James A. Underwood
Gastroenterology Physician · Flowood, MS
James A. Underwood is a gastroenterology physician with a practice address in Flowood, Mississippi, and NPI 1447240494, issued on Oct 21, 2005. Check the license (Mississippi 15562, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- James A. Underwood
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 15562 MS
Self-reported in NPPES; status is on the state search - Practice location
- 2510 Lakeland Dr, Flowood, MS 39232
- Phone
- (601) 355-1234
- Enumerated
- Oct 21, 2005
- Record last updated
- Sep 21, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (601) 326-3559
- Medicaid ID
- 00123762 MS
- Medicare enrollment
- Enrolled (PECOS I20100818000370); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 128 in Mississippi → Look up another NPI →
Also registered at 2510 Lakeland Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Richard Benson, CRNACertified Registered Nurse Anesthetist1962662825
- Brandi Betterton, CRNACertified Registered Nurse Anesthetist1265601934
- Stewart Boyd, M.D.Gastroenterology Physician1194954578
- Donald Brannan, M.D.Gastroenterology Physician1568533198
- Alexandra Brown, M.D.Anatomic Pathology & Clinical Pathology Physician1669640850
- Keith Brown, M.D.Anatomic Pathology & Clinical Pathology Physician1376710756
Verify James A. Underwood in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
Search for license 15562Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% more Medicare Part D claims than the average gastroenterology physician in 2024
1,113 Medicare Part D claims for 553 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Omeprazole227 claims
- Gavilyte-C107 claims
- Peg 3350-Electrolyte97 claims
- Pantoprazole Sodium67 claims
- Clenpiq52 claims
- Peg-3350 And Electrolytes50 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $128.44
5 payments; by number, the most common kind was food and beverage; the largest payer was Celgene Corporation. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
3 hospitals and group practices
- Billings ClinicBillings, MT · Acute Care Hospitals4 of 5 stars
- Gastrointestinal Associates PAFlowood, MS
- St. Dominic Medical Associates LLCMadison, MS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
James A. Underwood among 128 gastroenterology physician records in Mississippi
James A. Underwood is one of 128 gastroenterology physician records with a practice address in Mississippi. 87% 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, 75% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated1995 · median 1998 among the 102 with a school on file
- Record last updated2017 · 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 Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
21 gastroenterology physician records list a practice address in Flowood
They are 21 of the 972 NPPES records with a practice address in Flowood, and 128 gastroenterology physician records in Mississippi.
All 128 in Mississippi → Every provider in Flowood → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Donald Brannan, M.D.Flowood, MS 392321568533198
- Shirley Donelson, M.D.Flowood, MS 392321669543120
- Pierce Dotherow, MDFlowood, MS 392321346238615
- Charles Hall, M.D.Flowood, MS 392321568534832
- Reed Hogan, MDFlowood, MS 392321023006293
- Ronald Kotfila, MDFlowood, MS 392321942298120
- Makau Lee, M.D.Flowood, MS 392321093887259
- Paul Milner, MDFlowood, MS 392321356339782
Common questions
What is James A. Underwood's NPI number?
James A. Underwood's National Provider Identifier (NPI) is 1447240494, issued on Oct 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is James A. Underwood located?
The NPPES record lists a practice address at 2510 Lakeland Dr, Flowood, MS, 39232. Phone: (601) 355-1234. Providers update this record themselves, so call before visiting.
How can I verify James A. Underwood's license?
NPPES lists Mississippi license number 15562, as entered by the provider. Search the Mississippi State Board of Medical Licensure at https://www.msbml.ms.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James A. Underwood prescribe under Medicare Part D?
In 2024, James A. Underwood had 1,113 Medicare Part D claims for 553 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is James A. Underwood's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.