Meet Our Provider Staff!

All of our pediatricians are board certified by the American Board of Pediatrics and are members of the American Academy of Pediatrics. The Pediatric Nurse Practitioners (PNP), Child Health Associates (CHA) and Physician Assistants (PA) employed by Advanced Pediatric Associates have received specialized graduate level education and training in pediatrics, and work in a partnership with our pediatricians to provide primary health care services to patients. They are licensed and / or certified in their specialty. 

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We Are Pleased to Introduce the Members of Our Clinical Provider Staff!

Our provider staff consists of physicians, nurse practitioners and physician assistants that specialize in pediatric care for children from infancy through adolescence. These providers bring many combined years of experience, a wide range of specialized interests, and enthusiasm and devotion to providing the very best in health care to our patients. As part of our dedication to continuing medical education, our providers attend a number of clinical presentations each year, and our clinical committee meets regularly to review the latest advancements in clinical care. In addition, our providers have a close relationship with specialists and staff at Children's Hospital Colorado and participate in the University of Colorado Health Sciences Center pediatric teaching program.

Some of the providers at Advanced Pediatrics see patients at more than one office. In general, we recommend that patients choose two or three providers whom they prefer to see most often. Our care coordinators will do their best to accommodate your choice of providers when making appointments. Patients are always welcome to see any of our providers that have an appointment available. 

To sort our provider staff by office location, click on the appropriate button below:

Board Certified Pediatricians

Bradley D. Kurtz DO, FAAP

Dr. Bradley Kurtz graduated from the University of Texas Health Sciences Center in 2000, completing his pediatric residency training at Tulane University Medical Center in New Orleans, Louisiana. During his residency he was voted Best Pediatric Resident by the Tulane medical students. Dr. Bradley Kurtz joined Advanced Pediatrics in 2004, becoming a partner in 2007. Prior to joining Advanced Pediatrics, he worked as a pediatrician at The Children's Medical Center in Covington, Louisiana. Dr. Bradley Kurtz is a D.O. (doctor of osteopathic medicine), completing four years of medical school specializing in pediatrics. As an osteopath, he is trained to treat the entire patient as a whole, rather than focusing on one system or body part. He is board certified by the American Board of Pediatrics, a Fellow of the American Academy of Pediatrics, a member of the clinical faculty at Children's Hospital Colorado, and serves on the Peds Connect Governance Committee at Children's Hospital Colorado. In 2014, Dr. Bradley Kurtz was named a "Top Doctor" by Denver's 5280 Magazine. His interests in pediatrics focus on the overall well being of children being raised in an ever changing and more challenging world. His personal interests include travel, soccer, running, hiking, music and, most importantly, being an involved father to his two young sons. Dr. Bradley Kurtz is the son of Dr. Michael Kurtz, one of the founding partners at Advanced Pediatrics.

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Alison Auster MD, FAAP

Dr. Auster graduated from The University of Illinois College of Medicine in Chicago, Illinois, in 1998, following an undergraduate degree in cellular and molecular biology at the University of Michigan. She completed her pediatric residency at Children's Hospital of Philadelphia in 2001. Prior to joining Advanced Pediatrics in 2014, Dr. Auster worked as a primary care pediatrician for Denver Health and an emergency room pediatrician for Health One hospitals in both Aurora and Denver. She is a Fellow of the American Academy of Pediatrics and a Clinical Instructor of Pediatrics at the University of Colorado Health Sciences Center. Dr. Auster enjoys all aspects of pediatrics, from preventative care to serious illness and injury, with a focus on each child's social and emotional development. Her personal interests include cooking, running, figure skating and spending time with family. She and her husband have a son and a daughter.

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Elizabeth Hemphill MD, FAAP

Dr. Hemphill graduated from the University of New Mexico School of Medicine in 2010, following undergraduate degrees in both biology and Spanish. While in medical school, she was a member of the Gold Humanism Honor Society, which honors excellence in leadership, clinical care, compassion, and dedication to service. After completing her pediatric internship and residency at St. Christopher's Hospital for Children, Dr. Hemphill worked at the Medical Center of Aurora and North Suburban Emergency Rooms, joining APA in 2018. She is a member of both the American Academy of Pediatrics and a Fellow of the American Academy of Pediatricians. Dr. Hemphill's special pediatric interests include helping children develop healthy habits at a young age and helping families through acute illnesses. Her personal interests include playing softball, cooking, hiking, and playing golf. She and her husband have a young daughter. 

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Pediatric Nurse Practitioners and Physician Assistants

Nancy Barber Starr RN, MS, CPNP-PC, PNP-BC

Nancy Barber Starr graduated from the University of Colorado School of Nursing with a masters of science in pediatric nursing and certification as a Pediatric Nurse Practitioner in 1980. She was a clinical nurse specialist for Children's Hospital Perinatal Program until 1984, when she moved to Houston, Texas to work as a pediatric nurse practitioner in a private practice. In 1989, she moved back to Denver and joined Advanced Pediatric Associates. She is an editor, author and reviewer for several pediatric textbooks and journals, and has been involved on a national level with the National Association of Pediatric Nurse Practitioners. Since 1996 she has been nominated annually to Who's Who in America, has served as a child care health consultant to a local preschool and is involved in other community activities.  Her interests in pediatrics focus on behavior / mental health and development issues (especially adoption and ADHD), and she enjoys providing care for our Spanish speaking patients. Her personal interests include crafts, travel and activities with her children. She and her husband have two children, the younger of whom they adopted from China. 

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Brigette Denning MS, CHA/PA-C

Brigette Denning graduated from the University of Colorado Health Sciences Center Physician Assistant/Child Health Associate program and received her master's of science degree in 2005. Following internships at Advanced Pediatrics, The Children's Hospital, University Hospital and a number of other medical clinics in the Denver area, she joined Advanced Pediatrics full time in September of 2005. Brigette is a member of the American Academy of Physician Assistants and The Children's Hospital Grassroots Advocacy Network. She is certified by the National Commission of Physician Assistants. In addition, she is learning to speak Spanish and is a volunteer for several Denver-area non-profits promoting children's health and safety. Her interests in pediatrics focus on adolescent gynecology and dermatology. Her personal interests include playing tennis, running, skiing and travel. She and her husband have two sons and a daughter.

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Rebecca Mark MSN, CPNP

Rebecca Mark graduated from Vanderbilt University with a masters degree in nursing and board certification as a Pediatric Nurse Practitioner in 2010. After two years working at a micropractice in Plymouth, MA, Rebecca joined Rocky Mountain Pediatrics in Lakewood, CO in 2014. She is certified in Nexplanon insertion, and has held certifications in Early Intervention and Pediatric Mental Health in the past. Rebecca is a coach - and founder of the Aurora chapter - of Soccer Nights, a free soccer camp for children than focuses on promoting community. Her special pediatric interests include development, teen birth control and health, and multicultural and low-income family care. Outside of work, Rebecca enjoys soccer, cooking and baking, crocheting, camping, and going on medical mission trips with her husband. She and her husband - a Pediatric GI doctor at Children's Colorado - have four children, as well as two dogs named Hulk and Bailey.

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Looking for a new pediatrician? - Aurora, Centennial, Parker and Denver / Stapleton - Call our Patient Care Line at 303-699-6200.