NPPES file of Aug 9, 2026

Thomas W. Corwin, D.D.S.

General Practice Dentistry · Portland, ME

Thomas W. Corwin, D.D.S. is a general practice dentistry with a practice address in Portland, Maine, and NPI 1639376403, issued on Jun 27, 2007. Check the license (Maine 3306, as entered in NPPES) with the Maine board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1639376403
Name
Thomas W. Corwin
Credential
D.D.S.
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
3306 ME
Self-reported in NPPES; status is on the state search
Practice location
650 Brighton Ave, Portland, ME 04102
Phone
(207) 773-6331
Enumerated
Jun 27, 2007
Record last updated
Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(207) 773-3701
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest general practice dentistry records → All 519 in Maine → Look up another NPI →

Also registered at 650 Brighton Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Scott Burke, D.M.D.General Practice Dentistry1417154287
  2. Dana Guth, LCPC-CMental Health Counselor1134078256
  3. Jane McNally, DOInternal Medicine Physician1790890440
  4. Leighton Philbrick, D.M.D.General Practice Dentistry1295932069
  5. Jamie Raymond, D.C.Chiropractor1801824800
  6. Drew Sigman, DMDDentist1124694963

Verify Thomas W. Corwin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Maine board licenses this profession
    Search for license 3306    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Maine license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Thomas W. Corwin among 519 general practice dentistry records in Maine

Thomas W. Corwin, D.D.S. is one of 519 general practice dentistry records with a practice address in Maine. 55% 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 2007, is newer than 36% of them.

  • NPI issued2007 · 36% of these records are older, 45% newer
  • In a Medicare fileNo · 55% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 68% 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 Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

General Practice Dentistry providers in Maine

There are 519 general practice dentistry records in Maine. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 519 in Maine → Every provider in Portland → General Practice Dentistry nationwide →

The 8 general practice dentistry records with the nearest ZIP codes

  1. Leonard Brennan, DMDPortland, ME 041021588844724
  2. Scott Burke, D.M.D.Portland, ME 041021417154287
  3. Jeffrey Finegold, D.M.D.Portland, ME 041021497722896
  4. Clifton Hodges, DDSPortland, ME 041021730345752
  5. Jason Kassir, DMDPortland, ME 041021558431080
  6. David Kerr, D.D.S.Portland, ME 041021205858644
  7. James Martin, DMDPortland, ME 041021629325675
  8. Alex Mazurenko, DMDPortland, ME 041021962591461

Common questions

What is Thomas W. Corwin, D.D.S.'s NPI number?

Thomas W. Corwin, D.D.S.'s National Provider Identifier (NPI) is 1639376403, issued on Jun 27, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Thomas W. Corwin, D.D.S. located?

The NPPES record lists a practice address at 650 Brighton Ave, Portland, ME, 04102. Phone: (207) 773-6331. Providers update this record themselves, so call before visiting.

How can I verify Thomas W. Corwin, D.D.S.'s license?

NPPES lists Maine license number 3306, as entered by the provider. Search the Maine 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.