Dr. John L. Kniaz, D.O.


Education - Gastroenterology

Medical Degree

  • Philadelphia College of Osteopathic Medicine


  •  St. Michael's Medical Center, Newark, New Jersey

Gastroenterology Fellowship

  •  Yale University School of Medicine, New Haven Connecticut

Postdoctoral Fellow

  • Yale University School of Medicine, Liver Disease Unit, West Haven, Connecticut.  


  • Gastroenterology
  • Internal Medicine

Awards, Honors, & Recognition

  • CMS Meaningful Use Stage 1 
  • Certification AthenaClinicals EHR, Athenahealth, Inc, 2013 

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Awards from Vitals

On-Time Doctor Award (2015, 2016, 2018)


 Vitals On-Time + Promptness Award recognizes doctors with consistent high ratings for timeliness of appointments. The honor is granted based on a physician's overall and promptness scores. 

Patients' Choice Award (2015, 2018)


 Patients' Choice recognition reflects the difference a particular physician has made in the lives of his/her patients. The honor is bestowed to physicians who have received near perfect scores, as voted by patients. 

Compassionate Doctor Recognition (2015, 2016)


 Compassionate Doctor certification is granted to physicians who treat their patients with the utmost kindness. The honor is granted based on a physician's overall and bedside manner scores. 

Our Locations

  Primary Office:  9731 Prairie Avenue, Highland, IN 46322 

Winfield Woods: 9150 E.  109th Ave., Ste 2D, Crown Point, IN 4630 

Marcotte Medical: 16000 W.101st Avenue, Dyer IN 46311 

Leetsma Healthcare : 519 N. Halleck St. DeMotte IN 46310 

Ph: (219) 922-4900

Fax: (219) 836-9922