Thomas A. Klem, DDS
General Practice Dentistry · Waterbury, CT
Thomas A. Klem, DDS is a general practice dentistry with a practice address in Waterbury, Connecticut, and NPI 1548283740, issued on Jul 26, 2006. Check the license (Connecticut 4391, 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
- Thomas A. Klem
- Credential
- DDS
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 4391 CT
Self-reported in NPPES; status is on the state search - Practice location
- 1147 W Main St, Waterbury, CT 06708
- Phone
- (203) 755-5641
- Enumerated
- Jul 26, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (203) 755-1675
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 1,731 in Connecticut → Look up another NPI →
Also registered at 1147 W Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Raya Aleksieva, DMDGeneral Practice Dentistry1487053419
- Michael Balfour, D.D.S.Dentist1962797191
- Terence Hickey, DMDGeneral Practice Dentistry1598789729
Verify Thomas A. Klem in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 4391Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Thomas A. Klem among 1,731 general practice dentistry records in Connecticut
Thomas A. Klem, DDS 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).
50 general practice dentistry records list a practice address in Waterbury
They are 50 of the 3,148 NPPES records with a practice address in Waterbury, 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 Waterbury → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Carl Bender, DDSWaterbury, CT 067081437203643
- Paul Czarzasty, D.M.D.Waterbury, CT 067081346364460
- Robert George, DMDWaterbury, CT 067081922153956
- Terence Hickey, DMDWaterbury, CT 067081598789729
- Louis Juliano, D.D.S.Waterbury, CT 067081326102674
- Michael Mandino, D.D.S.Waterbury, CT 067081144384728
- Allen Massicotte, DDSWaterbury, CT 067081487730297
- Thomas McCarthy, DDSWaterbury, CT 067081003018672
Common questions
What is Thomas A. Klem, DDS's NPI number?
Thomas A. Klem, DDS's National Provider Identifier (NPI) is 1548283740, issued on Jul 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas A. Klem, DDS located?
The NPPES record lists a practice address at 1147 W Main St, Waterbury, CT, 06708. Phone: (203) 755-5641. Providers update this record themselves, so call before visiting.
How can I verify Thomas A. Klem, DDS's license?
NPPES lists Connecticut license number 4391, 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.