Thomas Michael Leonard, D.M.D.
General Practice Dentistry · Arlington, MA
Thomas Michael Leonard, D.M.D. is a general practice dentistry with a practice address in Arlington, Massachusetts, and NPI 1003817727, issued on Aug 3, 2005. Check the license (Massachusetts 12586, as entered in NPPES) with the Massachusetts board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Thomas Michael Leonard
- Credential
- D.M.D.
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 12586 MA
Self-reported in NPPES; status is on the state search - Practice location
- 366 Mass Ave, Arlington, MA 02474
- Phone
- (781) 646-8609
- Enumerated
- Aug 3, 2005
- Record last updated
- Jul 13, 2026
- Entity
- Type 1 · individual
Also registered at 366 Mass Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ulrike Dettling, M.A., L.M.F.T.Marriage & Family Therapist1447435631
Verify Thomas Michael Leonard in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 12586Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10 general practice dentistry records list a practice address in Arlington
They are 10 of the 974 NPPES records with a practice address in Arlington, and 3,489 general practice dentistry records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 10 in Arlington → All 3,489 in Massachusetts → Every provider in Arlington →
Other general practice dentistry records in Massachusetts
- Mark Aaron, DMDGreat Barrington, MA1902020902
- Heidi Aaronson, D.M.D.Wellesley, MA1134375652
- Jamil Abbasy, DMDSouthampton, MA1992988026
- Sama Abdul-Aziz, DMDBoston, MA1427543610
- Muhannad AbdulghaniBrockton, MA1326806654
- Noor AbdulkareemQuincy, MA1932809662
- Asma AbdullahShrewsbury, MA1225301237
- Abdulaziz Abdulwahed, BDSBoston, MA1730637414
- Sabahat Abernethy, DMD, CAGSAbington, MA1518089903
- Rana Abood, DMDBoston, MA1376660936
Common questions
What is Thomas Michael Leonard, D.M.D.'s NPI number?
Thomas Michael Leonard, D.M.D.'s National Provider Identifier (NPI) is 1003817727, issued on Aug 3, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Michael Leonard, D.M.D. located?
The NPPES record lists a practice address at 366 Mass Ave, Arlington, MA, 02474. Phone: (781) 646-8609. Providers update this record themselves, so call before visiting.
How can I verify Thomas Michael Leonard, D.M.D.'s license?
NPPES lists Massachusetts license number 12586, as entered by the provider. Search the Massachusetts 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.