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A Personal Approach to Digestive Healthcare

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About PostRx Healthcare - St. Louis Gastroenterologist

Empowering Patients and Prioritizing Relationships

Welcome to PostRx Healthcare. Our goal is simple:

  • to listen
  • to teach
  • to empower
  • to advocate
  • to heal

At PostRx Healthcare there is no intrusion in the patient-physician relationship because we do not accept insurance for our care. Keep insurance for emergencies and unexpected healthcare events/hospitalizations, but choose PostRx Healthcare in order to maintain health and wellness based on our model of personalized care. Create a healing relationship as you work to craft a treatment plan that involves diet, lifestyle, medications, and psychosocial support.

We look forward to meeting you and hope that you find value in our care model. And ultimately, through our collaborative effort we hope to improve your digestive health as well as your quality of life.

Meet Dr. Kreikemeier

We believe that active listening and human touch should be the foundation for personalized care.


Proactive, Personalized Medical Care


Records, labs, and medications review. Collaborative treatment plan creation. Phone follow-up at 2 weeks.


Routine Care

Review and update health history and treatment recommendations. Phone follow-up at 2 weeks.


Wellness Care Plan

Includes quarterly visits and enrollment ensures increased access


Procedures such as colonoscopy and endoscopy may be added as a service in the future but are not available through PostRx Healthcare at this time. Patients who need those exams will be referred.

PostRx Healthcare maintains relationships with surgeons, internists, and referring physicians in order to facilitate collaborative care.

We believe that truth and transparency create trust, and that trust can lead to lasting relationships as well as better care.

Meet Dr. Kreikemeier

Dr. Kreikemeier is passionate…about his family, his calling as a father and physician, and his faith. He enjoys people and celebrates relationships especially those with his patients. His motivation in creating this new practice was clarified during the pandemic where many of the dysfunctions of modern healthcare were clearly exposed. His personalized medical care model fits with his personality as well as his previous practice style where he, quite often, shared his cell phone with patients and family members with Crohn's disease or cancer. And, most importantly, Dr. Kreikemeier has been a patient in the broken healthcare system so is even more convicted to create solutions. Learn more about the direct care medical model that is innovating healthcare.

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"Your office was a breath of fresh air!"

- John D.

"I felt so listened to and cared for!"

- John D.

"Your work is so important and I feel so thankful to have gotten the chance to meet with you."

- John D.