Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Charles Hauwiller, DMD

Dentist in Montgomery, IL · enumerated 2006.

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

National Provider Identifier

1427126028

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Registry record

Entity type Individual (Type 1)

Name Dr. John Charles Hauwiller

Credential DMD

Sex Male

Practice address 6 Barclay Ct, Montgomery, IL, 60538

Phone (630) 801-7657

Enumeration date Dec 1, 2006

Last updated in NPPES Oct 9, 2011

Taxonomy & licenses

122300000X Dentist Dental Providers · License 019018254 (IL) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

Other identifiers

Identifier	Type	State	Issuer
13812	Other	IL	BCBS

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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify John Hauwiller's NPI record?

Cross-check NPI 1427126028 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1427126028 active?

Yes, as of the latest NPPES snapshot, NPI 1427126028 is active (record last updated 2011-10-09).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-09.