Quick answers
- Which hospitals does James Underwood work at?
- Medicare's official clinician data lists James Underwood at 4 hospitals: Billings Clinic Hospital, Merit Health River Oaks, S E Lackey Memorial Hospital and St Dominic-Jackson Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James Underwood see patients?
- Medicare's clinician data lists 5 practice locations, including Madison, MS, Flowood, MS and Billings, MT. Call before your visit to confirm the address.
- What is James Underwood's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does James Underwood accept Medicare assignment?
- Yes. Medicare's clinician data says James Underwood accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for James Underwood?
- (406) 238-2500, as listed in official Medicare / NPI Registry data.
- What is James Underwood's NPI number?
- 1447240494. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James Underwood works
Medicare's Facility Affiliation Data lists James Underwood at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Billings Clinic HospitalBillings, MT · Acute Care Hospital · CCN 270004
- Merit Health River OaksFlowood, MS · Acute Care Hospital · CCN 250138
- S E Lackey Memorial HospitalForest, MS · Critical Access Hospital · CCN 251300
- St Dominic-Jackson Memorial HospitalJackson, MS · Acute Care Hospital · CCN 250048
Practice locations
Addresses where James Underwood is enrolled with Medicare (CMS data updated 2026-10-02).
- 106 Highland WayMadison, MS 39110
- 106 Highland Way, Suite 101Madison, MS 39110
- 2510 Lakeland DrFlowood, MS 39232
- 801 N 29th StBillings, MT 59101 (406) 238‑2500
- 969 Lakeland DrJackson, MS 39216
Group practices
Medicare enrollment lists James Underwood as a member of these groups (CMS data updated 2026-10-02).
- Billings Clinic Specialty Supplies and Services, LLC824 clinicians in the group
- St. Dominic Medical Associates LLC132 clinicians in the group
- Gastrointestinal Associates PA46 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Madison
Clinicians with the same Medicare primary specialty in Madison, MS — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1995 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1447240494 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians