Gregory Chann, D.M.D.
General Practice Dentistry · Wilton, CT
Gregory Chann, D.M.D. is a general practice dentistry with a practice address in Wilton, Connecticut, and NPI 1669488805, issued on Jul 31, 2006. Check the license (Connecticut 6167, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory Chann
- Credential
- D.M.D.
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 6167 CT
Self-reported in NPPES; status is on the state search - Practice location
- 400 Danbury RD, Wilton, CT 06897
- Phone
- (230) 762-8405
- Enumerated
- Jul 31, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 1,731 in Connecticut → Look up another NPI →
Verify Gregory Chann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 6167Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% fewer Medicare Part D claims than the average general practice dentistry in 2024
51 Medicare Part D claims for 37 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin28 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.
Gregory Chann among 1,731 general practice dentistry records in Connecticut
Gregory Chann, D.M.D. is one of 1,731 general practice dentistry records with a practice address in Connecticut. 63% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 69% newer
- In a Medicare fileYes · 63% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 80% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 general practice dentistry records list a practice address in Wilton
They are 11 of the 435 NPPES records with a practice address in Wilton, and 1,731 general practice dentistry records in Connecticut.
All 1,731 in Connecticut → Every provider in Wilton → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Dominick Agostin, D.D.S.Wilton, CT 068971609974047
- Robert Arbuckle, D.D.S.Wilton, CT 068971205954237
- James Aris, DMDWilton, CT 068971184702169
- Paul Keating, D.M.D.Wilton, CT 068971558390856
- Barry Kutner, DDSWilton, CT 068971013924190
- Daniel Latowicki, D.D.S.Wilton, CT 068971922129337
- Michael Maksymiuk, D.M.D.Wilton, CT 068971013131168
- William Schmid, D.M.D.Wilton, CT 068971407971013
Common questions
What is Gregory Chann, D.M.D.'s NPI number?
Gregory Chann, D.M.D.'s National Provider Identifier (NPI) is 1669488805, issued on Jul 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Chann, D.M.D. located?
The NPPES record lists a practice address at 400 Danbury RD, Wilton, CT, 06897. Phone: (230) 762-8405. Providers update this record themselves, so call before visiting.
How can I verify Gregory Chann, D.M.D.'s license?
NPPES lists Connecticut license number 6167, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory Chann, D.M.D. prescribe under Medicare Part D?
In 2024, Gregory Chann, D.M.D. had 51 Medicare Part D claims for 37 beneficiaries; the average among general practice dentistry prescribers was 83. 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.