Gastroenterology and Hepatology Team

Program leadership

Gastroenterology and Hepatology Nutrition Program

  • Kathleen Cross, RD, LD - Adult gastroenterology and weight and wellness
  • Catherine Giguere-Rich, RD, LD, CNSC - Adult gastroenterology

Gastroenterology and Hepatology Fellows

  • Jonathan Beard, MD
  • Obaida Dairi, MD
  • Lauren Eichenwald, MD
  • Nicholas Hannon, MD, Advanced Endoscopy Fellow 
  • Melanie Pascal, MD
  • Hannah Systrom, MD
  • Sarah Zelman, MD

Gastroenterology and Hepatology providers

Jeffrey M. Adler, MD

Gastroenterology and Hepatology

Areas of focus

Locations

  • Lebanon

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Manisha Apte, MD

Gastroenterology and Hepatology

My approach to patient care centers around compassion, empathy, and getting to know you as an individual. As your healthcare provider, you can expect a level of understanding that goes be… Read more

Locations

  • Lebanon

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Steven P. Bensen, MD

Gastroenterology and Hepatology

Areas of focus

  • Biliary tract disease
  • Capsule endoscopy
  • Colonoscopy
  • EGD
  • And 9 more areas of focus

Locations

  • Lebanon

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Theresa Brisson, MSN, APRN, FNP-C

Gastroenterology and Hepatology

The best parts of my job are helping people feel better and educating them so they can better help themselves. It's important that I understand the health concerns from their perspective … Read more

Areas of focus

  • General gastroenterology
  • Colon cancer prevention, screening and surveillance

Locations

  • Lebanon

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Jack T. Bueno, MD

Gastroenterology and Hepatology

Locations

  • Manchester
  • Nashua

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Anissa Burns, MSN, APRN

Gastroenterology and Hepatology

My patients heal best when we work together. It's important that they view themselves as an integral part of their healthcare management. We're a team. In that team, I'm a passionate supp… Read more

Locations

  • Nashua

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Lynn F. Butterly, MD

Gastroenterology and Hepatology

Areas of focus

  • Colonoscopy registry
  • Colorectal cancer screening and prevention
  • Familial risk for colon cancer
  • Risk assessment for colorectal cancer
  • And 1 more areas of focus

Locations

  • Lebanon

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Audrey H. Calderwood, MD, MS

Gastroenterology and Hepatology

I provide personalized care based on my patients' individual needs, experiences, and preferences. This means taking the time to listen and understand my patients' stories and overall goal… Read more

Areas of focus

  • Colon cancer prevention, screening, and surveillance
  • Familial colon cancer
  • Health services research
  • General gastroenterology

Locations

  • Lebanon
  • Manchester

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Nicole M. Calvino, DNP, APRN

Gastroenterology and Hepatology

Locations

  • Lebanon

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Shayla L. Conroy, MS, PA-C

Gastroenterology and Hepatology

Locations

  • Manchester
  • Nashua

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Elizabeth T. Corridan, MSN, APRN

Gastroenterology and Hepatology

Locations

  • Manchester

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Michael A. Curley, MD, FRCPC

Gastroenterology and Hepatology

Listening to my patients is an important part of their visit with me. I appreciate the impact of gastrointestinal disorders on my patients' lives. My goal is to work with my patients and … Read more

Areas of focus

  • Gastrointestinal motility disorders
  • Esophageal disorders
  • Reflux disorders (esophageal and extra-esophageal)
  • Eosinophilic esophagitis (EoE)

Locations

  • Lebanon

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Chelsea N. Curran, MSN, APRN

Gastroenterology and Hepatology

Locations

  • Lebanon

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Jennifer L. Di Nubila, DO

Gastroenterology and Hepatology

Locations

  • Keene

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Connie M.C. Dragnev, MSN, APRN

Gastroenterology and Hepatology

Areas of focus

  • Inflammatory bowel disease

Locations

  • Lebanon

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Mary C. Drinane, MD

Gastroenterology and Hepatology

Areas of focus

Locations

  • Lebanon

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David L. Furman, MD, MS

Gastroenterology and Hepatology

Locations

  • Bennington

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Robyn M. Galvin, MSN, APRN

Gastroenterology and Hepatology

I enjoy getting to know my patients, learning about their needs, promoting preventative measures, then working closely together through all stages of their lives.

