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Edit this profileDavid R. Riedel, MD is a healthcare provider in Alton, IL specializing in gastroenterology. According to Medicare claims data, David cared for 68 Medicare patients across 68 services. The services billed most often include colorectal cancer screening; colonoscopy on individual at high risk, removal of polyps or growths of large bowel using an endoscope with mechanical snare, and colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk. This provider record is associated with NPI 1073505004.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
4 MEMORIAL DR STE 230
Alton, IL 62002
3550 College Ave Suite B
Alton, IL 62002
Within Gastroenterology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Most searched conditions
Biliary and pancreas
Colon and anorectal
Esophagus and swallowing
Functional bowel and motility
Liver
Stomach and duodenum
Bowel & Colon
Digestive Symptoms
Gallbladder & Bile Ducts
Most searched procedures
Lower endoscopy
Upper endoscopy
Capsule and physiology testing
Diagnostic Testing
Liver procedures
Treatments
68 services · 68 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
19 | Less often than most peers in Gastroenterology |
| Colorectal cancer screening; colonoscopy on individual at high risk | Billing code | G0105 |
33 | More often than most peers in Gastroenterology |
| Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | Billing code | G0121 |
16 | As often as other peers in Gastroenterology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Riedel is a gastroenterologist in Alton, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Dr. Riedel is listed at 4 Memorial Dr Ste 230, Alton, IL 62002. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (618) 463-7874. Contact the office directly to confirm availability and scheduling.
NPI registry
Dr. Riedel's National Provider Identifier is 1073505004. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dr. Riedel has 21+ years experience. Registered with an NPI since 2005. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
According to Medicare billing data, Dr. Riedel performs procedures including removal of polyps or growths of large bowel using an endoscope with mechanical snare. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Riedel. If this is you, claiming it is free.
Guide.md
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