Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Matthew Laviolette, M.D.
Surgery Physician in Milwaukee, WI · enumerated 2019.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1598310195
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Dr. Matthew Laviolette
Credential M.D.
Sex Male
Practice address Medical College of Wisconsin, 8701 Watertown Plank Rd., Surgical Oncology, Milwaukee, WI, 53226
Phone (414) 955-1777
Fax (414) 955-0197
Enumeration date Aug 9, 2019
Last updated in NPPES Aug 9, 2019
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD 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.
Frequently asked questions
Where does Matthew Laviolette practice?
The practice location on file with NPPES is in Milwaukee, WI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Matthew Laviolette?
The National Provider Identifier (NPI) for Matthew Laviolette is 1598310195, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-08-09.