James Underwood
NPI 1447240494 · Gastroenterology Physician · Flowood, MS
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Underwood is a Gastroenterology Physician provider in Flowood, MS (NPI 1447240494).
Provider details
- NPI number
- 1447240494
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 15562 (MS)
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
1,366 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) |
|---|---|---|
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 231 | $228 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 175 | $58 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 133 | $57 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 104 | $110 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High RiskG0105 | 92 | $164 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 227 | 83 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 107 | 105 |
| Sodium Chloride/Nahco3/Kcl/Pegbrand: Peg 3350-Electrolyte | 97 | 91 |
| Pantoprazole Sodium | 67 | 18 |
| Sod Picosulf/Mag Ox/Citric Acbrand: Clenpiq | 52 | 51 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 50 | 50 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$128 across 5 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
- 2005-10-21
- Last updated
- 2017-09-21
Frequently asked questions
- What is James Underwood's NPI number?
- James Underwood's National Provider Identifier (NPI) is 1447240494, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Underwood's specialty?
- James Underwood is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is James Underwood located?
- James Underwood's practice location on file with NPPES is 2510 Lakeland Dr, Flowood, MS 39232-9513.
- What is James Underwood's phone number?
- The practice phone number listed in the NPPES registry for James Underwood is (601) 355-1234.
- Does James Underwood accept Medicare?
- James Underwood is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Underwood's NPI active?
- Yes — James Underwood's NPI (1447240494) is active in the NPPES registry as of the last update on 2017-09-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.