Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Gregory M Matzke, MD
Surgery Physician in Madison, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1326096546
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Gregory M Matzke
Credential MD
Sex Male
Practice address 700 S Park St, Dean St. Mary'S Outpatient Center, Madison, WI, 53715
Phone (608) 260-2900
Fax (608) 260-2976
Enumeration date May 4, 2006
Last updated in NPPES Dec 10, 2020
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1326096546 | Medicaid | WI | - |
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
What is the NPI number for Gregory Matzke?
The National Provider Identifier (NPI) for Gregory Matzke is 1326096546, a Type 1 (individual) record in the CMS NPPES registry.
Where does Gregory Matzke practice?
The practice location on file with NPPES is in Madison, WI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Marilyn Borst Surgery Physician · Madison, WI NPI 1134123003 Paul Gavins Physician Assistant · Madison, WI NPI 1952308272 Ssm Health Care of Wisconsin, Inc. General Acute Care Hospital · Madison, WI NPI 1184621211 Michael Zolinski Anesthesiology Physician · Madison, WI NPI 1821097593 Frederick Freitag Pain Medicine Physician · Madison, WI NPI 1386636272 Anand Mohan Critical Care Medicine (Internal Medicine) Physician · Madison, WI NPI 1427043058 Jeremi Olson Surgical Physician Assistant · Madison, WI NPI 1003803339 Steven Indra Emergency Medicine Physician · Madison, WI NPI 1922096692
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-10.