About Our Doctors
The Doctors of Psychology Resources specialize in individual, couples and family therapy. For more information on our doctors, click on the links below:
Christopher Beckley, PsyD
Dr. Beckley strives to create a safe and supportive environment to help adults and young adults of various backgrounds to feel empowered to achieve their desired changes. He concentrates on addressing concerns including stress, anxiety, depression, life transition, relationships, self-awareness, grief and trauma.
Jennifer L. Bissett, PhD
Dr. Bissett has trained at a wide variety of highly regarded institutions including Psychological Services at the University of Houston, the Pediatric Unit of MD Anderson Hospital, the Psychological Services Unit of the Houston Fire Department and the PIVOT Project. Her training at these respected institutions has uniquely prepared her to work from a generalist perspective…
Betty Brown, PhD
Dr. Betty Brown is a licensed psychologist specializing in work with adults, couples and groups. She received three degrees from the University of Houston including a Master of Education in Counseling and a Ph.D. in Counseling Psychology. Dr. Brown has been a counselor and psychologist on staff at the University of Houston and University of Houston-Clear Lake…
Cynthia Cook, PhD
Dr. Cook is a licensed Psychologist specializing in work with adults, couples, and groups. She is an honors graduate from Kansas State University. She earned her M.A. and Ph.D. from Southern Illinois University in Carbondale, Illinois. Dr. Cook has trained at a variety of well respected institutions, including the Counseling Center at Southern Illinois and Texas A&M Universities…
Brian Kline, PhD
Dr. Brian Kline works with adults and young adults and has expertise helping those with concerns about relationships, depression, anxiety (generalized, social, panic), trauma, career development, and identity development (gender, sexual, and racial/ethnicity identity development). He graduated with honors from State University of New York, Buffalo State College, and he earned his M.A. and Ph.D. from the University at Buffalo, State University of New York.
Sharla Marek, PhD
Dr. Sharla Marek is a counseling psychologist who specializes in work with children, adolescents, and adults. Dr. Marek completed her PhD in Counseling Psychology in 2002 from the University of Houston.
Sherly Medina-Rivera, PsyD
Dr. Medina-Rivera works with children, parents, and/or caregivers, focusing on treating trauma or exposure to adverse experiences including but not limited to stress, anxiety, mood disorders, behavioral disorders, ADHD and life transitions. She completed her Master’s in Counseling Psychology at the Universidad Ana G. Méndez and earned her Master’s and Doctorate of Psychology in Clinical Psychology from the Universidad Albizu. The variety and diversity of Dr. Medina-Rivera’s experiences have allowed her to be mindful, sensitive, and flexible in adapting, integrating, and customizing intervention plans according to the individual needs of her patients.
Nicholas Oleen-Junk, PhD
Dr. Oleen-Junk completed his Ph.D. in Counseling Psychology at the University of Wisconsin-Madison, where he trained in forensic psychology, college student mental health, and multicultural counseling. After finishing his clinical internship at the University of Minnesota’s student counseling center, he worked as a postdoctoral fellow at the University of Kansas Medical Center, where he provided individual, couple, and group counseling to health science students and young medical professionals. Prior to relocating to Houston, Dr. Oleen-Junk served as a Staff Psychologist at Tulane University’s student counseling center in New Orleans.
Lela Pickett, PhD
Dr. Lela Pickett strongly believes that the core of her work is cultivating a safe and collaborative space for her clients. She has expertise in trauma work, multicultural counseling, anxiety, depression, identity development, LGBTQ+, and relationships.
David Pulley, PsyD
Dr. David Pulley “Dr. Dave” is a clinical psychotherapist with decades of counseling experience. His Doctorate degree is in Clinical Psychology with a concentration in Marriage and Family Therapy and a specialization in the subject of Soul Mates. Dr. Pulley enjoys building rapport and connections with clients to address a wide variety of conditions including anxiety, personality issues, adjustment, Leadership and Personal Development, and many other concerns for which he has provided assistance with over the years.
Shahbaz Siddiqui, PsyD
Dr. Shahbaz Siddiqui has substantial training and experience in psychological assessments including a clinical expertise in evaluations for ADHD and autism spectrum disorders. He has worked with a diverse group of clients, ranging from children to seniors, offering personalized care tailored to each individual’s unique needs. Dr. Siddiqui also brings 22 years of experience in media psychology, providing him with unique insights into the intersection of psychology and media influences. In addition to English, he is fluent in Urdu, enabling him to connect with and support clients from diverse linguistic backgrounds.