Our Drug Addiction Treatment Team


Daniel Smeester, MD
Chief Medical Director

Dr. Smeester is certified by the American Board of Emergency Medicine and the American Board of Addiction Medicine.  He founded Diablo Valley Drug and Alcohol Services after spending many years in hospital emergency rooms treating people suffering from chemical dependency.

A graduate of California Lutheran University in Thousand Oaks, California, Dr. Smeester obtained his medical degree at Ponce Health Sciences University in Puerto Rico and served his residency in Emergency Medicine through New York Medical College, where he earned distinguished awards of excellence and was named Chief Resident.  As an owner and lover of horses, Dr. Smeester is particularly interested in using Equine Therapy as an addiction management tool.

Jeri Stegman, M.A., CATC
Clinical Director

Ms. Stegman has worked in Behavioral Health for nearly 30 years in both inpatient and outpatient settings.  In addition to providing substance abuse counseling for many years, she has worked in Senior Management at a leading Behavioral Healthcare Non-Profit organization, where she managed several criminal justice, adolescent treatment, women’s perinatal treatment and a federally funded adolescent substance abuse prevention program.

She has developed and directed innovative and intensive outpatient programs that treat substance abuse and co-occurring mental health disorders.  Ms. Stegman has been a Behavioral Health Accreditation Surveyor with CARF International for several years and is the Principal and Founder of JS Consulting, which provides accreditation consulting services to organizations seeking CARF or JCAHO accreditation.

Antoinette Temple, MA
IOP Educator and Group Facilitator

Antoinette Temple graduated with a Master’s Degree in Counseling Psychology from the Graduate School of Holistic studies at John F. Kennedy University in Pleasant Hill, CA in 2010.  Ms. Temple received her BS in Psychology in 1990. She is currently licensed as a Marriage and Family Therapist. She has worked in the field of substance abuse for eight years, counseling individuals and families and facilitating process and educational groups.  Her formal training includes dialectical and cognitive behavioral therapy.  She specializes in holistic mind, body, and spirit modalities which help heal the effects of trauma and addiction. These include: role-play, meditation, and guided imagery.

Karin Clark, MA, RADT
Senior Therapist

Karin Clark has worked in the mental health and substance use disorder field since 1988. Karin began her career as a high school teacher in Oakland, CA after graduating from UC Berkeley with a double major in English and Sociology and then completing graduate work in Secondary Education. Ten years later, she returned to John F Kennedy University to receive her Masters in Transpersonal Psychology from the Graduate School of Holistic Studies.  She has applied this background in private practice, Dual Diagnosis (Co-occurring disorder) programs, high schools, and Substance Abuse programs in Wisconsin and California, as well as teaching courses in the field for two WI Universities.  

Currently, Karin is the Senior Counselor for Diablo Valley Drug and Alcohol Services. In this role, Karin assists the Clinical Director with Intakes, Assessments, treatment plans and insurance certifications.  In addition, Karin supervises the interns we are lucky enough to work with, mostly students from the Diablo Valley College Addiction Studies program. She also partners with the Eco-Therapy volunteer who helps us to develop the community garden plots we cultivate and tend.  Finally, Karin facilitates our Monday, Wednesday and Friday evening IOP group, sees patients for one-one counseling sessions and develops the curriculum for the 12 week IOP program education tracts.  

John Noble

John Noble is currently a student in the Addiction Studies program at Diablo Valley College, working toward an Associate’s degree and becoming a CAADE certified Alcohol & Drug Abuse Counselor. He has worked in Behavioral Health as a TMS (Transcranial Magnetic Stimulation).

Technician since 2015 and is certified by Brainsway Deep TMS and Neurosoft Neuro-MS/D. He is planning on pursuing higher education to at least the Master’s level in Neuroscience or Social Work. John is the father of a beautiful 4-year-old little girl and enjoys Crossfit, mountain biking, snow skiing and listening to music, especially “Dr.” Marley. 

Ashley Ganem

Ashley Ganem is currently enrolled in the Addiction Studies program at Diablo Valley College and has been an intern at DVDAS since August of 2017.. She completed her BA at Cal State East Bay in English in 2014. In addition to her internship and completing her Addiction Certification program, Ashley works fulltime as a Care Coordinator at Bright Heart Health telemedicine program, a program serving clients nationwide with medically supervised addiction and eating disorder issues. She has been with Bright Heart Health since its inception in March of 2015.

Ashley’s experience at Bright Heart has confirmed her desire and intention to pursue a career in the mental health field. She is passionate about serving the large population in our society who finds themselves plagued with addiction. In addition to receiving her certification in addiction studies in December of 2017, Ashley plans to return to school for a Master’s degree in Psychology or Social Work. She believes this will be the ideal avenue to allow here to fulfill her passion for service and her purpose in life. Her personal experiences with people and the essence of who she is as a human being have well prepared her for this path and offer strength to the gifts she will bring to the field.


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