Care Philosophy

I believe that every patient is unique and that gastrointestinal diseases require individualized care. I take the time to understand each patient's background and medical history, ensuring they fully comprehend their conditions. My approach involves creating tailored treatment plans that meet the specific needs of each patient, as I firmly believe that one size does not fit all in healthcare.

About Pornchai Leelasinjaroen (Dr. Lee), MD

Professional Background

Dr. Lee has extensive training and experience in gastroenterology, with a particular focus on gastromotility and inflammatory bowel disease. He trained at the prestigious Medical College of Georgia (Augusta University), known for its world-renowned gastromotility center. Dr. Lee's expertise includes performing advanced procedures such as upper endoscopy, colonoscopy, ERCP, hemorrhoidal banding, and more.
Dr. Lee has been recognized for his scientific contributions, receiving the Scientific Accomplishment as an Early Career Investigator certificate from the American Gastroenterological Association (AGA). He is also an active member of the American College of Gastroenterology, staying engaged with the latest advancements and best practices in his field.

Current Roles

Dr. Lee serves as a Clinical Assistant Professor at Washington State University (WSU), where he shares his knowledge by providing lectures and training to medical residents at the Trios Medical Residency Program. He is committed to contributing to the local healthcare community through his educational efforts.

Personal Life

Outside of his professional life, Dr. Lee is a dedicated family man, raising two children in the Tri-Cities, WA. He enjoys gaming on consoles and PC, as well as staying active at the gym when he has free time.

Commitment to Excellence

Dr. Lee is passionate about delivering high-quality care and is always available to discuss your health concerns in detail. His goal is to ensure you receive the best possible treatment and to help you understand and manage your gastrointestinal health effectively.
Gastro Health is excited to have Dr. Lee as a part of our team. We are confident that you will appreciate his expertise, dedication, and personalized approach to your care.

Conditions & Procedures

  • Abdominal Pain
  • Acid Reflux & GERD
  • Anal Fissures
  • Anal Fistulas
  • Anemia
  • Barrett's Esophagus
  • Biliary Disease
  • Celiac Disease
  • Cirrhosis
  • Clostridium Difficile (C.Diff)
  • Colitis
  • Colon Cancer Screening
  • Colon Diseases & Polyps
  • Colorectal (Colon) Cancer
  • Constipation
  • Crohn’s & Ulcerative Colitis
  • Diarrhea
  • Diverticulitis
  • Dyspepsia
  • Dysphagia
  • Esophageal Disease
  • Gastritis
  • Gastrointestinal Bleeding
  • Gastroparesis
  • H. Pylori
  • Hemorrhoids
  • Hepatitis
  • Indigestion
  • Inflammatory Bowel Disease
  • Irritable Bowel Syndrome
  • Liver Disease
  • Pancreatic Disease & Pancreatitis
  • Peptic Ulcer Disease
  • Radiation Proctitis
  • Swallowing Disorders
  • Capsule Endoscopy (Pill Cam)
  • Colonoscopy (Screening & Diagnostic)
  • EGD (Upper Endoscopy)
  • Esophageal Dilation
  • Esophageal pH Testing (Bravo)
  • Fecal Microbiota Transplant
  • Flexible Sigmoidoscopy
  • Hemorrhoid Treatment & Banding
  • PEG Placement

Office Locations

Primary Location

Picture of the Tri-Cities Office


7114 W Hood Pl.
Kennewick, WA 99336

Phone: 509-734-4885
Fax: 509-734-2576



Chulalongkorn University


St. John Hospital And Medical Center-Detroit


University of Michigan Health System


Medical College of Georgia

Professional Highlights


Board Certified, Gastroenterology

Board Certified, Internal Medicine

Awards & Recognitions

  • Scientific Accomplishment as an Early Career Investigator certificate from the American Gastroenterological Association (AGA)
  • Chief of GI (Fellow)

Professional Memberships

  • American Gastroenterological Association
  • American College of Gastroenterology