Clinicians

Erin Cooper, PhD
Owner, Clinical Director, Psychologist

Dr. Erin Cooper is a Clinical Psychologist who specializes in the evaluation and evidence-based treatment of mood disorders, anxiety and stress, trauma, interpersonal and romantic relationships (e.g., communication, parenting, conflict, and infidelity), women’s health (e.g., pregnancy, postpartum, menopause), disordered eating and body image, health-related behavioral changes (e.g., adjustment to chronic illness, making lifestyle changes to improve medical conditions or overall wellbeing), sexual health and behavior, and difficulties associated with LGBTQ+ identification. Dr. Cooper also has lived experience as and interest in the trauma and stress of disability/complex medical needs parenting. Dr. Cooper utilizes Cognitive Behavioral Therapy (CBT), Dialectical Behavioral Therapy (DBT), and Integrated Behavioral Couples Therapy (IBCT) informed treatment strategies to support patients in reaching their goals.

Dr. Cooper obtained her Bachelor of Science degree from Kenyon College and earned both her Master’s degree and Doctorate (Ph.D.) in Clinical Psychology from Temple University. Dr. Cooper is a credentialed National Health Service Psychologist and has been a Clinical Instructor for Case Western Reserve University School of Medicine.

Dr. Cooper’s work has been featured in the Archives of Sexual Behavior, Journal of Sexual Medicine, Journal of Sex Research, Sexual Addiction and Compulsivity, Psychiatric Times, Time Magazine, New York Magazine, USA Today, Elle Magazine, Huffington Post, Women’s Health Magazine, Men’s Health Magazine, and others. In 2017, she was named Outstanding Early Career Psychologist by the Cleveland Psychological Association.

When she’s not working, Dr. Cooper is spending time with family, advocating for Rare Disease, and fundraising for Prader Willi Syndrome research. She also enjoys taking pictures and hiking.

Mackenzie Keriazes, PsyD

Dr. Mackenzie Keriazes is a Clinical Psychologist with expertise across the human lifespan. She treats depression, anxiety, mood disorders, adjustment to life transitions, bereavement, behavioral
issues, disordered eating, weight related concerns, personality disorders, stress management, workplace burnout, trauma, disease management, and more. Dr. Keriazes has experience working and consulting with multidisciplinary teams in settings ranging from primary and specialty care clinics, college counseling center, immigration and refugee center, elementary school, and rehabilitation hospital. Dr. Keriazes values evidence-based treatment and learns a great deal from those who share their stories with her. She views change through the collaboration of what she brings, what her patients bring, and what the research suggests (which are all ever-evolving!).

Dr. Keriazes obtained her Bachelor of Arts degree from Ohio Northern University in Ada, Ohio and earned both her Master’s degree and Doctorate (Psy.D.) in Clinical Psychology from Spalding University in Louisville, Kentucky. She completed her predoctoral internship at Carle Foundation Hospital in Champaign, Illinois and her postdoctoral fellowship at MetroHealth Medical Center in Cleveland, Ohio.

Dr. Keriazes’s work has been featured in peer-reviewed journals such as Psychoneuroendocrinology, Brain and Cognition, Physiology and Behavior. She has co-authored chapters pertaining to promoting cultural competence and bridging the digital divide in classrooms. Dr. Keriazes was also a featured writer on a local children’s health magazine.

When not working, Dr. Keriazes enjoys spending time with loved ones adventuring in the great outdoors.

*Dr. Keriazes is available to see patients and also provides supervision to trainees.

Jeffrey Jack, LPCC

Jeffrey Jack is a Licensed Professional Clinical Counselor who specializes in the evidence-based treatment of depression, anxiety, trauma, stress, and OCD. Mr. Jack has expertise in treating family conflict, parenting challenges, and childhood behavioral disorders including Autism Spectrum Disorder.  Mr. Jack excels at helping parents find creative solutions that derive from their family’s value system to create lasting change.  He utilizes Cognitive Behavior Therapy (CBT), Acceptance and Commitment Therapy (ACT), Motivational Interviewing, Behavior Therapy, and Person-Centered approaches to empower children, adolescents, adults, and families reach their goals and find meaning through the obstacles faced in life.  Mr. Jack offers individual child/adolescent therapy, individual adult therapy, family therapy, and parenting psychoeducational groups. 

Mr. Jack received his Bachelor’s Degree in Psychology from Bowling Green State University and a Master’s Degree in Clinical Mental Health Counseling from John Carroll University.  He brings experience from Cleveland Clinic’s Center for Autism, Cleveland Clinic Pediatric Behavioral Health, and community mental health agencies throughout Cleveland. 

Hallie Tankha, PhD

Dr. Hallie Tankha earned her Master of Education in Clinical Mental Health Counseling from Cleveland State University her Ph.D. in Clinical Psychology from Wayne State University. She recently completed her predoctoral internship at MetroHealth Medical Center with a focus on health psychology including chronic pain, substance use disorders, and treating patients with complex medical and mental health problems. Dr. Tanka’s work has been published in several prominent journals. 

Dr. Tankha values evidence-based treatment and the therapeutic relationship when treating a variety of mental health and physical concerns. She utilizes Cognitive Behavioral Therapy (CBT), CBT for Chronic Pain, Emotion-Focused Therapy (EFT), Relational Therapy, and Psychodynamic Therapy to treat chronic pain (in individuals and couples where one or both partners have pain), women’s health, and developmental life transitions (e.g., starting college, pregnancy, marriage, end of relationships). She also works with couples who would like to improve communication, intimacy, relationship satisfaction, or couples who have experienced infidelity.

When she is not working, Dr. Tankha loves bird watching, gardening, and catching up on the latest Netflix series.

*Dr. Tankha is available to see patients and also provides supervision to trainees.

Carol Hoffstetter, LISW-S

Carol Hoffstetter is a Licensed Independent Social Worker Supervisor who specializes in the evidenced-based treatment of anxiety, mood disorders, trauma, life transitions, stress management, parenting, child/adolescent issues, and relationship difficulties. Ms. Hoffstetter has expertise helping individual adults reached their stated goals as well as helping children, teens, and their families work through behavioral issues, emotional difficulties, and family conflict. To help patients, reduce their distress, Ms. Hoffstetter uses Cognitive Behavioral Therapy (CBT), Trauma Focused Cognitive Behavioral Therapy (TFCBT), Alternative for Families Cognitive Behavioral Therapy (AF-CBT), Motivational Interviewing (MI), and Connect, an attachment-based parenting program.

Ms. Hoffstetter obtained her undergraduate degree in Social Work from Ashland University and her Master’s Degree in Social Work from Cleveland State University.

*Carol Hoffstetter is now available to see patients, and also provides supervision to trainees.


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