Meet the Team

When you come to GPS, you get one clinician — and the expertise of a whole team behind them. Our clinicians consult regularly with one another, which means the depth of the practice is behind every client’s care.

In-Person & Telehealth

SHE/HER

Anna Loiterstein, PsyD

Associate Clinical Director, Licensed Clinical Psychologist

Clinical Lead, OCD & Anxiety · ERP · PCIT · PMT · Children through Young Adults · PSYPACT

I work with children, teens, college students, and young adults — and the parents supporting them. I particularly enjoy working with clients ready to actively engage in treatment who want concrete tools to get their symptoms under control.

Telehealth Only

SHE/HER

Megan Warner, PhD

Founder of GPS, Licensed Clinical Psychologist

Trauma · Emotion Dysregulation · Couples · Perinatal Mental Health · PSYPACT

My clients often don't know what they feel or why they react the way they do. These experiences often have roots in complex trauma, major life transitions, or the weight of motherhood. I also work with couples where emotional flooding makes it impossible to truly connect.

In-Person & Telehealth

SHE/HER

Suzanne Estrada, PhD

Licensed Clinical Psychologist

Clinical Lead, Trauma & PTSD · Veterans · CBT-I · Couples · PSYPACT

I specialize in trauma, sleep, and couples. I'm one of a small number of clinicians in Connecticut trained in CBT-I — Cognitive Behavioral Therapy for Insomnia — one of the most effective treatments for chronic sleep difficulties.

In-Person & Telehealth

SHE/HER

Kathy Tsatsanis, PhD

Licensed Clinical Psychologist

Children & Adolescents · Therapy · Parent Support · Neuropsychological Assessment (limited availability)

Much of my work is helping people make sense of what’s weighing on them. That might be strain in their closest relationships, a shaky sense of who they are, or a season of change that’s left them depleted and unsure of their footing.

In-Person & Telehealth

HE/HIS

Robert Riordan, JD, PsyD

Attorney, Licensed Clinical Psychologist

Couples · High-Achieving Individuals · End-of-Life Care · PSYPACT

I work with high-achieving individuals, couples, and people navigating major life transitions. I specialize in helping people who have accomplished everything they planned — and still feel empty inside.

Telehealth Only

SHE/HER

Kelsea Visalli-Bettag, PhD

Licensed Counseling Psychologist

Athletes at Every Stage · College Students & Young Adults · ADHD · Overthinking & Rejection Sensitivity. Licensed in Florida and PSYPACT-authorized in 40+ states

I work with teens and adults, including athletes at every stage, college students, and men. Many of my clients spend a lot of time second-guessing themselves—replaying conversations, rereading messages, or reviewing performances. I bring warmth and curiosity to helping them understand and change these patterns.

In-Person & Telehealth

SHE/HER

Prerana Patel, LPC

Licensed Professional Counselor

Psychedelic Integration · Complex Trauma · OCD · Grief

I work with complex trauma, OCD, grief, and anxiety. I am also one of a small number of clinicians in Connecticut offering ketamine and psychedelic integration therapy. We do not administer substances.

In-Person & Telehealth

HE/HIS

Mick Kelly, LMFT

Licensed Marriage and Family Therapist

Adults · Couples · Children & Adolescents · Families

I work with adults, couples, children, and adolescents — people dealing with issues that have ground their lives to a halt, and people who feel stuck in ways they can't yet articulate.