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Mequon Clinical Associates

Our Clinical Team

Our experienced clinicians offer a wide spectrum of clinical approaches and specialties to meet your needs. Our services are tailored for you personally and are delivered in a safe, confidential and comfortable environment. Whether you are looking for extra support and guidance through a challenging situation or you’re just ready to move in a new direction in your life, we look forward to working with you to achieve your goals.

MCA’s commitment to doing compassionate and caring work is consistent with our mission of ensuring that our work is respectful, qualified, competent and adheres to the highest professional standards of ethical and effective practice. And we’re proud to say that this is a commitment that we’ve been able to meet and exceed since the creation of MCA in 1993.

Jeffrey Taxman

Jeffrey Taxman, M.D., Psychiatrist and Medical Director

A practicing psychiatrist and trained psychoanalyst with over 35 years experience across Wisconsin and the nation, Dr. Taxman has a breadth of experience academically, clinically and medically that strengthens MCA and expands its reach to positively impact the community of Mequon and beyond.

To see Dr. Taxman’s full bio, click here

Christina Keppel, MD

Dr. Keppel is committed to treatment of the whole patient. She is board-certified community psychiatrist with extensive activity in private, inpatient, and outpatient settings. She serves a broad spectrum of adult patients in clinical practice. She has more than 25 years of experience providing psychiatric services within the Milwaukee and Mequon communities.

To see Dr. Keppel’s full bio, click here.

Tina Keppel Psychiatry
Dennis Anderson Psychiatry

Dennis Anderson, CADC III, LCSW

Dennis Anderson is a Licensed Clinical Social Worker and Certified Substance Abuse Counselor who specializes in treating individuals, couples, and families with substance abuse issues. However, he treats a broad range of clients, including those with depression, anxiety, and pain management. Dennis believes that the mind, heart, and spirit are affected and diminished with substance abuse.

To see Dennis Anderson’s full bio, click here.

Judy Jenkins, LCSW

Judy has been practicing psychotherapy for over 25 years. Her practice is built on the belief that all individuals possess inherent strengths. She is committed to supporting individuals as they access those strengths while working through difficult issues and challenging times. Judy’s areas of interest include anxiety, depression, life transitions, women’s issues, older adolescent passages and complicated grief.

Judy Jenkins Psychiatry
Eric Weiner Psychiatry

Eric Weiner, PhD, LMFT, LCSW

He works with individuals, couples, and families with issues of chronic illness, general medical health, anxiety and depression. He has a specialized interest in heart disease and cancer and how it affects the patient as well as other family members. His work has also grown to encompass the psychological and relationship issues associated with family wealth and estate planning.

Patricia Flanagan, PhD

Dr. Flanagan is a licensed clinical psychologist with over 20 years of experience working with young adults, adults and older adults. She specializes in anxiety (generalized anxiety, panic, agoraphobia, social anxiety, and somatic anxiety), relationship issues, mood disorders (depression, persistent depression, and bipolar disorder), loss and grief, life transitions, young adult identity (especially shyness and introversion), divorce adjustment, women’s issues and anger management.

Dr. Flanagan has an M.A. in Counseling Psychology from Boston College and an M.S. and PhD in Clinical Psychology from the University of Wisconsin-Milwaukee. She is credentialed by the National Register of Health Service Psychologists.

Pat Flanagan Psychiatry

Amanda Harris, PsyD

Amanda V. Harris, Psy.D., received her doctorate in clinical psychology from Midwestern University in Downers Grove, Illinois. Prior to joining Mequon Clinical Associates, Dr. Harris provided individual and group therapy in several university counseling centers, as well as performed psychological testing in both inpatient and outpatient settings. At Mequon Clinical Associates, she provides individual therapy to adolescents and young adults, as well as psychological testing to individuals across the lifespan. Dr. Harris has experience in providing services to those struggling with trauma, Autism Spectrum disorder, anxiety disorders, women’s issues, grief and loss, relationship concerns, and low self-esteem.

To see Amanda’s full bio, click here.

