Greg A. Lietz, PA
Physician Assistant · Hartford, WI
Greg A. Lietz, PA is a physician assistant with a practice address in Hartford, Wisconsin, and NPI 1548345762, issued on Oct 26, 2006. Check the license (Wisconsin 2066, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Greg A. Lietz
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 2066 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1640 E Sumner St, Hartford, WI 53027
- Phone
- (262) 670-4000
- Enumerated
- Oct 26, 2006
- Record last updated
- Nov 13, 2023
- Medicaid ID
- 42895300 WI
- Medicare enrollment
- Enrolled (PECOS I20061120000377); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,475 in Wisconsin → Look up another NPI →
Also registered at 1640 E Sumner St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Greg A. Lietz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 2066Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average physician assistant in 2024
292 Medicare Part D claims for 158 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 166 claims were for opioids.
Most prescribed
- Oxycodone Hcl84 claims
- Hydrocodone-Acetaminophen56 claims
- Tizanidine Hcl40 claims
- Gabapentin25 claims
- Tramadol Hcl17 claims
- Cyclobenzaprine Hcl14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Aurora Advanced Healthcare, Inc.Hartford, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Greg A. Lietz among 3,475 physician assistant records in Wisconsin
Greg A. Lietz, PA is one of 3,475 physician assistant records with a practice address in Wisconsin. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 76% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2006 · median 2016 among the 2,491 with a school on file
- Record last updated2023 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 physician assistant records list a practice address in Hartford
They are 16 of the 269 NPPES records with a practice address in Hartford, and 3,475 physician assistant records in Wisconsin.
All 3,475 in Wisconsin → Every provider in Hartford → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Andrew Androshie, PAHartford, WI 530271750930301
- Britta Braden, PAHartford, WI 530271083650709
- Lauren Carlson, PA-CHartford, WI 530271891147591
- Joel JrolfHartford, WI 530271851473680
- Karen Montag, PA-CHartford, WI 530271770690281
- Rachelle Parker, PA-CHartford, WI 530271558969568
- Joshua Perry, PA-CHartford, WI 530271114640455
- Christine Philipps, PA-CHartford, WI 530271922393867
Common questions
What is Greg A. Lietz, PA's NPI number?
Greg A. Lietz, PA's National Provider Identifier (NPI) is 1548345762, issued on Oct 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Greg A. Lietz, PA located?
The NPPES record lists a practice address at 1640 E Sumner St, Hartford, WI, 53027. Phone: (262) 670-4000. Providers update this record themselves, so call before visiting.
How can I verify Greg A. Lietz, PA's license?
NPPES lists Wisconsin license number 2066, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Greg A. Lietz, PA prescribe under Medicare Part D?
In 2024, Greg A. Lietz, PA had 292 Medicare Part D claims for 158 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.