Medical Specialties

Meet the Team - Pediatric Pain Management


Team Biographies

Jonathan Jerman, MD, is the Medical Director and Section Chief of the Phoenix Children's Hospital Pain Medicine Program. Dr. Jerman earned his Medical Degree from the University of Utah in Salt Lake City, UT and completed his anesthesiology training at the University of Florida. He then moved to Cincinnati, OH where he completed a pediatric anesthesiology fellowship at Cincinnati Children's Hospital Medical Center. Dr. Jerman is Board Certified in Pediatric Anesthesiology, and is a diplomat of the American Board of Anesthesiology. His interests include acute and chronic pediatric pain including chronic regional pain syndrome (CRPS). Dr. Jerman grew up in Arizona and enjoys spending time outdoors with his wife and 5 children.

John S. Jones, MD, is the founder of the Pediatric Pain Medicine Program at Phoenix Children's Hospital, and served as its Medical Director and Section Chief for 10 years. He currently works as the Director of Public Relations and Program Development. Dr. Jones earned his medical degree at The University of Arizona College of Medicine in Tucson. He completed his internship in anesthesiology and critical care medicine at Memorial Sloan-Kettering Cancer Center, his residency in anesthesiology at The New York Hospital/Cornell Medical Center and his fellowship in pediatric anesthesiology and critical care at Children's National Medical Center in Washington, D.C. He joined Valley Anesthesiology Consultants and the Phoenix Children's Hospital medical staff in 1997.

Jeffrey Hanson, MD, is a diplomat of the American Board of Anesthesiology. He completed his medical training at the Medical College of Wisconsin and then completed his anesthesiology training at the Mayo Clinic in Rochester, MN. Dr. Hanson was trained in pediatric anesthesiology at Nemours Children’s Clinic and Mayo Clinic in Jacksonville, FL. His special interests include acute pain and regional anesthesiology.

Anthony Koo, MD, is board certified in both anesthesiology and in Pediatric Anesthesiology. He received his medical degree from Rush Medical College in Chicago, IL. He completed his internship and anesthesiology residency at the University of Washington in Seattle, WA. He finished a pediatric anesthesiology fellowship from the Medical College of Wisconsin's affiliated hospital Children's Hospital of Wisconsin in Milwaukee, WI. He also serves as the Chief Technology Officer of Valley Anesthesiology Consultants.

Neil Singhal, MD, is the Vice Chief of Pain Medicine at Phoenix Children’s Hospital. He is a Board Certified Anesthesiologist and Pediatric Anesthesiologist who received his medical degree at the University of Arizona College of Medicine. He trained at Baylor College of Medicine in Houston, TX, where he completed his training as Chief Resident before pursuing his fellowship. He moved to Denver, CO, where he served as Chief Fellow at Children's Hospital of Colorado, and focused on pediatric regional and cardiac anesthesiology. He also serves as the Director of Research for the pain program, and is a member of the Pharmacy and Therapeutics Committee and the Phoenix Children’s Hospital Institutional Review Board (IRB).

Mark P. Popenhagen, PsyD, is a psychologist with clinical specialization in Pediatric Psychology, Pain Management, and Palliative Care. He received his doctoral degree at the Minnesota School of Professional Psychology (currently Argosy University), in Egan, Minnesota. After completing his fellowship in Pediatric Psychology at St. Jude Children's Research Hospital in Memphis, Tennessee, he continued on as their pain psychologist. He went on to pursue further pain management and palliative care opportunities at the University of Colorado/Children's Hospital of Denver and Loyola University Medical Center/Ronald McDonald Children's Hospital in Maywood, Illinois. Dr. Popenhagen joined Phoenix Children's Hospital in early 2013, and is serving as the Program Director of the Complex Chronic Pain Program.

M. Susan Butler Ching, CPNP, is a certified acute care pediatric nurse practitioner. She completed her undergraduate nursing degree at Arizona State University and began her nursing career in hematology and oncology at Phoenix Children's Hospital. She completed her Masters Degree of Nursing – Acute Care Pediatrics at Vanderbilt University School of Nursing.  She enjoys the multidisciplinary approach to treating both acute and chronic pain, specifically pain from sickle cell anemia and other chronic childhood illnesses.

Rebecca Hogan, CPNP,is a certified acute care pediatric nurse practitioner. She completed her undergraduate nursing degree at Arizona State University and began her nursing career at Phoenix Children's Hospital. She returned to school at the University of Pennsylvania in Philadelphia where she received her Master's in Nursing in Acute Care Pediatrics with a minor in palliative care. Before returning to Phoenix Children's hospital and joining our pain management team, she practiced at the Children's Hospital of Orange County in Southern California, Memorial Sloan Kettering Cancer Center in New York, and in a primary care practice. She has specialized in pediatric oncology and palliative care and has a strong interest in working with families and children with chronic childhood illnesses.

Janet Semenova, CPNP - Board certified pediatric acute care nurse practitioner and member of the Department of Pain Management since 2009. Janet received her undergraduate nursing degree from Rush University in Chicago in 2005 and her Masters of Nursing degree from the University of Pennsylvania in 2008. Prior to starting graduate school Janet worked as a nurse on both pediatric oncology and pediatric intensive care units. She has a passion for pediatrics and enjoys teaching nursing students and residents as well as fellow providers about new advances in pain medicine. She also has an interest in exploring holistic approaches to the treatment of pain including the roles of herbal therapies, acupuncture, diet, psychology, physical therapy and yoga.

Vanessa Pohl, B.S., Pediatric Pain Service’s Research Analyst. Ms. Pohl received her Bachelors of Science in Health Sciences with Honors at Arizona State University and aspires to attend Medical School in the near future. She currently serves as the Research Analyst for the Pediatric Pain Management Service at Phoenix Children’s Hospital conducting clinical trials and mentoring interns. In the past, she served as a research intern for the Pain Management Service gathering data and preparing study proposals. She has been involved in various research projects with the T. Denny Sanford School of Social and Family Dynamics at Arizona State focusing on children’s sleep habits, social relationships, and academic achievement. Vanessa has also spent time with the Barrow’s Neurologic Institute at St. Joseph’s Hospital, working on neuroglioma research. In her free time, she enjoys photography, painting, and traveling.

Visit the Valley Pediatric Pain Consultants website

Contact Us

For clinic appointments and referrals, call 602-933-0220

For program information and inpatient pain services, call 602-933-1537

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