Areas of focus

  • Women's health
  • Gastrointestinal (GI) health

Locations

  • Nashua

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Timothy B. Gardner, MD

Gastroenterology and Hepatology

My philosophy is to be transparent and kind, to always offer a path to improving health. This applies while performing treatments or simply listening. Many of my patients face very challe… Read more

Areas of focus

  • Pancreatic disease
  • Endoscopic retrograde cholangiopancreatography (ERCP)
  • Endoscopic ultrasound
  • Liver disease

Locations

  • Lebanon

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Stuart R. Gordon, MD

Gastroenterology and Hepatology

Areas of focus

  • Endoscopic ultrasonography
  • Gallstone disease
  • Liver disease
  • Pancreatic disease
  • And 3 more areas of focus

Locations

  • Lebanon

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Andrew Gorske, MD

Gastroenterology and Hepatology

Locations

  • Keene

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Prasanna V. Gulur, MD

Gastroenterology and Hepatology

I aim to prevent colon cancer in my patients. It is a common and deadly disease and helping patients take preventative steps to avoid it is exceptionally rewarding. No matter the situatio… Read more

Areas of focus

  • Colon cancer screening
  • Video capsule endoscopy

Locations

  • Manchester
  • Nashua

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Jennifer L. Hitchcock, MS, PA-C

Gastroenterology and Hepatology

Locations

  • Manchester

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Erin E. Jablonski, MSN, APRN

Gastroenterology and Hepatology

Locations

  • Keene

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Rachel A. Jeffers, MSN, APRN

Gastroenterology and Hepatology

I believe in treating all patients with respect and compassion. I am passionate about providing high quality care for people with liver disease, and preventing complications. The liver is… Read more

Areas of focus

  • Viral hepatitis
  • Fatty liver
  • Nonalcoholic steatohepatitis (NASH)
  • FibroScan

Locations

  • Lebanon

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David A. Klibansky, MD

Gastroenterology and Hepatology

The care I provide to my patients includes advocacy, personal investment in each individual and their outcomes, and high attention to detail. I strive to provide care that reflects the be… Read more

Areas of focus

  • General gastroenterology
  • Pancreaticobiliary disorders
  • Interventional endoscopy
  • Hepatology

Locations

  • Lebanon

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Torrie R. Lemon, MPAS, PA-C

Gastroenterology and Hepatology

Locations

  • Manchester

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L. Campbell Levy, MD

Gastroenterology and Hepatology

Inflammatory bowel diseases (IDBs) impact each person in different and profound ways. Excellent IBD care requires a unique approach for each person. This takes careful thought and time an… Read more

Areas of focus

  • Colonoscopy
  • Crohn's disease
  • Inflammatory bowel disease
  • Ulcerative colitis
  • And 3 more areas of focus

Locations

  • Lebanon

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Suzannah J. Luft, MD

Gastroenterology and Hepatology

Our digestive systems deeply impact our experience of life. I see that firsthand through my work in gastroenterology and obesity medicine. These worlds often cross. That is because by mai… Read more

Areas of focus

  • Gastroenterology
  • Obesity medicine

Locations

  • Keene
  • Lebanon

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Trinh B. Meyer, MD

Gastroenterology and Hepatology

Areas of focus

  • General gastroenterology
  • Hepatitis (viral hepatitis)

Locations

  • Manchester

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Srikrishna Nagri, MD

Gastroenterology and Hepatology

Areas of focus

  • Colorectal cancer
  • Inflammatory bowel disease

Locations

  • Nashua

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Kayla A. Northam, MSN, APRN

Gastroenterology and Hepatology

I found my passion for gastroenterology (GI) when I saw the significant improvements we can make in our patients' lives. GI complaints are very common, but they have a massive impact on o… Read more

Locations

  • Lebanon

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Heidi J. Odierna, PA-C

Gastroenterology and Hepatology

Areas of focus

  • Hepatitis C

Locations

  • Nashua

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Scott Oosterveen, MD

Gastroenterology and Hepatology

My goal is to deliver patients the best care possible with respect and compassion, just as I would want to be treated.

Areas of focus

  • Endoscopic retrograde cholangiopancreatography (ERCP)
  • Endoscopic ultrasound
  • Pancreatic disease and general gastroenterology

Locations

  • Concord

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Siddhartha Parker, MD

Gastroenterology and Hepatology

My approach to patient care is to provide high quality care to all patients in a warm and compassionate environment. We develop an individualized care plan focused on diagnosis, treatment… Read more

Areas of focus

  • Dr. Parker provides surgical procedures at multiple locations throughout Dartmouth Health, however he is currently only seeing patients for non-procedural appointments at at Dartmouth Hitchcock Medical Center.
  • Colonoscopy
  • Crohn's disease
  • Inflammatory bowel disease
  • And 8 more areas of focus

Locations

  • Lebanon

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Jessica A. Perrone, MPAS, PA-C

Gastroenterology and Hepatology

Locations

  • Lebanon

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Heiko Pohl, MD

Gastroenterology and Hepatology

My goal is to listen and offer care in the same way as I would want to treat a family member.

