Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Greg A. Lietz, PA
Physician Assistant in Hartford, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1548345762
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Registry record
Entity type Individual (Type 1)
Name Greg A. Lietz
Credential PA
Sex Male
Practice address 1640 E Sumner St, Hartford, WI, 53027
Phone (262) 670-4000
Enumeration date Oct 26, 2006
Last updated in NPPES Nov 13, 2023
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 2066 (WI) Primary
PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program.
About the PA credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 42895300 | 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 Greg Lietz?
The National Provider Identifier (NPI) for Greg Lietz is 1548345762, a Type 1 (individual) record in the CMS NPPES registry.
Where does Greg Lietz practice?
The practice location on file with NPPES is in Hartford, WI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Christopher Garvey Otolaryngology Physician · Hartford, WI NPI 1780679795 Michael Long Family Medicine Physician · Hartford, WI NPI 1053383646 Aurora Pharmacy, Inc. Community/Retail Pharmacy · Hartford, WI NPI 1538107842 Britta Braden Physician Assistant · Hartford, WI NPI 1083650709 James Bencivenga Occupational Medicine Physician · Hartford, WI NPI 1659304434 Megan Tkachuk Family Medicine Physician · Hartford, WI NPI 1790719086 Aurora Health Care Ventures, Inc. Eyewear Supplier · Hartford, WI NPI 1447270889 Scott Kenitz Optometrist · Hartford, WI NPI 1871516310
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-13.