Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Jacob Kussmaul Jr., D.D.S.

Endodontics in Dyer, IN · enumerated 2007 · practices at Illiana Endodontics, P.C..

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

National Provider Identifier

1811011158

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Registry record

Entity type Individual (Type 1)

Name Dr. John Jacob Kussmaul Jr.

Credential D.D.S.

Sex Male

Practice address 934 Richard Rd, Dyer, IN, 46311

Phone (219) 865-9790

Fax (219) 865-9792

Enumeration date Mar 19, 2007

Last updated in NPPES Nov 30, 2009

Taxonomy & licenses

1223E0200X Endodontics Dental Providers · License 12007811A (IN) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

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 specialty is John Kussmaul?

John Kussmaul is registered in NPPES with the primary taxonomy of Endodontics. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Michael Mintz Endodontics · Dyer, IN NPI 1598848715 Illiana Endodontics, P.C. Endodontics · Dyer, IN NPI 1912070228

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-11-30.