Gregory Holman Duncan, DDS
Dentist · Greenville, TX
Gregory Holman Duncan, DDS is a dentist with a practice address in Greenville, Texas, and NPI 1033228101, issued on Aug 30, 2006. Check the license (Texas TX15493, as entered in NPPES) with the Texas board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Gregory Holman Duncan
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- License number
- TX15493 TX
Self-reported in NPPES; status is on the state search - Practice location
- 4613 Stonewall Street, Greenville, TX 75401
- Phone
- (903) 455-6075
- Enumerated
- Aug 30, 2006
- Record last updated
- Jan 20, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (903) 455-7589
- Entity
- Type 1 · individual
8 nearest dentist records → All 6,572 in Texas → Look up another NPI →
Verify Gregory Holman Duncan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license TX15493Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Gregory Holman Duncan among 6,572 dentist records in Texas
Gregory Holman Duncan, DDS 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 not. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 82% 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 updated2012 · 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).
19 dentist records list a practice address in Greenville
They are 19 of the 586 NPPES records with a practice address in Greenville, and 6,572 dentist records in Texas. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 6,572 in Texas → Every provider in Greenville → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Virginia HallGreenville, TX 754011255723169
- Steven RobisonGreenville, TX 754011689057226
- Ronald Weaks, D.D.S.Greenville, TX 754011508021957
- Michael Weaks, D.DSGreenville, TX 754011982088530
- John Barrett, DDSGreenville, TX 754021073670576
- Jackson Bean, D.D.S.Greenville, TX 754021861610545
- Megan ConlinGreenville, TX 754021639878861
- Gary Evans, DDSGreenville, TX 754021568555779
Common questions
What is Gregory Holman Duncan, DDS's NPI number?
Gregory Holman Duncan, DDS's National Provider Identifier (NPI) is 1033228101, issued on Aug 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Holman Duncan, DDS located?
The NPPES record lists a practice address at 4613 Stonewall Street, Greenville, TX, 75401. Phone: (903) 455-6075. Providers update this record themselves, so call before visiting.
How can I verify Gregory Holman Duncan, DDS's license?
NPPES lists Texas license number TX15493, as entered by the provider. Search the Texas 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.