Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Joseph Montreuil

General Practice Dentistry in Round Rock, TX · enumerated 2006 · practices at Round Rock Childrens Therapy Center.

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

National Provider Identifier

1215947924

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Registry record

Entity type Individual (Type 1)

Name Dr. William Joseph Montreuil

Sex Male

Practice address 901 Round Rock Ave, Suite 102, Round Rock, TX, 78681

Phone (512) 246-9080

Fax (512) 246-2219

Enumeration date Aug 8, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 22004 (TX) Primary

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 William Montreuil?

The National Provider Identifier (NPI) for William Montreuil is 1215947924, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Montreuil practice?

The practice location on file with NPPES is in Round Rock, TX. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Edward Teel Chiropractor · Round Rock, TX NPI 1578780862 April Geary Occupational Therapist · Round Rock, TX NPI 1083910798 Rebecca Paez Occupational Therapist · Round Rock, TX NPI 1801227517 Round Rock Childrens Therapy Center Speech-Language Assistant · Round Rock, TX NPI 1801342324

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.