Parent Page: Academic Departments id: 22555 Active Page: Facultyid:23541


Internal Medicine

Donald J. Kastens, MD

Associate Professor of Medicine
Director, GI Fellows Continuity Clinic
Director, Esophageal Function Laboratory (OU & VA)

COMD 7400
800 Stanton L Young Blvd
Oklahoma City, OK

405-271-5428 (Office)
405-271-5803 (Fax)

Dr. Kastens is a board certified gastroenterologist and an Associate Professor at the OU College of Medicine. He has a special interest in diagnosing and treating patients with esophageal motility disorders and Gastroesophageal Reflux Disease. Kastens completed a fellowship, residency and earned his medical degree at the OU College of Medicine.

Academic Section(s):

Digestive Diseases


University of Oklahoma College of Medicine
MD (1981)

Board Certification(s):

American Board of Internal Medicine 
Internal Medicine (1984)

American Board of Internal Medicine 
Gastroenterology (1987)


University of Oklahoma Health Sciences Center
Internal Medicine (1984)


University of Oklahoma Health Sciences Center
Gastroenterology (1986)


Bowman Gray School of Medicine, Winston Salem, NC
Esophageal Motility (1986)


American College of Gastroenterology, Fellow (ACG)

1989 - Present

American Society for Gastrointestinal Endoscopy (ASGE)

1989 - Present

American Gastroenterological Association

1986 - Present

American Medical Association (AMA)

1986 - 1988

Oklahoma County Medical Society

1986 - 1988

Oklahoma State Medical Society

1986 - 1988

Clinical/Research Interests:

  • Gastro-esophageal Reflux Disease
  • Motility Disorders
  • Colon cancer screening

Select Honors & Accomplishments:

  • Outstanding Dedication and Commitment to Excellence in the Education of Endoscopy Skills to Gastroenterology Fellows Teaching Award, GI Fellowship Program (2014-2020)
    Annual award voted on by the fellows]

  • Board of Governors Service Award 2016-2017, American College of Gastroenterology, October 15, 2017

  • Fellow, American College of Gastroenterology

  • Alpha Omega Alpha (1981)
  • Phi Beta Kappa (1977)

Select Publications:

Research Networking Profile

Grossen, A., Kastens, D. J., Salem, G. (2019). Metastatic Renal Cell Carcinoma to the Gastrointestinal Tract. Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association. PMID: 31499248. DOI: 10.1016/j.cgh.2019.08.051

Jacobs, B. A., Salem, G. A., Kastens, D. J. (2019). Black Esophagus: A Rare Cause of Upper Gastrointestinal Bleeding. Clinical Gastroenterology and Hepatology. PMID: 30876961. DOI: 10.1016/j.cgh.2019.02.046

Salem, G. A.*, Kastens, D. J. (2019). Double Pylorus: A Rare Complication of Peptic Ulcer Disease. Clin Gastroenterol Hepatol, 17(1), e1. PMID: 29246697. DOI: 10.1016/j.cgh.2017.12.01110

Syed, T., Farooqui, S., Tajammal, R., Mahmood, S., Kastens, D. J. (2018). Chilaiditi's Sign Associated with Acute Colonic Pseudo-obstruction: A Radiological Diagnosis. Cureus, 10(3), e2351. PMID: 29796363. DOI: 10.7759/cureus.2351

Syed, T. A., Salem, G., Kastens, D. J. (2017). Lower Gastrointestinal Bleeding Secondary to Intestinal Histoplasmosis in a Renal Transplant Patient. ACG Case Rep J, 4(e93). PMID: 28798941. DOI: 10.14309/crj.2017.93