James Roat, M.D.
NPI 1457331621 · Gastroenterology Physician · Sioux City, IA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Roat, M.D. is a Gastroenterology Physician provider in Sioux City, IA (NPI 1457331621).
Provider details
- NPI number
- 1457331621
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 23838 (IA)
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
499 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) |
|---|---|---|
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 89 | $92 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High RiskG0105 | 69 | $155 |
| Dilation of Esophagus43450 | 65 | $34 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 65 | $80 |
| Colorectal Cancer Screening; Colonoscopy on Individual Not Meeting Criteria for High RiskG0121 | 64 | $156 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 554 | 143 |
| Metoclopramide Hcl | 375 | 363 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 193 | 188 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 185 | 181 |
| Mesalamine | 52 | 11 |
| Cholestyramine (with Sugar)brand: Cholestyramine | 34 | — |
| Omeprazole |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$20 across 1 record (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
- 2006-01-22
- Last updated
- 2007-07-08
Frequently asked questions
- What is James Roat's NPI number?
- James Roat's National Provider Identifier (NPI) is 1457331621, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Roat's specialty?
- James Roat is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is James Roat located?
- James Roat's practice location on file with NPPES is 2910 Hamilton Blvd, Sioux City, IA 51104-2423.
- What is James Roat's phone number?
- The practice phone number listed in the NPPES registry for James Roat is (712) 252-1322.
- Does James Roat accept Medicare?
- James Roat is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Roat's NPI active?
- Yes — James Roat's NPI (1457331621) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.