Richard Riegel, MD
NPI 1669472700 · Gastroenterology Physician · Chesterfield, MO
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Richard Riegel, MD is a Gastroenterology Physician provider in Chesterfield, MO (NPI 1669472700).
Provider details
- NPI number
- 1669472700
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 105536 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,506 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 390 | $34 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 171 | $243 |
| Chronic Care Management Services for Two Or More Chronic Conditions, Additional 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99439 | 146 | $46 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 98 | $122 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 97 | $88 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 326 | 105 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 186 | 184 |
| Famotidine | 94 | 33 |
| Omeprazole | 91 | 37 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 68 | 66 |
| Sucralfate | 47 | 16 |
| Dicyclomine Hcl | 41 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$73 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-07-29
- Last updated
- 2017-04-13
Frequently asked questions
- What is Richard Riegel's NPI number?
- Richard Riegel's National Provider Identifier (NPI) is 1669472700, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Richard Riegel's specialty?
- Richard Riegel is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Richard Riegel located?
- Richard Riegel's practice location on file with NPPES is 121 Saint Lukes Center Dr, Chesterfield, MO 63017-3518.
- What is Richard Riegel's phone number?
- The practice phone number listed in the NPPES registry for Richard Riegel is (314) 529-4900.
- Does Richard Riegel accept Medicare?
- Richard Riegel is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Richard Riegel's NPI active?
- Yes — Richard Riegel's NPI (1669472700) is active in the NPPES registry as of the last update on 2017-04-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.