Gregory J. Leitheiser, MD
Family Medicine Physician · Cumberland, WI
Gregory J. Leitheiser, MD is a family medicine physician with a practice address in Cumberland, Wisconsin, and NPI 1659307361, issued on Jun 24, 2006. Check the license (Wisconsin 29051, as entered in NPPES) on the Wisconsin Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Gregory J. Leitheiser
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 29051 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1475 Webb St, Cumberland, WI 54829
- Phone
- (715) 822-2231
- Enumerated
- Jun 24, 2006
- Record last updated
- Dec 30, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (715) 822-2023
- Medicaid ID
- 31547600 WI
- Entity
- Type 1 · individual
Also registered at 1475 Webb St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alan Carlson, MDFamily Medicine Physician1770511537
- Faith Gustafson, PA-CMedical Physician Assistant1356348858
- Thomas Lingen, MDFamily Medicine Physician1003842402
Verify Gregory J. Leitheiser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 29051Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8 family medicine physician records list a practice address in Cumberland
They are 8 of the 95 NPPES records with a practice address in Cumberland, and 3,765 family medicine physician records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 8 in Cumberland → All 3,765 in Wisconsin → Every provider in Cumberland →
Other family medicine physician records in Wisconsin
- Ashraf AbbasAppleton, WI1558723775
- Ghudran Abdulal, MDNew Berlin, WI1083622666
- Yusuf Abdullah, DOSun Prairie, WI1437788478
- Vanessa Abejuela-Matt, D.O.Mount Pleasant, WI1558687749
- Emily Abeyta, MDWaukesha, WI1386905107
- Jeanette Abraham, MDWeston, WI1205895810
- Sarada Abraham, M.D.Oconomowoc, WI1962851972
- Kirsten Abramson, MDMadison, WI1417909979
- Alexandra Adams, MD PHDMadison, WI1184689291
- David AdamsMadison, WI1992986897
Common questions
What is Gregory J. Leitheiser, MD's NPI number?
Gregory J. Leitheiser, MD's National Provider Identifier (NPI) is 1659307361, issued on Jun 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory J. Leitheiser, MD located?
The NPPES record lists a practice address at 1475 Webb St, Cumberland, WI, 54829. Phone: (715) 822-2231. Providers update this record themselves, so call before visiting.
How can I verify Gregory J. Leitheiser, MD's license?
NPPES lists Wisconsin license number 29051, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.