Greg James Gerber, MD
Family Medicine Physician · Lake Geneva, WI
Greg James Gerber, MD is a family medicine physician with a practice address in Lake Geneva, Wisconsin, and NPI 1831204916, issued on Aug 20, 2006. Check the license (Wisconsin 23056, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Greg James Gerber
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 23056 WI
Self-reported in NPPES; status is on the state search - Practice location
- 146 E Geneva Square, Lake Geneva, WI 53147
- Phone
- (262) 249-5000
- Enumerated
- Aug 20, 2006
- Record last updated
- Mar 7, 2023
- Fax
- (262) 249-7107
- Medicaid ID
- 30354480 WI
- Entity
- Type 1 · individual
Also registered at 146 E Geneva Square
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Greg James Gerber in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 23056Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average family medicine physician in 2024
191 Medicare Part D claims for 19 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Furosemide17 claims
- Tamsulosin Hcl15 claims
- Atorvastatin Calcium14 claims
- Potassium Chloride12 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.
23 family medicine physician records list a practice address in Lake Geneva
They are 23 of the 366 NPPES records with a practice address in Lake Geneva, and 3,765 family medicine physician records in Wisconsin.
All 23 in Lake Geneva → All 3,765 in Wisconsin → Every provider in Lake Geneva →
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 Greg James Gerber, MD's NPI number?
Greg James Gerber, MD's National Provider Identifier (NPI) is 1831204916, issued on Aug 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Greg James Gerber, MD located?
The NPPES record lists a practice address at 146 E Geneva Square, Lake Geneva, WI, 53147. Phone: (262) 249-5000. Providers update this record themselves, so call before visiting.
How can I verify Greg James Gerber, MD's license?
NPPES lists Wisconsin license number 23056, 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.
How much does Greg James Gerber, MD prescribe under Medicare Part D?
In 2024, Greg James Gerber, MD had 191 Medicare Part D claims for 19 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.