Meet our team at Harvest Pediatrics! Please take a few moments to learn about our skilled practitioners and our friendly, nurturing staff.

At Harvest Pediatrics, we consider it both a great joy and responsibility to care for children. Most of us are parents ourselves, so we strive to be understanding and available to the families we are privileged to serve. We are honored that you have chosen us as your child's primary medical provider and are confident that you will be pleased with the quality of care and service that we can provide you and your family.

A vital part of our service to children begins with our outstanding staff who works hard to manage and maintain a professional, caring and supportive environment for our patients in a timely manner. Our doctors are lifelong learners. Not only have they received advanced medical training in pediatrics, they continually pursue ongoing education to stay abreast of the latest in child health care.

Your child's health is as important to us as it is to you. We look forward to providing you with excellent medical care your child deserves.

 

Dr. Robert Losey has been in pediatric practice since 1969 and founded Harvest Pediatrics in 1986. He earned his medical degree from Creighton University in Omaha, Nebraska. He completed his pediatric training and fellowship in adolescent medicine at Children’s Hospital of Los Angeles. He subsequently was appointed the Director of Pediatric and Neonatology at California Medical Center in Los Angeles.

Dr. Losey is a former Clinical Professor of Pediatrics at Keck School of Medicine University of Southern California. He is board certified in Pediatrics and Neonatology.

Dr. Losey has been a leader in addressing the health care needs of children and families in Napa Valley. He was instrumental in establishing the Neonatal Intensive Care Unit at the Queen of the Valley Medical Center and successfully collaborated with community partners in starting the “Healthy Mom’s and Babies” program that provides comprehensive prenatal care to low-income women.

His interests include family communication and effective parenting.

Dr. Losey has seven children. He and his wife are active members of their church and grow grapes that are sold to several Napa Valley wineries.

Dr. Ralph Myers joined Harvest Pediatrics in 1992. After earning his medical degree and doctorate in pharmacology and neuroscience, and completing his pediatric residency at the University of Utah, Primary Children's Hospital, he returned to his roots in Northern California. He is board certified in Pediatrics.

Since 1996, Dr. Myers has worked with Dr. T. Berry Brazelton in the Napa County Touchpoints Project, teaching local health care providers, teachers, therapists and childcare workers how to help families understand and value the developmental stages of children. Dr. Myers and his team provide community Touchpoints trainings two times a year. Dr, Myers integrates the concepts of Touchpoints into his delivery of pediatric care, centered on the "parent - provider partnership."

Dr. Myers lives in St. Helena with his wife and two teenage children. He has been very active in community affairs including serving on the boards of The Young School, The Boys and Girls Club and Acorn Soupe.

Much of his free time now is spent in his backyard garden. He is an avid cook with a special interest in seeing that children eat healthfully. Other hobbies include reading, raising orchids and set design/carpentry for high school drama productions.

Dr. Joseph Carrillo joined Harvest Pediatrics in 2004 from Boston, Massachusetts. He completed his medical education and post-graduate training at the University of Arizona, University of Texas Southwestern and Harvard University. He completed a fellowship in developmental & behavioral pediatrics at Children’s Hospital Boston and he is board certified in Pediatrics.

Dr. Carrillo held leadership positions at Children’s Hospital Boston, including Executive Medical Director of the Martha Eliot Health Center and Vice President for Community Health. He is a former Assistant Professor of Pediatrics at Harvard Medical School. In 2000, he assisted leadership at Children’s Hospital Boston to create and establish the Office of Child Advocacy. In 2003, he was appointed as a member of the American Academy of Pediatrics Bright Futures Initiative, Early Childhood Panel, which developed comprehensive national guidelines for pediatric preventive care.

His interests are children with special health care needs, attention deficit disorder, learning disabilities, autism, and early childhood development. He is bilingual in Spanish and has authored scholarly works in cultural competency in medicine. He has a keen interest in health care equity as it relates to diverse and economically disadvantaged communities and how families access health care.

Dr. Carrillo spends much of his free time volunteering at several local non-profit organizations in Napa. He is a member of the Board of Trustees at the Queen of the Valley Medical Center and the Board of Directors of the Napa Valley Community Foundation. He is on the Advisory Council of the Blue Oak School in Napa.

Dr. Carrillo lives in Napa with his Chihuahua, Mickey.

Staci Hemmerlin, CPNP

Staci joined Harvest Pediatrics in February 2000. She attended graduate school at Loma Linda University in Loma Linda, California. Prior to receiving her Master’s Degree as a pediatric nurse practitioner she received a Bachelor of Science in Nursing at Pacific Union College in Angwin, California. The National Certification Board of Pediatric Nurse Practitioners and Nurses and the Board of Registered Nursing, California certifies Staci.

Her professional interests include working with children and families with food allergies and celiac disease.

Staci and her family live in Napa. She, her husband and two boys are avid water skiers and can be found skiing the slopes of Lake Tahoe during the winter. Her son’s are blossoming baseball players and their mother does not miss a game of her boys!

Susan Mickens, CPNP

Susan joined Harvest Pediatrics in June 2009. She graduated from Monmouth University in West Long Branch, New Jersey where she received her Bachelor of Science in Nursing. She then received her Masters of Science Degree in Nursing from Seton Hall University in South Orange, New Jersey with credentialing as a Pediatric Nurse Practitioner in the primary care of infants, children and adolescents. The National Certification Board of Pediatric Nurse Practitioners certifies her.

Susan is a member of the National Association of Pediatric Nurse Practitioners (NAPNAP) and their Special Interest Group (SIG) on Childhood Obesity. Her professional interests include the prevention of childhood obesity and allergies & asthma in children. She participates in the Ready, Set, Go Program at the Queen of the Valley Medical Center. This program provides monthly classes for parents offering ways to improve children’s health through nutrition and exercise.

In her off time Susan enjoys volunteering at her son’s schools, walking her Goldendoodle, Max, exercising, gardening, skiing and sewing. She lives in Napa with her husband and two sons.