NPPES file of Aug 9, 2026

John Thomas Corrigan, DDS

General Practice Dentistry · Bethesda, MD

John Thomas Corrigan, DDS is a general practice dentistry with a practice address in Bethesda, Maryland, and NPI 1629294814, issued on Apr 17, 2007. Check the license (Maryland 8600, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1629294814
Name
John Thomas Corrigan
Credential
DDS
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
8600 MD
Self-reported in NPPES; status is on the state search
Practice location
8218 Wisconsin Ave., #317, Bethesda, MD 20814
Phone
(301) 718-5471
Enumerated
Apr 17, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(301) 654-5369
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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Verify John Thomas Corrigan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Maryland board licenses this profession
    Search for license 8600
    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
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49% fewer Medicare Part D claims than the average general practice dentistry in 2024

42 Medicare Part D claims for 20 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.

  1. John Corrigan42
  2. Specialty average83

Most prescribed

  1. Amoxicillin22 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.

John Thomas Corrigan among 2,408 general practice dentistry records in Maryland

John Thomas Corrigan, DDS is one of 2,408 general practice dentistry records with a practice address in Maryland. 62% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 28% of them.

  • NPI issued2007 · 28% of these records are older, 45% newer
  • In a Medicare fileYes · 62% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 72% 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 Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

97 general practice dentistry records list a practice address in Bethesda

They are 97 of the 7,245 NPPES records with a practice address in Bethesda, and 2,408 general practice dentistry records in Maryland.

The 8 general practice dentistry records with the nearest ZIP codes

  1. Charles Broring, DDSBethesda, MD 208141447364302
  2. T A Danny Bui, DDSBethesda, MD 208141518075274
  3. April Castro, DDSBethesda, MD 208141821007147
  4. Reginald Cole, DDSBethesda, MD 208141023185485
  5. Yekta Dianatnejad, D.D.SBethesda, MD 208141881779791
  6. Timothy Dunn, DDS, PABethesda, MD 208141659380020
  7. Robert Herman, DDSBethesda, MD 208141063590487
  8. Spencer Hornstein, D.D.S.Bethesda, MD 208141679635494

Common questions

What is John Thomas Corrigan, DDS's NPI number?

John Thomas Corrigan, DDS's National Provider Identifier (NPI) is 1629294814, issued on Apr 17, 2007. An NPI identifies a provider in billing; it is not a license.

Where is John Thomas Corrigan, DDS located?

The NPPES record lists a practice address at 8218 Wisconsin Ave., #317, Bethesda, MD, 20814. Phone: (301) 718-5471. Providers update this record themselves, so call before visiting.

How can I verify John Thomas Corrigan, DDS's license?

NPPES lists Maryland license number 8600, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.

How much does John Thomas Corrigan, DDS prescribe under Medicare Part D?

In 2024, John Thomas Corrigan, DDS had 42 Medicare Part D claims for 20 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.