NPPES file of Aug 9, 2026

John Frederick Leech, DDS

General Practice Dentistry · Mansfield, OH

John Frederick Leech, DDS is a general practice dentistry with a practice address in Mansfield, Ohio, and NPI 1487662714, issued on Aug 3, 2006. Check the license (Ohio 30 012604, as entered in NPPES) with the Ohio 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
1487662714
Name
John Frederick Leech
Credential
DDS
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
30 012604 OH
Self-reported in NPPES; status is on the state search
Practice location
630 Lexington Ave, Mansfield, OH 44907
Phone
(419) 756-1110
Enumerated
Aug 3, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(419) 756-1865
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 3,986 in Ohio → Look up another NPI →

Also registered at 630 Lexington Ave

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

  1. Timothy Bartholomew, DDSOral and Maxillofacial Surgery (Dentist)1306077656
  2. Edwin Farrar, D.D.S.Oral and Maxillofacial Surgery (Dentist)1841382728
  3. Jessica Gooden, DPTPhysical Therapist1265042774
  4. Michael Leech, DDSGeneral Practice Dentistry1124036470
  5. Allyson McCune, PT, DPTPhysical Therapist1811323181
  6. Samantha McDonald, DPTOrthopedic Physical Therapist1386380343

Verify John Frederick Leech in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Ohio board licenses this profession
    Search for license 30 012604    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 Ohio 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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Industry payments in 2024: $62.49

1 payment: gift; the largest payer was Ultradent Products Inc. The 41,669 providers of this specialty with any payment received $597.01 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. John Leech$62.49
  2. Specialty average$597.01

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

John Frederick Leech among 3,986 general practice dentistry records in Ohio

John Frederick Leech, DDS is one of 3,986 general practice dentistry records with a practice address in Ohio. 63% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.

  • NPI issued2006 · 4% of these records are older, 61% newer
  • In a Medicare fileYes · 63% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 74% 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 Ohio 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 Ohio

There are 3,986 general practice dentistry records in Ohio.

All 3,986 in Ohio → Every provider in Mansfield → General Practice Dentistry nationwide →

The 8 general practice dentistry records with the nearest ZIP codes

  1. Rose Abruzzi, D.D.S.Mansfield, OH 449071568665149
  2. Dina Ambrose, DDSMansfield, OH 449071154332757
  3. Terry Bartholomew, DDSMansfield, OH 449071326170853
  4. Andrew Basinger, D.D.S.Mansfield, OH 449071700934858
  5. Bruce Frasz, DDSMansfield, OH 449071275662900
  6. Denise Griffon, D.D.S.Mansfield, OH 449071538126198
  7. Kenneth Jones, DDSMansfield, OH 449071639108970
  8. Michael Leech, DDSMansfield, OH 449071124036470

Common questions

What is John Frederick Leech, DDS's NPI number?

John Frederick Leech, DDS's National Provider Identifier (NPI) is 1487662714, issued on Aug 3, 2006. An NPI identifies a provider in billing; it is not a license.

Where is John Frederick Leech, DDS located?

The NPPES record lists a practice address at 630 Lexington Ave, Mansfield, OH, 44907. Phone: (419) 756-1110. Providers update this record themselves, so call before visiting.

How can I verify John Frederick Leech, DDS's license?

NPPES lists Ohio license number 30 012604, as entered by the provider. Search the Ohio 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. Medicare files from data.cms.gov. 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.