Mark N. Williams, DMD
General Practice Dentistry · Mahomet, IL
Mark N. Williams, DMD is a general practice dentistry with a practice address in Mahomet, Illinois, and NPI 1821105867, issued on Aug 24, 2006. Check the license (Illinois 19-16261, 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.
- Name
- Mark N. Williams
- Credential
- DMD
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 19-16261 IL
Self-reported in NPPES; status is on the state search - Practice location
- Eastwood Drive, Mahomet, IL 61853
- Phone
- (217) 586-3535
- Enumerated
- Aug 24, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (217) 586-3586
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 5,276 in Illinois → Look up another NPI →
Verify Mark N. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 19-16261Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mark N. Williams among 5,276 general practice dentistry records in Illinois
Mark N. Williams, DMD 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).
5 general practice dentistry records list a practice address in Mahomet
They are 5 of the 139 NPPES records with a practice address in Mahomet, 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 Mahomet → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Galen Dale, D.D.S.Mahomet, IL 618531376566026
- Sirisha Gogineni, DDSMahomet, IL 618531194009142
- John Karich, DMDMahomet, IL 618531861547515
- Alexandro Martinez, DMDMahomet, IL 618531376389619
- Mark Hudson, D.M.D.Monticello, IL 618561053459735
- Laura Schall, DMDMonticello, IL 618561063076016
- Mark Faught, DDSRantoul, IL 618661942204201
- Arthur Hess, D.M.D.Rantoul, IL 618661235294117
Common questions
What is Mark N. Williams, DMD's NPI number?
Mark N. Williams, DMD's National Provider Identifier (NPI) is 1821105867, issued on Aug 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark N. Williams, DMD located?
The NPPES record lists a practice address at Eastwood Drive, Mahomet, IL, 61853. Phone: (217) 586-3535. Providers update this record themselves, so call before visiting.
How can I verify Mark N. Williams, DMD's license?
NPPES lists Illinois license number 19-16261, 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.
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.