• Skip to main content
  • Skip to after header navigation
  • Skip to site footer

ENROLLMENT IS OPEN FOR OUR IBD PSYCHOTHERAPY GROUP! Supporting adults with Crohn’s disease and ulcerative colitis. Click here to join our next virtual group!

GI Psychology

GI Psychology

Mind Your Gut

CONTACT US TODAY

Log into Patient Portal

Careers

703-910-2577

  • Home
  • Leadership
    • Tiffany Duffing, PhD
    • Ali Navidi, PsyD
    • Ellen Joseph, PhD
    • Megan Riehl, PsyD
    • Kimberly Wesley, PsyD
  • Clinicians
    • Anna Katherine “AK” Black, PhD
    • Alexandra “Ali” Chadderdon, Psy.D.
    • Lindsey “Katie” Davis, LCSW
    • Andrea Dughoff, PhD
    • Betsy Gaines, PsyD
    • Leah Grande, Ph.D.
    • Tina Kavarligos, LPC
    • Megan Losik, LCSW
    • Elise R McKelvey, PsyD
    • Denise Powers, PhD
    • Antonia Repollet, PsyD
    • Samantha Silverberg, PhD, LPC
    • Megan Stranski, Psy.D.
    • Allie Warren, LPC
  • Staff
  • Services
  • Getting Started
    • Free 15 Minute Consultation
    • Frequently Asked Questions
  • Resources
    • Brain Bites
    • Blog
  • News
  • Sign up for our Newsletter
  • Contact Us
  • Career Opportunities
  • Login to Patient Portal
  • Home
  • Our Team
    • Leadership
      • Tiffany Duffing, PhD
      • Ali Navidi, PsyD
      • Ellen Joseph, PhD
      • Megan Riehl, PsyD
      • Kimberly Wesley, PsyD
    • Clinicians
      • Anna Katherine “AK” Black, PhD
      • Alexandra “Ali” Chadderdon, Psy.D.
      • Lindsey “Katie” Davis, LCSW
      • Andrea Dughoff, PhD
      • Betsy Gaines, PsyD
      • Leah Grande, Ph.D.
      • Tina Kavarligos, LPC
      • Megan Losik, LCSW
      • Elise R McKelvey, PsyD
      • Denise Powers, PhD
      • Antonia Repollet, PsyD
      • Samantha Silverberg, PhD, LPC
      • Megan Stranski, Psy.D.
      • Allie Warren, LPC
    • Staff
    • Our Partners
  • Services
    • Adults
    • Adolescents
    • Children
    • Women’s Health
    • IBD Psychotherapy Group
    • GI Skills Groups & Workshops
    • Cognitive Behavioral Therapy (CBT)
    • Gut-Directed Hypnotherapy
  • Getting Started
    • Free 15 Minute Consultation
    • New Patients
    • FAQs
  • Resources
    • Brain Bites
    • Blog
    • News
    • Newsletter Signup
  • Contact Us

Clinicians

Our GI Disorder Therapists

At GI Psychology, our GI Disorder Therapists are dedicated experts in treating gastrointestinal disorders, backed by science and a track record of proven success. Specializing in evidence-based treatments for conditions like IBS and chronic pain, our team is united by a profound passion for addressing Disorders of the Gut-Brain Interaction (DGBIs). Each clinician receives rigorous training, ensuring they are equipped to provide comprehensive support to patients on their journey towards recovery. With a commitment to excellence and empathy, we strive to empower individuals to regain control over their health and well-being.

Dr. Anna Katherine Black

AK Black, PhD
Bio

Ali Chadderdon, Psy.D.
Bio

Katie Davis, LCSW
Bio

Andrea Dughoff, PhD
Bio

Betsy Gaines, PsyD

Betsy Gaines, PsyD
Bio

Leah Grande, PhD
Bio

Tina Kavarligos, LPC

Tina Kavarligos, LPC
Bio

Megan Losik, LCSW

Megan Losik, LCSW
Bio

Elise R McKelvey, PsyD
Bio

Denise Powers, PhD
Bio

Antonia Repollet

Antonia Repollet, PsyD
Bio

Samantha Silverberg, LPC, IMH-E

Samantha Silverberg, PhD
Bio

Megan Stranski, PsyD
Bio

Allie Warren, LPC
Bio

Here’s what our clients say…

“I like how she works in partnership with me to figure out what I need , vs. a cookie cutter approach. I feel seen and understood.”

Adult Patient

“The work I have been doing with my therapist has been life-changing. The hypnosis and the tools she has provided me to have been relatable and useful to my day-to-day IBS pain management and associated anxiety.”

Adult IBS Patient

Get started today!

Schedule a Free 15-Minute Consultation
Refer a Patient
Contact Us Today

(703) 910-2577 (Phone)
(703) 661-9463 (Fax)
5244 Lyngate Court, Suite 200
Burke, VA 22015

Office Hours

Monday-Friday 8:00 am to 10:00 pm
Evenings & Saturdays available

  • Facebook
  • Instagram
  • LinkedIn
  • X
  • YouTube
GI Psychology

© 2026 · GI Psychology · All Rights Reserved · Sitemap · Privacy Policy · Careers