Arch Pediatrics is a practice made up of familiar friends. Our team includes board-certified Washington University pediatricians, skilled nurse practitioners and attentive and compassionate staff.
We share the same commitment to excellence you associate with Washington University Physicians and St. Louis Children’s Hospital. When needed, we connect patients to the advanced technology and consultative support of both. Our physicians are also on staff at Missouri Baptist Medical Center and Mercy Hospital St. Louis.
For more information or appointments, call 314-525-0580.
Colleen Seematter, MD
Medical Degree: St. Louis University School of Medicine
Residency: Pediatrics, Cardinal Glennon Children’s Hospital
Personal: In her free time, Dr. Seematter enjoys attending Cardinals baseball games, hiking and swimming. She is also an avid traveler and enjoys exploring both the United States and the world around us.
Maria Ganninger, MD
Medical Degree: University of Missouri, Kansas City
Clinical Interests: Dr. Ganninger’s clinical interest includes pediatric asthma and allergy management as well as developmental pediatrics.
Personal: In her free time, Dr. Ganninger enjoys spending time with her husband and three sons. She is also is an active member of her church and coaches all three of her sons in basketball. In addition to watching her children play sports, she enjoys playing them herself as well. She also loves traveling and gardening.
Marti Ianiri, CPNP
Master of Science in Nursing: Saint Louis University
Certification: Pediatric Nursing
Clinical Interests: Preventive well child visits and acute care/sick visits
Robert Atteberry, MD
Medical Degree: Saint Louis University (1998)
Residency: University of Louisville (2001)
Personal: Dr. Atteberry loves seeing the smiles of his patients every day. He feels privileged to be included as a partner of the family in raising their child. He understands the joys and challenges of parenting, as he and his wife have two children of their own. In his free time, Dr. Atteberry also appreciates the outdoors, gardening and is a DIY’er around the house.
Steven Mueth, MD
Medical Degree: University of Illinois (1994)
Residency: Cardinal Glennon Children’s Hospital (1997)
Clinical Interests: Pediatric asthma management, weight management and sports-related concerns
Teresa Dillard, CPNP
Master of Science in Nursing: Saint Louis University (1998)
Certification: Pediatric Nursing
Clinical Interests: Pediatric primary care and preventive medicine