John Mathis Barnett, MD
Radiation Oncology Physician · Tyler, TX
John Mathis Barnett, MD is a radiation oncology physician with a practice address in Tyler, Texas, and NPI 1538177217, issued on Aug 4, 2006. Check the license (Texas E4190, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Mathis Barnett
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- E4190 TX
Self-reported in NPPES; status is on the state search - Practice location
- 700 Olympic Plaza Cir, Tyler, TX 75701
- Phone
- (903) 262-3900
- Enumerated
- Aug 4, 2006
- Record last updated
- Aug 14, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (903) 262-3993
- Medicaid ID
- 132981504 TX
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 449 in Texas → Look up another NPI →
Also registered at 700 Olympic Plaza Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Mathis Barnett in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license E4190Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $62.80
3 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 3,275 providers of this specialty with any payment received $1,897.85 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.
John Mathis Barnett among 449 radiation oncology physician records in Texas
John Mathis Barnett, MD is one of 449 radiation oncology physician records with a practice address in Texas. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 52% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 78% of these records are
- Record last updated2013 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Texas
There are 449 radiation oncology physician records in Texas.
All 449 in Texas → Every provider in Tyler → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Bruce Ellerin, M.D.Tyler, TX 757011285635052
- Mark Saunders, MDTyler, TX 757021629010855
- Lewis Smith, MDTyler, TX 757081144380684
- Joseph Hodges, M.D.Longview, TX 756011144554577
- Bernard Taylor, MDLongview, TX 756011205878345
- James Wilder, MDPalestine, TX 758011043252901
- Charles Matthews, M.D.Texarkana, TX 755031689899676
- Hai Tran, M.D.Texarkana, TX 755031992794341
Common questions
What is John Mathis Barnett, MD's NPI number?
John Mathis Barnett, MD's National Provider Identifier (NPI) is 1538177217, issued on Aug 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Mathis Barnett, MD located?
The NPPES record lists a practice address at 700 Olympic Plaza Cir, Tyler, TX, 75701. Phone: (903) 262-3900. Providers update this record themselves, so call before visiting.
How can I verify John Mathis Barnett, MD's license?
NPPES lists Texas license number E4190, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
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.