NPPES file of Aug 9, 2026

William Clyde Osborn, D.M.D.

General Practice Dentistry · Mount Vernon, IL

William Clyde Osborn, D.M.D. is a general practice dentistry with a practice address in Mount Vernon, Illinois, and NPI 1639241672, issued on Nov 14, 2006. Check the license (Illinois 01901667-IL, as entered in NPPES) with the Illinois 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
1639241672
Name
William Clyde Osborn
Credential
D.M.D.
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
01901667-IL IL
Self-reported in NPPES; status is on the state search
Practice location
101 S 27TH St, Mount Vernon, IL 62864
Phone
(618) 244-2625
Enumerated
Nov 14, 2006
Record last updated
Jul 8, 2007 (not updated in 19 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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8 nearest general practice dentistry records → All 5,276 in Illinois → Look up another NPI →

Also registered at 101 S 27TH St

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

  1. Deborah Overoyen, DDSDentist1528236080

Verify William Clyde Osborn in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this profession
    Search for license 01901667-IL    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
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William Clyde Osborn among 5,276 general practice dentistry records in Illinois

William Clyde Osborn, D.M.D. is one of 5,276 general practice dentistry records with a practice address in Illinois. 64% 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 4% of them.

  • NPI issued2006 · 4% of these records are older, 68% newer
  • In a Medicare fileNo · 64% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 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 1223G0001X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

7 general practice dentistry records list a practice address in Mount Vernon

They are 7 of the 578 NPPES records with a practice address in Mount Vernon, and 5,276 general practice dentistry records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 5,276 in Illinois → Every provider in Mount Vernon → General Practice Dentistry nationwide →

The 8 general practice dentistry records with the nearest ZIP codes

  1. Michael Hiner, D.D.S.Mount Vernon, IL 628641265454508
  2. Sehun OhMount Vernon, IL 628641942613971
  3. Kathleen Renner, D.M.DMount Vernon, IL 628641326120445
  4. Arthur Ronat, DDSMount Vernon, IL 628641194879619
  5. Bruce Thackrey, DMDMount Vernon, IL 628641518914340
  6. Tyson Tinsley, D.M.D.Mount Vernon, IL 628641083748875
  7. George Fischer, DMDMount Carmel, IL 628631699842666
  8. James Henning, D.D.S.Mount Carmel, IL 628631649371865

Common questions

What is William Clyde Osborn, D.M.D.'s NPI number?

William Clyde Osborn, D.M.D.'s National Provider Identifier (NPI) is 1639241672, issued on Nov 14, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William Clyde Osborn, D.M.D. located?

The NPPES record lists a practice address at 101 S 27TH St, Mount Vernon, IL, 62864. Phone: (618) 244-2625. Providers update this record themselves, so call before visiting.

How can I verify William Clyde Osborn, D.M.D.'s license?

NPPES lists Illinois license number 01901667-IL, as entered by the provider. Search the Illinois 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.