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Dr. Rahul Seth with patient

Meet Our Team

The Gastric (stomach) and Esophageal Cancer Program has a multidisciplinary team of physicians from multiple specialties to give our patients the most comprehensive treatment available.

Patients with suspected or diagnosed tumors related to these organ systems can often be evaluated by general surgeons, gastroenterologists, medical oncologists, radiation oncologists and interventional radiologists quickly. Each member of this team brings a special expertise. The coordinated efforts allow for a well thought-out and streamlined diagnostic and treatment plan.

Our team includes:

Medical Director

Jason M Wallen, MD

Jason M Wallen, MD, MBA, FACS, FCCP
Assistant Professor of Surgery


Michael A Archer, DO
Michael A Archer, DO
Gastric and Esophageal
315 464-8668
Diseases/Specialties/Treatments: Surgery; Thoracic Surgery; Achalasia; Barretts Esophagitis; Bronchiectasis; Bronchopulmonary Dysplasia (BPD); more
Education: Lake Erie College of Osteopathic Medicine
Research Interests:

Molecular and genetic drivers of thoracic malignancies. Simulation in surgical training. Impact of social media on the dissmenation of scientific and surgical peer-reviewed publications

Education Interests:

Surgical education and simulation in surgical training

Clinical Interests:

Thoracic Surgical Oncology, Robotic thoracic surgery, Benign esophageal disorders, Chest wall tumors, Thoracic outlet syndrome.

Associations/Memberships: Society of Thoracic Surgeons (STS)

Mark J Crye, MD
Mark J Crye, MD
Gastric and Esophageal
315 464-1800
Diseases/Specialties/Treatments: Thoracic Surgery; Achalasia; Barretts Esophagitis; Bronchiectasis; Bronchopulmonary Dysplasia (BPD); Chest Pain (Lung Related); more

Mashaal Dhir, MD
Mashaal Dhir, MD
Gastric and Esophageal
315 464-6295
Diseases/Specialties/Treatments: Surgery; Complex General Surgical Oncology; Endocrine Surgery; General Surgery; Adrenal Gland Cancer; Adrenal Incidentaloma; more
Research Interests:

I am interested in development and implementation of minimally invasive and robotic techniques in the treatment of Liver and Pancreatic diseases. 

Application of molecular markers for the treatment of thyroid cancer

Clinical Interests:

Thryoid diseases, Parathyroid diseases, Neuroendocrine tumors, Adrenal tumors

Liver cancer, Pancreatic cancer, Bile duct cancer, Gallbladder cancer,  Benign pancreatic and hepatobiliary disorders,  Metastatic colorectal cancer, GIST tumors, Stomach cancer

Associations/Memberships: Association for Academic Surgery; International Hepato-Pancreato-Biliary Association (IHPBA); American College of Surgeons (ACS); Americas Hepato-Pancreato-Biliary Association; Society of Surgical Oncology (SSO); American Society of Clinical Oncology - ASCO; American Association of Endocrine Surgeons

Sarah E Hunt, NP
Sarah E Hunt, NP
Gastric and Esophageal
315 464-1857
Diseases/Specialties/Treatments: Thoracic Surgery

Michael D Mix, MD
Michael D Mix, MD
Gastric and Esophageal
315 464-5276
Diseases/Specialties/Treatments: Radiation Oncology; Anal Cancer; Bile Duct Cancer; Brain Cancer; Brain Tumor; Breast Cancer; more
Education: SUNY Upstate Medical University

Ajoy K Roy, MD
Ajoy K Roy, MD
Gastric and Esophageal
315 464-1600

Rahul Seth, DO
Rahul Seth, DO
Gastric and Esophageal
315 464-4353
Diseases/Specialties/Treatments: Internal Medicine; Medical Oncology; Hematology; Advanced Prostate Cancer; All Cancers and Hematological Conditions; Colon and Rectal Cancer; more
Education: New York College of Osteopathic Medicine
Clinical Interests:

Bile Duct Cancer, Gallbladder Cancer, Prostate Cancer, Bladder Cancer, Adrenal Cancer


Anna Shapiro, MD
Anna Shapiro, MD
Gastric and Esophageal
315 464-5276
Diseases/Specialties/Treatments: Radiation Therapy
Education: SUNY Upstate Medical University

Jason M Wallen, MD, MBA, FACS, FCCP
Jason M Wallen, MD, MBA, FACS, FCCP
Gastric and Esophageal
315 464-1800
Diseases/Specialties/Treatments: Thoracic Surgery; Achalasia; Barretts Esophagitis; Bronchiectasis; Bronchopulmonary Dysplasia (BPD); Chest Pain (Lung Related); more
Research Interests:

Lung cancer, lung infections, surgery in patients with limited pulmonary capacity, minimally invasive surgery, endoscopic procedures.

Education Interests:

Surgical Education

Clinical Interests:

Lung Cancer, Esophageal Cancer, Thymus Cancer

GERD/Gastroesophageal Reflux, Hiatal Hernia, Achalasia, Esophageal Diverticula

Minimally invasive surgery, robotic surgery, endoscopic surgery


Holly Briere, nurse navigator
Holly Briere,
Nurse Navigator
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