Talia Hellman, PMHNP-BC, MSN, APNP, FNP-BC (She/Her pronouns)

Talia is a dual certified psychiatric mental health nurse practitioner (PMHNP) and a family nurse practitioner (FNP). Currently, Talia provides evidence-based treatment for adolescents and adults experiencing mental health concerns including depression, anxiety, OCD, ADHD and other conditions. Talia is passionate about helping others and strives to partner with patients to help them succeed in ways which are meaningful to them. Her work as an FNP in college health helped her develop core skills including a focus on preventative care and safety.

In addition to her role as a nurse practitioner, Talia also has experience teaching in the University setting and working as a registered nurse in an inpatient acute care geriatric setting. These roles have strengthened her ability to think critically, empathize with patients, and teach skills and concepts in an effectual manner. Talia has her BSN from UW-Madison, her MSN from Concordia University and her PMHNP certification from UW-Madison.

Allie Gavin, LCSW

Allie Gavin is a Licensed Clinical Social Worker who works with individuals across the lifespan who are struggle with mood disorders, anxiety disorders, adjustment/life transitions, relationship challenges, substance abuse and other conditions. Allie has clinical experience in a broad range of areas and therapeutic settings including residential treatment, community mental health and substance abuse residential and detox. She provides evidence-based treatment and has extensive background utilizing Dialectical and Cognitive Behavioral Therapy. She believes in collaborating with clients to recognize strengths and motivation. Allie is passionate about empowering clients to recognize their self-worth and utilize it to create a purposeful and meaningful life.
Allie received her master’s degree in Social Work from University of Wisconsin-Madison, in 2017 and has her undergraduate degree in Psychology from the University of Minnesota-Duluth.

Catherine Barchus, LPC-IT, SAC-IT (She/Her/They/Them pronouns)

Katie received her MS in Clinical Mental Health Counseling with a certificate in Trauma-Informed Care from UW-Milwaukee. She has specialized training in the treatment of ADHD, trauma, and addiction. She works with a broad array of concerns, but has a focused interest in ADHD, trauma, anxiety, existential despair, identity exploration, and substance abuse. In her practice, she takes a collaborative approach to care, believing the client is the expert on their lives. She holds a safe, nonjudgmental space while working with clients to identify strengths and learn coping skills. Katie acknowledges the impacts of systems of inequality and oppression and seeks to empower clients to navigate within and overcome barriers. Her goal is to aid clients in finding meaning and creating fulfilling lives.

Katie Barchus TMS


Lisa is a dual certified psychiatric mental health nurse practitioner (PMHNP) and a family nurse practitioner (FNP). She provides a thorough evaluation, diagnosis, and evidence-based medication management to adolescents and adults with various mental health concerns including but not limited to mood disorders, depression, anxiety, trauma, OCD, ADHD, psychotic disorders, and struggles with substance use. Prior to Mequon Clinical Associates, Lisa has experience working in psychiatric telemedicine, family medicine, and working as a registered nurse in general medicine. Her broad experience and passion towards helping others has strengthened her ability to empathize with patients while possessing strong analytical and deductive skills to detect patterns in thought and behaviors in her clients, and then match them to various diagnoses.

Lisa believes in creating a holistic individualized plan of care that values client involvement, empowerment, and interprofessional collaboration in a stigma free environment to help the client reach their optimal self. Lisa has her BSN from Lakeview College of Nursing, her MSN from Concordia University and her PMHNP from Alverno College.

Christina Rahming, MSW, LCSW – (She/Her/They/Them pronouns)

Christina offers a collaborative working relationship so clients can actualize their therapeutic and life goals. She utilizes cognitive behavioral therapy, dialectical behavioral therapy, motivational interviewing, mindfulness skills-based and psychodynamic approaches to treatment. She is further trained in ABA, play and social skills therapy as well as equine-assisted psychotherapy. Christina will work with you to identify and replace unreliable thinking patterns and heal from negative experiences. She offers skill-building and support around emotion identification and regulation as well as organizational challenges, distracted attention and procrastination through building healthy routines and structure. Her treatment areas of focus include adult and youth ADHD and autism spectrum disorders, depression, anxiety, PTSD/trauma, grief/loss, later life transitions and crisis stabilization. Individuals served include children, adolescents and adults (6 – 65+). Her practice is LGBTQIA+ inclusive. Outside the clinic, Christina enjoys hiking, baking, yoga, admiring and creating art and spending quality time with her family.  

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