Michael John Mack, D.D.S.
General Practice Dentistry · Cos Cob, CT
Michael John Mack, D.D.S. is a general practice dentistry with a practice address in Cos Cob, Connecticut, and NPI 1508952375, issued on Oct 5, 2006. Check the license (Connecticut 005247, as entered in NPPES) with the Connecticut board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Michael John Mack
- Credential
- D.D.S.
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 005247 CT
Self-reported in NPPES; status is on the state search - Practice location
- 40 E. Putnam Ave., Cos Cob, CT 06807
- Phone
- (203) 661-2279
- Enumerated
- Oct 5, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (203) 869-2261
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 1,731 in Connecticut → Look up another NPI →
Verify Michael John Mack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 005247Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Michael John Mack among 1,731 general practice dentistry records in Connecticut
Michael John Mack, D.D.S. 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 not. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 69% newer
- In a Medicare fileNo · 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).
8 general practice dentistry records list a practice address in Cos Cob
They are 8 of the 125 NPPES records with a practice address in Cos Cob, and 1,731 general practice dentistry records in Connecticut. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,731 in Connecticut → Every provider in Cos Cob → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Robert Ailleo, D.M.D.Cos Cob, CT 068071285857573
- Cindy Chagas, DMDCos Cob, CT 068071366907420
- Ehud Oppenheimer, D.M.DCos Cob, CT 068071760698286
- Stephen Scott, D.D.S.Cos Cob, CT 068071740398007
- Sean Sutton, D.D.S.Cos Cob, CT 068071538666573
- Kenneth Temple, DDSCos Cob, CT 068071093920803
- Masis Yeterian, D.M.DCos Cob, CT 068071265668362
- Diane Bastiani, D.M.D.Brookfield, CT 068041083834881
Common questions
What is Michael John Mack, D.D.S.'s NPI number?
Michael John Mack, D.D.S.'s National Provider Identifier (NPI) is 1508952375, issued on Oct 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael John Mack, D.D.S. located?
The NPPES record lists a practice address at 40 E. Putnam Ave., Cos Cob, CT, 06807. Phone: (203) 661-2279. Providers update this record themselves, so call before visiting.
How can I verify Michael John Mack, D.D.S.'s license?
NPPES lists Connecticut license number 005247, as entered by the provider. Search the Connecticut 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.