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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Patient comments (4)

The overall average patient rating of Dr. Aaron Greenspan is Good. Dr. Greenspan has been reviewed by 22 patients who have provided 4 comments. The rating is 3.5 out of 5 stars.

Patient Ratings
Ease of Appointment 3.5
Promptness 3.6
Courteous Staff 4.0
Accurate Diagnosis 3.5
Bedside Manner 3.5
Spends Time with Me 3.3
Follows Up After Visit 3.2

Specialties & Research

Dr. Aaron Greenspan, MD is board certified in Gastroenterology.

  • He has special expertise in 6 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Constipation
  • Diabetes
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Education & Awards

On-Time Doctor Award (2014)


Dr. Greenspan has 5 hospital affiliations:

  • Barnes Jewish Hospital 
  • Memorial Hospital 

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Additional Information
Dr. Aaron B Greenspan MD is a male Internist and practices in Gastroenterology.
Where does Dr. Aaron B. Greenspan practice?
Dr. Aaron Greenspan has 2 office locations.
Dr. Aaron Greenspan practices Gastroenterology near Belleville, IL.
Additional practice locations include: Saint Louis, MO.
See Belleville Gastroenterologists.