NPPES file of Aug 9, 2026

Trest Alan Underwood, DO

Internal Medicine Physician · Tupelo, MS

Trest Alan Underwood, DO is an internal medicine physician with a practice address in Tupelo, Mississippi, and NPI 1780259911, issued on May 20, 2021. Check the license (Mississippi T-4377, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1780259911
Name
Trest Alan Underwood
Credential
DO
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
T-4377 MS
Self-reported in NPPES; status is on the state search
Practice location
830 S Gloster St, Tupelo, MS 38801
Phone
(601) 486-3849
Enumerated
May 20, 2021
Record last updated
Oct 18, 2021 (not updated in 5 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 830 S Gloster St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Haritha Abbott, CRNACertified Registered Nurse Anesthetist1326699075
  2. Lauren Abel, CRNACertified Registered Nurse Anesthetist1003125873
  3. Patrick Abel, CRNACertified Registered Nurse Anesthetist1497064265
  4. Mai Abouzeid, MDStudent in an Organized Health Care Education/Training Program1881445013
  5. Becky Adams, CRNACertified Registered Nurse Anesthetist1245489947
  6. Robert AdamsCertified Registered Nurse Anesthetist1205443348

Verify Trest Alan Underwood in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
    Search for license T-4377
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Mississippi license search

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84% fewer Medicare Part D claims than the average internal medicine physician in 2024

520 Medicare Part D claims for 134 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.

  1. Trest Underwood520
  2. Specialty average3,176

Most prescribed

  1. Amlodipine Besylate36 claims
  2. Atorvastatin Calcium34 claims
  3. Rosuvastatin Calcium18 claims
  4. Losartan Potassium17 claims
  5. Gabapentin16 claims
  6. Omeprazole14 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.

Industry payments in 2024: $442.63

15 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Trest Underwood$442.63
  2. Specialty average$1,303.06

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Trest Alan Underwood among 972 internal medicine physician records in Mississippi

Trest Alan Underwood, DO is one of 972 internal medicine physician records with a practice address in Mississippi. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 75% of them.

  • NPI issued2021 · 75% of these records are older, 21% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileNo · 60% of these records are
  • Record last updated2021 · 52% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

52 internal medicine physician records list a practice address in Tupelo

They are 52 of the 2,315 NPPES records with a practice address in Tupelo, and 972 internal medicine physician records in Mississippi.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Timothy Albers, MDTupelo, MS 388011891767687
  2. James Brown, MDTupelo, MS 388011497728968
  3. Frank Fortenberry, MDTupelo, MS 388011811963408
  4. James Harvey, MDTupelo, MS 388011881660942
  5. Richard Hendrick, MDTupelo, MS 388011770559841
  6. Julian Loden, M.D.Tupelo, MS 388011932155538
  7. John Matthews, MDTupelo, MS 388011891754057
  8. Derreck Menefee, MDTupelo, MS 388011275502403

Common questions

What is Trest Alan Underwood, DO's NPI number?

Trest Alan Underwood, DO's National Provider Identifier (NPI) is 1780259911, issued on May 20, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Trest Alan Underwood, DO located?

The NPPES record lists a practice address at 830 S Gloster St, Tupelo, MS, 38801. Phone: (601) 486-3849. Providers update this record themselves, so call before visiting.

How can I verify Trest Alan Underwood, DO's license?

NPPES lists Mississippi license number T-4377, 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 Trest Alan Underwood, DO prescribe under Medicare Part D?

In 2024, Trest Alan Underwood, DO had 520 Medicare Part D claims for 134 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

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.