Meet Our Team

South Valley Children’s Dentistry & Orthodontics has pediatric dental specialists on staff overseeing our dental operations. Pediatric dentists are children’s dentists who elect to take an extra two years of schooling to specialize in pediatric dentistry. Our children’s dentists work with children aged nine months to 18 years, and with special needs patients up to 26 years. No matter how minor or serious your child’s needs are, we have the knowledge and technology upon which you can rely.

dr. purcell

Jennifer Stevens, DDS

Jennifer Stevens, DDS, grew up in Albuquerque, New Mexico and attended Eldorado High School. She received her BS degree in Biology from the University of Arizona and became interested in dentistry through college dental clubs and by shadowing her childhood dentist during summer vacations back in Albuquerque. She went on to earn her Doctorate of Dental Surgery from the University of Colorado in Denver.

In her spare time, Jenny likes to play soccer, paint, read, spend time with family and friends and hike in the beautiful Sandia Mountains! w


dr. purcell

Vaughn Call, DMD

Vaughn Call, DMD was born and raised in Phoenix, Arizona. He attended ASU for his undergraduate studies in Biology. He completed his dental education in Glendale, AZ, at Midwestern University. After dental school, he completed a pediatric dentistry residency with NYU Lutheran in Tucson, AZ.  Vaughn is thrilled to be starting his dental career staying in the Southwest. He speaks Spanish fluently, and loves working with children.

In his spare time, Vaughn loves being outdoors, gardening, building furniture, and enjoying time with his wife and four kids. 

dr. bush

Helen D. Bush, DMD, MDS - Orthodontist

Helen D. Bush, D.M.D., M.D.S., is originally from Pittsburgh, PA where she earned her Bachelor of Science degree, graduating Summa Cum Laude, in the field of Health Related Professions.  She earned her D.M.D. dental degree from the University of Pittsburgh as Valedictorian.  After dental school, she completed 3 years of specialty training in Orthodontics and Dentofacial Orthopedics also at the University of Pittsburgh, earning a Master of Science degree. Dr. Bush has worked on the Navajo Reservation in New Mexico with a non-profit organization serving the Navajo people for several years.  As a member of the American Association of Orthodontists and the American Dental Association, she stays current with the latest developments in technology in orthodontics through continuing education courses.

  Dr. Bush enjoys spending time with her husband Stew and their two pet cockatoos.

dr. spencer tasker

Spencer J. Tasker, DMD

Spencer J. Tasker, DMD is the Co-founder and Chief Technical Officer for South Valley Children's Dentistry & Orthodontics. A board certified New Mexico licensed pediatric dentist, Dr. Tasker received his undergraduate degree from Brigham Young University and attended Case Western University’s School of Dental Medicine in Cleveland, Ohio. He completed his pediatric specialty training in 2006 at Rainbow Babies and Children’s Hospital, also in Cleveland, Ohio. Additionally, he has practiced in the Oral Emergency Care Unit at the University of New Mexico and has served in nonprofit oral health and volunteering initiatives abroad in the Dominican Republic and the Island of Samoa.

In his free time, Dr. Tasker enjoys spending time with his wife Sarah and daughters Sydney and Ella, as well as golfing, watching sporting events of all kinds, and has completed over 25 full marathons.


Jim Tasker

Jim Tasker is the Co-founder, Chief Human Resources and Business Development Officer for South Valley Children's Dentistry & Orthodontics.  After high school in Southwest Oklahoma, Jim received an undergraduate degree in Japanese from Brigham Young University and a Masters Degree in Business from the Goizueta Business School at Emory University.  Prior to starting South Valley Children's Dentistry & Orthodontics,  Jim spent the first 12 years of his career holding leadership positions in the field of Human Resources for Fortune 500 organizations such as General Mills, Berkshire Hathaway, and Pulte Homes.

The father of six children, he enjoys spending time with his family, enjoying the outdoors of New Mexico and Colorado, watching Professional English soccer, and has completed 15 full marathons, including the Boston Marathon three times in 2009, 2010 & 2017.


R Ganon Rowan, DMD

R. Ganon Rowan, DMD is the Chief Operating Officer of South Valley Children's Dentistry & Orthodontics.  He grew up in Merced, California and earned an undergraduate degree in Spanish. He earned his Doctor of Medical Dentistry from Case Western University’s School of Dental Medicine. He is certified to perform oral conscious sedation.  Dr. Rowan is a board member of the G3 Foundation, a humanitarian organization that provides year round humanitarian dental and health services to areas in the Dominican Republic.  He has also traveled to Samoa to provide humanitarian dental services.

In his free time, he enjoys spending time with his wife Jennie and their 5 children, playing golf and traveling.