Medical Specialties

Meet the Team - Pediatric Pain Management

Team Biographies

Jonathan Jerman, MD, currently serves as the Medical Director of the Phoenix Children's Hospital's Pain Management Program and Section Chief of the Section of Pain Management. 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 Anesthesiology and Pediatric Anesthesiology. His interests include acute and chronic pediatric pain including chronic regional pain syndrome (CRPS).

John S. Jones, MD, is the founder of the Department of Pediatric Pain Management Services at Phoenix Children’s Hospital. He currently serves as the Director of Public Relations and Program Development. He has chaired the medical Staff Pain Management Subcommittee and the Section of Pain Management for 10 years. 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. He is also the current Chair of Anesthesiology and Critical Care Services at PCH.

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.

Hayden Nguyen, MD, is an anesthesiologist trained in pediatric anesthesiology and certified by the American Board of Anesthesiology. Dr. Nguyen received his medical degree from the University of Iowa College of Medicine, Iowa City, Iowa. He completed his internship at the Baylor Medical Center and University of Texas Southwestern Medical Center, both in Dallas, Texas, and stayed at the University of Texas Southwestern Medical Center to complete his residency in anesthesiology. Dr. Nguyen moved to the Boston area to complete his clinical fellowship in pediatric anesthesiology at Children's Hospital Boston through Harvard Medical School, Boston, MA, before joining Phoenix Children's Hospital.

Neil Singhal, MD, 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 currently 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).

Dennis Tong, MD, FAAP, is a Board Certified Anesthesiologist and Pediatric Anesthesiologist who received his medical degree at the University of Michigan in Ann Arbor. He completed his residency at the Hospital of the University of Pennsylvania as chief resident before completing his fellowship in pediatric and cardiac anesthesiology at the Children's Hospital of Philadelphia. Dennis has been with Valley Anesthesiology Consultants and Phoenix Children's Hospital since 2007. He currently serves as the Medical Director of the Chronic Pain Program at Phoenix Children's Hospital and since 2012, he has added acupuncture to his practice of medicine and has a special interest in complimentary alternative therapies (CAM).

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.

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.

Richard Cotugno, MHSM, is the research analyst for the Department of Pediatric Pain Management Services at Phoenix Children's Hospital. He has been a chairman for Quality Assurance and Analytics for the Section of Pain Management since 2010. Mr. Cotugno received his master's degree at Arizona State University in Tempe, AZ. He completed his internship at Phoenix Children's Hospital in the Department of Pediatric Pain Management Services. He is a member of the Psi Chi honor society the American College of Healthcare Executives Executives and the Society of Clinical Research Associates (SOCRA). He is the research analyst for the Department of Pediatric Pain Management Services at Phoenix Children's Hospital. He has been a chairman for Quality Assurance and Analytics for the Section of Pain Management since 2010. Mr. Cotugno received his master's degree at Arizona State University in Tempe, AZ. He completed his internship at Phoenix Children's Hospital in the Department of Pediatric Pain Management Services. 

Visit the Valley Pediatric Pain Consultants website

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(602) 933-1537

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