3001 Main Street, Suite 1C | Prescott Valley, AZ 86314
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Harold Maller, M.D.
Dr. Maller has recently joined Yavapai Pediatrics after he and his wife, Cynthia, relocated from Southern California. Dr. Harry, as he prefers to be called, practiced in the San Fernando Valley for over 40 years. He grew up in New York, graduated from Cornell University and the University of Chicago School of Medicine. After serving as an epidemiologist at CDC in Atlanta, he trained in pediatrics at Columbia, and in infectious diseases at USC. He later taught at Children’s Hospital of Los Angeles, attaining the rank of Clinical Professor of Pediatrics. He has been involved in several non-profit activities such as Hollygrove Children’s Home and the Pregnancy Counseling Center of the San Fernando Valley, where he is Medical Director.
Dr. Maller has four grown children and seven grandchildren, all of whom make him proud. His love of Arizona began during his twenty years as a private pilot, as well as his love of photography. Cynthia is an accomplished sculptor and artist, and looks forward to the opportunities that Prescott offers.

Christen M. Glennan, MS, RN, CPNP
Ms. Christen brings with her over 14 years of professional experience in pediatric care and 10 years as a pediatric nurse practitioner. Her collegiate journey brought her from Grand Canyon University where she received a Bachelor of Science in Nursing, to Arizona State University, when in 2008 she received her Master’s. Christen is certified through both the Arizona State Board of Nursing – Advanced Practice Registered Nurse and the Pediatric Nursing Certification Board – Certified Pediatric Nurse Practitioner. She is a fellow of the National Association of Pediatric Nurse Practitioners, and she served as the president of the AZ Chapter of the National Association of Pediatric Nurse Practitioners from 2013-14. She is married with two daughters and loves to read, hike, run, and practice yoga.

Sarah Seistrup, NCMA, Office Manager
Sarah graduated from Maric College in Vista, California in 2005 as a Nationally Certified Medical Assistant. Originally from Sycamore, Illinois, Sarah and her husband Chris, and two children Bailey and Caiden, followed their dream of moving to Arizona and making Prescott home. She has been with Yavapai Pediatrics since opening day in 2013 and transitioned into the Office Manager position in 2015. Sarah is passionate about what she does and has always loved patient care. She enjoys spending time with family and friends and has a love for the outdoors hiking and camping.

 Front Office Staff

Tiffany Albrecht
Tiffany grew up in Davis, CA where she met her best friend and favorite pilot Ryan. They have been married for 20 years and have two daughters, Allyson and Ashley that keep them busy with various sports and dance schedules. Tiffany has worked as a medical coder and front office assistant in a pediatrics office for two years before making the move to Yavapai Pediatrics in 2015. When she isn’t working or attending one of her daughters’ performances, she loves exploring her passion for cooking, watching movies, reading and spending time with her family and their dog!

Elizabeth “Lizzy” VanHorn
Elizabeth is born and raised in AZ and loves it. During her free time, she enjoys exploring new places, seeing live music, reading and being with friends and family. She spends most weekends camping, hiking and loves the outdoors. Before joining our team at Yavapai Pediatrics she was a preschool teacher and nanny. Working with children has always been her passion and she hopes to start her own family someday. She is known for her bubbly and outgoing personality.

Karen Ibarra
Karen was born in California but considers Arizona her home. She is a native to Prescott Valley where she also met her husband and had her two wonderful children. Her love and compassion for children and the community brought her to Yavapai Pediatrics. She enjoys helping others and also loves to be able to serve the Hispanic Community. Karen is fluent in Spanish. When she is not in the office she spends most of her time crafting, attending her children’s extracurricular activities and exploring new places with her family and friends.

 Back Office Staff

Meagan Coomer, RN
Meagan has been with Yavapai Pediatrics since we opened our doors in 2013. She graduated from Yavapai College in 2012 as a Registered Nurse and has enjoyed working in Pediatrics since then. She loves being able to help every family that come through our doors. Meagan’s strong belief that you can learn something new every day has resulted in her being an excellent educator to our families. She loves to share her knowledge with parents and families and learns new things from them too. When she is not working, Meagan enjoys spending time with her husband Mikey and their 2 busy boys Quinn and Bryce. She loves spending time with friends and family, baking and being outdoors.

Sara Brock, LPN
Sara joined Yavapai Pediatrics in August 2014 with over 8 years’ experience in pediatric care. She graduated from Columbus State community College in 2005 as a Licensed Practical Nurse. She and her husband relocated to Arizona, from Dublin Ohio in 2006. Sara has three young children that keep her very active. She enjoys camping, hiking, backpacking and exploring Arizona with her family.

Charlotte Chandler, MA
Charlotte graduated from Pima Medical Institute in Tucson, AZ as a Medical Assistant in 2013. She has since relocated to Prescott where she grew up. She has previously worked at an Urgent Care, Retina Specialist, and is now enjoying working in pediatrics. When she has free time, she enjoys spending time with family and friends, reading and being outdoors.

Annai Hernandez
Born and raised in Arizona, Annai has been with the Yavapai Pediatrics family since opening day. She genuinely loves her job and tries her best to provide the best patient care experience. Annai has transitioned from our front office to our back office and is fluent in Spanish. She has three children, Isaac, Jesiah and Arianna. In her spare time, she enjoys spending quality time with her children; they enjoy going to the zoo and aquarium as well as going to the park in the evening. They also enjoy traveling and movie night with friends and family.