Richard RiegelMD
Gastroenterology·Chesterfield, MO
Richard Riegel, MD is a Gastroenterology provider in Chesterfield, MO affiliated with 2 ambulatory surgery centers in MO, as of July 2026.
- NPI1669472700
- Registered2005
- Centers2
- StateMO
- Class of1991
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Ambulatory surgery centers
Centers whose service lines match this provider’s. Affiliations change; verify independently.
Education
Education on record as of August 2026.
Richard Riegel at a glance
- Provider
- Richard Riegel
- Credential
- MD
- Specialty
- Gastroenterology
- Procedures
- Gastroenterology CPT codes
- Location
- Chesterfield, MO
- Medical school
- University of Missouri, Columbia School of Medicine
- Graduated
- 1991
- NPI registered
- 2005
- NPI
- 1669472700
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does Richard Riegel practice?
Richard Riegel, MD is based in Chesterfield, MO and is affiliated with 2 ambulatory surgery centers: Mason Ridge Ambulatory Surgery Center Dba Gateway Endoscopy Center in Saint Louis, MO and St Lukes Surgery Center Of Chesterfield in Chesterfield, MO. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Richard Riegel's NPI number?
Richard Riegel's National Provider Identifier (NPI) is 1669472700, registered in 2005. Specialty on record: Gastroenterology; credential MD.
Where did Richard Riegel go to medical school?
Richard Riegel, MD attended University of Missouri, Columbia School of Medicine, graduating in 1991.
How many Gastroenterology providers in Missouri work at ambulatory surgery centers?
82 Gastroenterology surgeons and proceduralists in Missouri are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Richard Riegel among them. The Missouri Gastroenterology directory lists each one by city with credential, NPI, and center affiliations.
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