton County.  Our board-certified pediatric physician specialists work with infants, children and adolescents through all phases of development.    We are devoted to the comprehensive care of children in sickness and in health.  Jackson Pediatrics is the only facility in the region where your child will always be seen by a board-certified pediatrician. Our physicians are all on the medical staff of St. John’s Medical Center, where we provide neonatal, pediatric, and intensive inpatient care.

Serving our community since 1972

Medical Students

Pediatricians at Jackson Pediatrics are on the clinical faculty of the University of Washington School of Medicine.  We host medical students at six week intervals through the WWAMI program.  Medical students are always directly supervised by our doctors, who always see every patient who comes in to the office.  It is always your choice whether to allow a medical student to see your child, but we appreciate your participation in our educational efforts.  WWAMI is a Washington, Wyoming, Alaska, Montana, and Idaho cooperative program to help train students from western states without their own medical schools, aiming to return physicians to those rural states.

All medical students are continuously supervised, and all Jackson Pediatrics patients will be seen and evaluated by one of our physicians regardless of whether a medical student is involved in the visit. Direct patient interaction is a critical part of the medical school learning experience and we appreciate out patients’ and their family’s willingness to participate. 

However, working with medical students is always optional.  You can always request to visit only with the pediatrician.

Keri Wheeler, MD, FAAP

Travis Riddell, MD, MPH, FAAP

Raised in Helena Montana, Dr. Little did his undergraduate work at Dartmouth College in Hanover, NH, earning a BA in Biology before going to Denver Colorado, where he earned his MD from the University of Colorado School of Medicine. He completed his Pediatric Residency and served as Chief Resident at the University of Wisconsin Hospitals in Madison, Wisconsin.

Jim moved to Jackson in 1972 and started a solo pediatric practice which eventually became Jackson Pediatrics. Jim has been a competitive skier all his life, skiing for Helena High School and Dartmouth College Ski Teams. He has continued to compete in the Jackson Town Downhill.

Jim has watched several generations of kids, including his own, grow up in Jackson. He loves to travel, and has pursued opportunities to see many Total Solar Eclipses around the world. He used to be an avid climber but no longer likes to scare himself and is satisfied with his hiking, biking and photography.

Nurse Ness moved from her home town of Dayton, Ohio to Jackson in 1978.  After floating the rivers, hiking the mountains, and enjoying all Jackson had to offer, she moved to Casper, WY.  There she studied nursing, graduating in 1982.  She lived in Riverton for four years, where she worked on the surgical floor and in the ICU. 

Mary’s triumphant return to Jackson brought her to the Patient Care Unit at St. John’s Medical Center.  Dr. Little “discovered” her in 1986 and she has worked with him ever since!  Mary loves working with kids, and believes they are provided the best care Jackson has to offer.  She is married with three children, one cat, and one rat.

Elizabeth Ridgway, MD, FAAP, Emeritus

Dr. Lisa Ridgway retired from practice in May, 2012.  She wishes to pass on the following to her patients:

It has been such a pleasure and a privilege to work at Jackson Pediatrics for the past 22 years! I have met so many wonderful children and parents, but after having my 69th birthday, I have decided to retire and will not be seeing patients in the office any longer.

The three other Board-certified pediatricians, whom most of you know already, will continue in the office and are happy to see your children while I pursue my other interests of art, gardening and travel. Although I can't contact each of you, I want to assure you that your records will be at Jackson Pediatrics and that you may make appointments with whomever you wish. If this presents a problem for anyone, please leave your name and number at our front desk (307-733-4627), and someone will get back to you. 

I will miss the families that I have gotten to know and the kids I have watched grow and blossom into some amazing young adults! I wish all of you the very best and, please, stay in touch.

Tiffany Milner MD, FAAP, FACP

Born and raised in Texas, Dr. Milner did her undergraduate work at Duke University, where she earned a B.A. in Spanish and Latin American Studies.  She returned to the Lone Star State for medical school, attending the University of Texas Health Science Center at San Antonio.  Residency took her to the University of Utah Medical Center in Salt Lake City, where she completed a residency program in both Internal Medicine and Pediatrics, serving her final year as Chief Resident.

It was in Salt Lake City that Tiffany met her husband Jared, and they both became enamored with the Mountain West.  She also discovered trail running, mountain biking, backpacking, and downhill skiing. 

After residency, Tiffany began a faculty position at Dartmouth Hitchcock Medical Center and Geisel School of Medicine in Lebanon, New Hampshire, where she worked as a combined Internal Medicine and Pediatric Hospitalist.  Tiffany has a strong interest in international and immigrant health.  During her 4 years at Dartmouth, she spent 2014-2015 working as a Pediatrician in Rwanda, where she met Dr. Jim Little.   


Travis J. Riddell, M.D., M.P.H., F.A.A.P.        Keri A. Wheeler, M.D., F.A.A.P.          Tiffany L. Milner, M.D., F.A.A.P.          James R. Little, M.D., F.A.A.P.

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