Pediatrician Staff

All professionals at Centennial Pediatrics maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in the medical field. Read on to learn more about our staff's experience and training.

Roxann Headley, MD

Roxann Headley, MD

Roxann grew up in Grand Junction, CO. She studied journalism, psychology, and music before turning to medicine. She is a graduate of the University of Colorado School of Medicine. Roxann worked for The Children's Hospital and Denver Gateway Pediatric Clinic before opening Centennial Pediatrics. In her spare time, she nurtures her garden.

Michelle Stanford, MD

Michelle Stanford, MD

Michelle grew up in the eastern plains of Colorado and is the next to last child in a family of five children. 

She graduated from Colorado State University with honors in Biology. Michelle then attended the University of Colorado Medical School before completing her Pediatric Residency at The Children's Hospital, Denver. While at The Children's Hospital she served as Chief Resident. She then worked at The Children's Hospital Gateway Pediatric Clinic before opening Centennial Pediatrics.

Michelle is married and has three children. She enjoys running and hiking in her spare time.

Michelle Stanford, MD

Allison Green, FNP

Allison was born and raised in Northern Virginia, happily claiming her place as the youngest of 4 children! After graduating from the University of Virginia in 1992, Allison spent 5 years on active duty (where she met her husband) and served another 6 years in the USAF Reserves. She earned a Masters in Nursing at the University of Utah in 2000 and is a board-certified Family Nurse Practitioner.

Allison and her husband, a Colorado native, settled here upon his retirement from the Air Force. They have one son and three daughters, each of whom keeps them on their toes and has inspired Allison's love for pediatrics! She likes to hike, ski, watch baseball and sleep in her free time.

Michelle Stanford, MD

H. Trinh Nguyen, MD

Trinh was born and raised in Denver.

She graduated from the University of Denver and from the University of Colorado School of Medicine. She completed her pediatric residency training at Phoenix Children's Hospital and Maricopa Medical Center. Prior to joining Centennial Pediatrics, Trinh worked at Children's Hospital Los Angeles and Mesa Pediatrics in Arizona.

Trinh is married and has one son. In her spare time, she enjoys spending time with her family, reading, hiking, and cheering on the Colorado Avalanche.