NPPES file of Aug 9, 2026

John A. Diddle, DDS, MS

Orthodontics and Dentofacial Orthopedics Dentistry · Knoxville, TN

John A. Diddle, DDS, MS is an orthodontics and dentofacial orthopedics dentistry with a practice address in Knoxville, Tennessee, and NPI 1558385872, issued on Jul 27, 2006. Check the license (Tennessee DS 2753, as entered in NPPES) with the Tennessee board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1558385872
Name
John A. Diddle
Credential
DDS, MS
Primary taxonomy
Orthodontics and Dentofacial Orthopedics Dentistry 1223X0400X
License number
DS 2753 TN
Self-reported in NPPES; status is on the state search
Practice location
9220 Dutchtown Road, Knoxville, TN 37923
Phone
(865) 693-6561
Enumerated
Jul 27, 2006
Record last updated
Jan 13, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(865) 693-0522
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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8 nearest orthodontics and dentofacial orthopedics dentistry records → All 245 in Tennessee → Look up another NPI →

Verify John A. Diddle in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Tennessee board licenses this profession
    Search for license DS 2753    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
Find the Tennessee license search

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John A. Diddle among 245 orthodontics and dentofacial orthopedics dentistry records in Tennessee

John A. Diddle, DDS, MS is one of 245 orthodontics and dentofacial orthopedics dentistry records with a practice address in Tennessee. 60% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 8% of them.

  • NPI issued2006 · 8% of these records are older, 66% newer
  • In a Medicare fileNo · 60% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2012 · 75% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223X0400X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthodontics and Dentofacial Orthopedics Dentistry providers in Tennessee

There are 245 orthodontics and dentofacial orthopedics dentistry records in Tennessee. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 245 in Tennessee → Every provider in Knoxville → Orthodontics and Dentofacial Orthopedics Dentistry nationwide →

The 8 orthodontics and dentofacial orthopedics dentistry records with the nearest ZIP codes

  1. Louis Browning, D.D.S.Knoxville, TN 379231255404000
  2. Allen Langford, DDS, MDSKnoxville, TN 379221669447868
  3. Jordan Ringer, DMD, MSDKnoxville, TN 379221043093891
  4. Robert Turner, DDS MDSKnoxville, TN 379221659566354
  5. Samuel Eddy, D.D.S.Knoxville, TN 379201467783787
  6. Evan Agnetta, DDS, MSKnoxville, TN 379191013523703
  7. Richard Bowles, D.D.S.M.S.Knoxville, TN 379191295830198
  8. Kristin Knierim, D.D.S., M.S.D.Knoxville, TN 379191215039250

Common questions

What is John A. Diddle, DDS, MS's NPI number?

John A. Diddle, DDS, MS's National Provider Identifier (NPI) is 1558385872, issued on Jul 27, 2006. An NPI identifies a provider in billing; it is not a license.

Where is John A. Diddle, DDS, MS located?

The NPPES record lists a practice address at 9220 Dutchtown Road, Knoxville, TN, 37923. Phone: (865) 693-6561. Providers update this record themselves, so call before visiting.

How can I verify John A. Diddle, DDS, MS's license?

NPPES lists Tennessee license number DS 2753, as entered by the provider. Search the Tennessee board that licenses this profession; the NPPES record confirms identity 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.