Providers   Affinia    Biddle Location


Affinia Healthcare provides trusted health services through highly qualified and dedicated professionals at our six locations. These providers, working along side our dedicated staff and volunteers, have received their training and certifications from some of the most highly-regarded programs in the nation.


Dr. Micaela O'Neil-Callahan
Dr. O'Neil-Callahan earned her undergraduate degree from University of Wisconsin - Madison; medical degree from the University of Wisconsin - School of Medicine and Public Health; and completed her residency at Washington University. Dr. O'Neil-Callahan is board certified in obstetrics and gynecology.
Dr. Erin King
Dr. King earned her undergraduate degree from Stanford University; medical degree from Washington University; and completed her residency at Northwestern Memorial Hospital (Chicago, IL). Dr. King is board certified in obstetrics and gynecology.
Dr. Vivian Knipp
Dr. Knipp earned her undergraduate degree from the University of Missouri - Columbia (Psychology). She also earned from Saint Louis University a Master of Science and Doctor of Philosophy!
Dr. Jenny Walczak
Dr. Walczak earned her undergraduate degree from Marquette University (Psychology Education); doctorate from the Chicago School of Professional Psychology (Chicago, IL); and received her fellowship training at St. Louis Children's Hospital (Department of Psychology).
Dr. Sharon West
Director of Mental Services/Pshychologist
Dr. West received her Ph.D. in Clinical Psychology from the University of Missouri-St. Louis and completed her comprehensive Clinical Internship at Napa State Hospital in Napa Valley, CA. She is a licensed Health Services Provider and has been practicing for more than 20 years. She currently serves as the Director of Mental Services for Affinia Healthcare; which encompasses children, adolescents and adult services.
Dr. Amal Antoun
Dr. Antoun graduated from the Ain Shams University, Faculty of Medicine, Abbasia, Cairo, Egypt . She specializes in Pediatrics.
Dr. David Richards
Internal Medicine
Dr. Richards graduated from the Ohio State University College of Medicine in 2007. He specializes in Internal Medicine.
Dr. Timothy McCann
Internal Medicine
Dr. McCann provides internal medicine services for patients age 18 and older. He is a graduate of the American University of the Caribbean and completed his residency at St. Luke’s Hospital.
Dr. Mary Goggins
Dr. Goggins earned her undergraduate degree at Rockhurst University and her doctorate in Clinical Psychology from the University of Kansas. She completed her pre-doctoral internship at the University of Tennessee Memphis Professional Psychology Internship Consortium.
Dr. Koach Baruch Frazier
Koach Baruch Frazier, Au.D., CCC-A, F-AAA, has more than 10 years of experience. He received his undergraduate degree from Saint Louis University and his doctoral degree in audiology (Au.D.) from Central Michigan University. He is a fellow of the American Academy of Audiology (AAA) as well as a member of ASHA (American Speech-Language-Hearing Association) and holds a certificate of clinical competence in audiology. He is licensed as an audiologist in the state of Missouri.
Dr. Ji Su Hong
Child & Adolescent Psychiatry
Dr. Hong graduated from Yonsei University College of Medicine in South Korea. He had general psychiatry training at Nassau University Medical Center and child-adolescent psychiatry fellowship training at Washington University School of Medicine-St. Louis Children’s Hospital. He is board certified in psychiatry.
Summer Boyer
Nurse Practitioner
Summer graduated with her BSN from Southern Illinois University - Edwardsville in 2000. She served as a Naval Nurse in the United States Navy. In 2011, Summer graduated from University of Missouri - St. Louis with a Master’s degree in Women’s Health.
Patrick Schoenwalder
Physician Assistant
Patrick Schoenwalder, PA-C, MPH, MLS (ASCP) earned his undergraduate degree from Drury University; a Master of Public Health from University of Illinois – Springfield; and a Masters in Medical Science – Physician Assistant degree from St. Louis University. Patrick is also a board certified Clinical Laboratory Scientist.
Dr. Barbara Lutey
Internal Medicine
Dr. Emily Rumora
Internal Medicine