NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. John Duffy Dewalt, D.O.

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Logan, OH · enumerated 2005 · practices at Southeastern Surgery.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1508869702

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Registry record

Entity type Individual (Type 1)
Name Dr. John Duffy Dewalt
Credential D.O.
Sex Male
Practice address Logan, OH, 43138
Phone (740) 385-1881
Fax (740) 385-1875
Enumeration date May 23, 2005
Last updated in NPPES Jan 13, 2016

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 34002686D (OH) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
1269034 Other OH BWC PROVIDER NUMBER
CD3781 Other OH MEDICARE RAILROAD
0365073 Medicaid OH -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for John Dewalt?
The National Provider Identifier (NPI) for John Dewalt is 1508869702, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Dewalt practice?
The practice location on file with NPPES is in Logan, OH. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-01-13.