Areas of focus

  • Esophageal cancer
  • Barrett's esophagus

Locations

  • Manchester
  • White River Junction

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Bethany A. Reutemann, MD

Gastroenterology and Hepatology

Helping others is one of my core values. I want to give back to the community that serves me so well. That's why making people feel better is the best part of my job, whether I achieve th… Read more

Areas of focus

  • Chronic liver disease
  • Cirrhosis
  • Hepatitis B
  • Hepatitis C
  • And 7 more areas of focus

Locations

  • Manchester

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Sarah J. Richardson, MSN, APRN

Gastroenterology and Hepatology

I provide individualized, evidence-based care with compassion and respect. My goal is to prevent disease and promote good health for my patients and my community. Through kind, open discu… Read more

Locations

  • Manchester

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Matthew J. Rockacy, MD

Gastroenterology and Hepatology

Locations

  • Keene

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Richard I. Rothstein, MD

Gastroenterology and Hepatology

Areas of focus

  • Barrett's esophagus
  • Dysphagia
  • Endoscopic surgery for gastroesophageal reflux disease (GERD) and obesity
  • Esophageal disorders
  • And 2 more areas of focus

Locations

  • Lebanon

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Jessica K. Salwen-Deremer, PhD

Psychiatry

As a psychologist, I strive to help each patient feel listened to and taken seriously. I hope that together we can figure out what factors may be driving unhappiness, distress or pain, an… Read more

Areas of focus

  • Behavioral medicine
  • Psychogastroenterology
  • Insomnia
  • Gut-directed hypnotherapy
  • And 1 more areas of focus

Locations

  • Lebanon

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Jamie D. Sanchez, MSN, APRN

Gastroenterology and Hepatology

I'm a big believer in the shared decision-making model. I listen with compassion to my patients. I educate them about their diagnosis and their testing and treatment options. Together, we… Read more

Locations

  • Lebanon

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Timothy D. Scherer, MD, MS-SHCD

Gastroenterology and Hepatology

My office is a healing environment. In my care, patients should feel heard and understood as we work together to improve their quality of life. They are at the center of the decision-maki… Read more

Areas of focus

  • General gastroenterology
  • Inflammatory bowel disease
  • Gastrointestinal cancer
  • Endoscopy

Locations

  • Manchester

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Valerie A. Shields, MMS, PA-C

Gastroenterology and Hepatology

I tailor my approach to each of my patient's unique needs. I listen to patients and give them an opportunity to tell me their story. I take time to answer questions. I try to provide educ… Read more

Areas of focus

  • General gastroenterology
  • Patient education
  • GI cancer screening
  • Pancreatobiliary disease

Locations

  • Lebanon

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Corey A. Siegel, MD, MS

Gastroenterology and Hepatology

Every person is different. We personalize our care for people with Crohn's disease and ulcerative colitis. We need to get ahead of these diseases and prevent problems before they develop.… Read more

Areas of focus

  • Clinical trials for inflammatory bowel disease, colonoscopy, Crohn's Disease, inflammatory bowel disease, ulcerative colitis, upper endoscopy

Locations

  • Lebanon

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Anna A. Thorburn, MSN, APRN

Gastroenterology and Hepatology

What matters most to my patients matters most to me. During our visits, I strive to listen well, educate well, and use a variety of strategies for an approach that puts my patient at its … Read more

Areas of focus

  • Motility disorders
  • Dyspepsia
  • Esophageal disorders
  • Eosinophilic esophagitis
  • And 7 more areas of focus

Locations

  • Lebanon

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Arifa Toor, MD

Gastroenterology and Hepatology

I see diagnosing and managing liver disease as an opportunity to prevent serious illness in the future. Most liver conditions initially have no symptoms, but can be treated and potentiall… Read more

Areas of focus

  • Liver disease
  • Nonalcoholic steatohepatitis (NASH)
  • End stage liver disease
  • Autoimmune hepatitis

Locations

  • Lebanon

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Lauren K. Tormey, MD

Gastroenterology and Hepatology

When problems happen with our gastrointestinal systems, our lives can be affected in so many different ways. My goal is to understand where you are coming from, and help you be in the bes… Read more

Areas of focus

  • Ulcerative colitis
  • Crohn's disease
  • Irritable bowel syndrome
  • Microscopic colitis
  • And 8 more areas of focus

Locations

  • Lebanon
  • Windsor

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Otto W. Trinkl, MD

Gastroenterology and Hepatology

Locations

  • Keene

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Michael W. Winter, MD

Gastroenterology and Hepatology

I strive to be a caring and transparent advocate for my patients. My patients can rely on me to listen to and understand their health concerns. I work with them to develop and implement a… Read more

Areas of focus

  • Inflammatory bowel disease (IBD)
  • Intestinal ultrasound for IBD
  • Clinical trials for IBD
  • Medication decision making in IBD
  • And 4 more areas of focus

Locations

  • Lebanon

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Melissa K. Worth, MSN, APRN

Gastroenterology and Hepatology

The most rewarding aspect of my work is following patients throughout their journey. I enjoy witnessing the positive impact on their everyday life. My motivation for entering medicine st… Read more

Locations

  • Manchester

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Jiaxuan Zhu, MPAS, PA-C

Gastroenterology and Hepatology

Locations

  • Nashua

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