David Robert Riedel, MD
Gastroenterology Physician · Alton, IL
David Robert Riedel, MD is a gastroenterology physician with a practice address in Alton, Illinois, and NPI 1073505004, issued on Aug 16, 2005. Check the license (Illinois 036-060307, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- David Robert Riedel
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 036-060307 IL
Self-reported in NPPES; status is on the state search - Practice location
- 4 Memorial Dr Ste 230, Alton, IL 62002
- Phone
- (618) 463-7874
- Enumerated
- Aug 16, 2005
- Record last updated
- Mar 12, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (618) 463-7846
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 887 in Illinois → Look up another NPI →
Also registered at 4 Memorial Dr Ste 230
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Audrey Brennan, FNP-CNurse Practitioner1679231690
- Brandy Byrd, FNPNurse Practitioner1902217540
- Emily Cottrell, FNP-BCNurse Practitioner1295262459
- Kaycee Eyers, FNPFamily Nurse Practitioner1750818522
Verify David Robert Riedel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036-060307Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average gastroenterology physician in 2024
205 Medicare Part D claims for 63 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Pantoprazole Sodium38 claims
- Metoclopramide Hcl26 claims
- Esomeprazole Magnesium20 claims
- Mesalamine20 claims
- Omeprazole15 claims
- Cholestyramine11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
David Robert Riedel among 887 gastroenterology physician records in Illinois
David Robert Riedel, MD is one of 887 gastroenterology physician records with a practice address in Illinois. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 85% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 72% of these records are
- Record last updated2021 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Illinois
There are 887 gastroenterology physician records in Illinois.
All 887 in Illinois → Every provider in Alton → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Mark Allendorph, M.D.Alton, IL 620021922094002
- Ahmad Karadaghy, M.D.Alton, IL 620021619963063
- Khalid Naseer, MDAlton, IL 620021851341366
- Yixi Tu, MDAlton, IL 620021861854929
- Mei Huang, M.D.Edwardsville, IL 620251417972597
- David Lotsoff, M.D.Edwardsville, IL 620251205807328
- Karen Sein Ohn, MDGranite City, IL 620401518119536
- Mark Fedder, MDMaryville, IL 620621922009943
Common questions
What is David Robert Riedel, MD's NPI number?
David Robert Riedel, MD's National Provider Identifier (NPI) is 1073505004, issued on Aug 16, 2005. An NPI identifies a provider in billing; it is not a license.
Where is David Robert Riedel, MD located?
The NPPES record lists a practice address at 4 Memorial Dr Ste 230, Alton, IL, 62002. Phone: (618) 463-7874. Providers update this record themselves, so call before visiting.
How can I verify David Robert Riedel, MD's license?
NPPES lists Illinois license number 036-060307, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David Robert Riedel, MD prescribe under Medicare Part D?
In 2024, David Robert Riedel, MD had 205 Medicare Part D claims for 63 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.