John Douglas Simmons, M.D.
Diagnostic Radiology Physician · Knoxville, TN
John Douglas Simmons, M.D. is a diagnostic radiology physician with a practice address in Knoxville, Tennessee, and NPI 1881691228, issued on Jun 30, 2005. Check the license (Tennessee 14768, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- John Douglas Simmons
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- 14768 TN
Self-reported in NPPES; status is on the state search - Practice location
- 1112 E Weisgarber RD Ste 102, Knoxville, TN 37909
- Phone
- (865) 558-9862
- Enumerated
- Jun 30, 2005
- Record last updated
- Oct 21, 2022
- Fax
- (865) 584-3478
- Medicaid IDs
- 3038137 TN
3038138 TN - Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 968 in Tennessee → Look up another NPI →
Also registered at 1112 E Weisgarber RD Ste 102
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Douglas Simmons in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 14768Check 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: $26.62
1 payment: food and beverage; the largest payer was Takeda Pharmaceuticals U.S.A., Inc. The 8,048 providers of this specialty with any payment received $2,488.38 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 Douglas Simmons among 968 diagnostic radiology physician records in Tennessee
John Douglas Simmons, M.D. is one of 968 diagnostic radiology physician records with a practice address in Tennessee. 73% 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, 81% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2022 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
146 diagnostic radiology physician records list a practice address in Knoxville
They are 146 of the 14,339 NPPES records with a practice address in Knoxville, and 968 diagnostic radiology physician records in Tennessee.
All 968 in Tennessee → Every provider in Knoxville → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Lynn Barrett, M.D.Knoxville, TN 379091952307795
- Wayne Eberenz, M.D.Knoxville, TN 379091396741070
- Diane Edge, M.D.Knoxville, TN 379091730185414
- Andrew Evancho, M.D.Knoxville, TN 379091922004597
- Joe Johnson, M.D.Knoxville, TN 379091619974193
- Christine Kennedy, MDKnoxville, TN 379091871575977
- William McKissick, M.D.Knoxville, TN 379091063418648
- Dale Nichols, M.D.Knoxville, TN 379091770589350
Common questions
What is John Douglas Simmons, M.D.'s NPI number?
John Douglas Simmons, M.D.'s National Provider Identifier (NPI) is 1881691228, issued on Jun 30, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Douglas Simmons, M.D. located?
The NPPES record lists a practice address at 1112 E Weisgarber RD Ste 102, Knoxville, TN, 37909. Phone: (865) 558-9862. Providers update this record themselves, so call before visiting.
How can I verify John Douglas Simmons, M.D.'s license?
NPPES lists Tennessee license number 14768, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. 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.