The RADIUS Logo mark
About us

About the RADIUS Program

A comprehensive care network for people living with IBD and their health care teams

RADIUS is a collective of providers focused on providing excellent care to patients with IBD. Taking a proactive, evidence-based approach, we work together as a multidisciplinary team to optimize and enhance care and to help prevent complications in a patient’s IBD care and treatment.

Transformative impact of our hard work

First established at Dartmouth Hitchcock Medical Center in New Hampshire, RADIUS was developed by Corey Siegel, MD and the NH RADIUS team. RADIUS aims to provide patients with IBD who are living in rural regions with a more proactive and comprehensive team approach to their care, in collaboration with their primary community IBD providers.

Meet our team

Our team from the RADIUS Hub at Dartmouth Hitchcock Medical Center in Lebanon, NH

Corey Siegel, MD, MS
Corey Siegel, MD, MS

IBD Specialist Physician

Offering specialty care and extensive expert experience in IBD

Nicola Felicetti, MSN, RN
Nicola Felicetti, MSN, RN

IBD Nurse Coordinator

Ensuring comprehensive care-coordination prior, during and following the patient’s visit

Jessica Salwen-Deremer, PhD
Jessica Salwen-Deremer, PhD

IBD Psychologist, Mental Health Care Provider

Providing assessment of and recommendations for the ways in which thought and behavior patterns can influence disease management and/or quality of life

Catherine Giguere-Rich
Catherine Giguere-Rich, RD

IBD Nutritionist

An individualized approach towards healthy ways to incorporate diet and nutrition into the lives of patients with IBD

Gina Manzi, RpH
Gina Manzi, PharmD

IBD Pharmacist

Providing education, resources and access to patient-specific specialty medication

Other RADIUS Hub teams

Vanderbilt Health, Nashville, TN

University of Colorado, Aurora, CO

The Oregon Clinic, Portland, OR

RADIUS is growing

Currently, RADIUS has established 4 hubs providing IBD care coordination and education resources, with more sites onboarding in the future.

4

Hub sites

These RADIUS Hub sites are now accepting referrals from established Spoke sites, for patients to be seen with the following gastroenterologists and their teams:

  • Dr. Corey Siegel, Dartmouth Hitchcock Medical Center, Lebanon, NH
  • Dr. Sara Horst, Vanderbilt Health, Nashville, TN
  • Dr. Benjamin Click, University of Colorado, Aurora, CO
  • Dr. Donald Lum, The Oregon Clinic, Portland, OR
11

Supported states

Currently, 11 states benefit from access to our program because of proximity to a Hub or Spoke care provider.