Mark Douglas Williams, DMD
Dentist · Denton, TX
Mark Douglas Williams, DMD is a dentist with a practice address in Denton, Texas, and NPI 1699095679, issued on Jun 1, 2010. Check the license (Texas 25443, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Douglas Williams
- Credential
- DMD
- Primary taxonomy
- Dentist 122300000X
- License number
- 25443 TX
Self-reported in NPPES; status is on the state search - Practice location
- 3600 E Mckinney St, Denton, TX 76209
- Phone
- (940) 387-2442
- Enumerated
- Jun 1, 2010
- Record last updated
- Jun 1, 2010 (not updated in 16 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest dentist records → All 6,572 in Texas → Look up another NPI →
Also registered at 3600 E Mckinney St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Everett Evans, D.D.S.Dentist1407930050
- Adrienne Jennings, D.D.S.Dentist1073630372
- Hemaliben Patel, D.D.SDentist1760747091
Verify Mark Douglas Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license 25443Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average dentist in 2024
55 Medicare Part D claims for 41 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin32 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $18.84
1 payment: food and beverage; the largest payer was Dentsply Sirona Inc. The 31,974 providers of this specialty with any payment received $540.36 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.
Mark Douglas Williams among 6,572 dentist records in Texas
Mark Douglas Williams, DMD is one of 6,572 dentist records with a practice address in Texas. 64% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 38% of them.
- NPI issued2010 · 38% of these records are older, 58% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2010 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
40 dentist records list a practice address in Denton
They are 40 of the 2,554 NPPES records with a practice address in Denton, and 6,572 dentist records in Texas.
All 6,572 in Texas → Every provider in Denton → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Everett Evans, D.D.S.Denton, TX 762091407930050
- Adrienne Jennings, D.D.S.Denton, TX 762091073630372
- Hemaliben Patel, D.D.SDenton, TX 762091760747091
- Leena Alexander, D.D.S.Corinth, TX 762101144235532
- Precious BieniCorinth, TX 762101629601117
- Erika EideDenton, TX 762101093261638
- Daniel Fuller, DDSDenton, TX 762101174618284
- Unsil Keiser, DDSDenton, TX 762101285776591
Common questions
What is Mark Douglas Williams, DMD's NPI number?
Mark Douglas Williams, DMD's National Provider Identifier (NPI) is 1699095679, issued on Jun 1, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Mark Douglas Williams, DMD located?
The NPPES record lists a practice address at 3600 E Mckinney St, Denton, TX, 76209. Phone: (940) 387-2442. Providers update this record themselves, so call before visiting.
How can I verify Mark Douglas Williams, DMD's license?
NPPES lists Texas license number 25443, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Douglas Williams, DMD prescribe under Medicare Part D?
In 2024, Mark Douglas Williams, DMD had 55 Medicare Part D claims for 41 beneficiaries; the average among dentist prescribers was 86. Part D covers Medicare prescriptions 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. 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.