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Gastroenterology

Contact us:

900 Stevens Drive, Suite 101
Richland, WA 99352
(509) 942-3180

Kadlec Clinic Gastroenterology specializes in the diagnosis and treatment of disorders of the digestive system including the esophagus, stomach, small intestine, colon and rectum, pancreas, liver, gallbladder and biliary system.

Dr. Maher is experienced and board-certified in both internal medicine and gastroenterology and has received specialized medical training in gastrointestinal (GI) diseases. He is also trained in endoscopy, a diagnostic procedure that uses a flexible, lighted tube with a built-in video camera to examine the inside of the GI tract.

Health Services

  • Colorectal cancer screening including open access
  • Endoscopy including diagnostic, full, therapeutic upper endoscopy (EGD), Endoscopic Retrograde Cholangiopancreatography (ERCP), and capsule
  • Diagnosis and treatment of digestive disorders including: Irritable bowel syndrome (IBS), Inflammatory bowel disease (IBD), including Crohn’s disease and ulcerative colitis, diverticulitis, diverticulosis and ischemic bowel disease, celiac disease and food intolerances, heartburn and GERD, chronic vomiting and gastroparesis
  • Care for functional illness, such as constipation, diarrhea, vomiting, belching and flatulence
  • Peptic ulcer disease and Helicobacter pylori
  • Diagnosis and treatment of acute and chronic disorders such aspancreatitis, gallbladder disease, and appendicitis
  • Nutritional concerns including deficiencies as well as obesity Diagnosis and treatment of liver disorders including cirrhosis and nonalcoholic fatty liver disease
  • GI infections caused by viruses, bacteria, fungi and protozoa Viral hepatitis

Special Services

  • Endoscopy including capsule endoscopy
  • Colonoscopy
  • Endoscopic retrograde cholangiopancreatogram

Patients are seen at Kadlec Clinic Gastroenterology by referral.

Clinic Hours
Monday – Friday:   8 a.m. to 5 p.m.


Our Doctors: Gastroenterology

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Stacey Ann Deschamps ARNP

Nurse Practitioner - Gastroenterology


900 Stevens Drive
Suite 101
Richland WA, 99352
509-942-3180
509-783-7354

Map and Directions

Accepting New Patients

Randy Jay Geldmacher MD

Gastroenterologist


900 Stevens Drive
Suite 101
Richland WA, 99352
509-942-3180
509-783-7354

Map and Directions

Accepting New Patients

Peter Donald Maher MD

Gastroenterologist


900 Stevens Drive
Suite 101
Richland WA, 99352
509-942-3180
509-783-7354

Map and Directions

Accepting New Patients

Nichole Marie Sharp DNP-FNP

Nurse Practitioner - Gastroenterology


900 Stevens Drive
Suite 101
Richland WA, 99352
509-942-3180
509-783-7354

Map and Directions

Accepting New Patients

Romana Shehzadi MD

Gastroenterologist


900 Stevens Drive
Suite 101
Richland WA, 99352
509-942-3180
509-783-7354

Map and Directions

Accepting New Patients