NPPES file of Aug 9, 2026

Leon Gu, MD

Family Medicine Physician · Deforest, WI

Leon Gu, MD is a family medicine physician with a practice address in Deforest, Wisconsin, and NPI 1780260604, issued on Mar 22, 2021. Check the license (Wisconsin 84611-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1780260604
Name
Leon Gu
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
84611-20 WI
Self-reported in NPPES; status is on the state search
Practice location
4200 Savannah Dr, Deforest, WI 53532
Phone
(608) 417-3300
Enumerated
Mar 22, 2021
Record last updated
Sep 4, 2024
Medicare enrollment
Enrolled (PECOS I20240923002259); accepts Medicare assignment
Medical or professional school
University Of Texas Southwestern Medical School At Dallas, 2017
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 4200 Savannah Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Sarah Armstrong, LCSWClinical Social Worker1477102226
  2. John Bayer, PT/ATCPhysical Therapist1730256975
  3. Luciano BranchRegistered Nurse1245793637
  4. Cynthia DevinePhysical Therapy Assistant1740357060
  5. Catrina Heath, APNPFamily Nurse Practitioner1518326412
  6. Laura Jacques, MDObstetrics & Gynecology Physician1336335686

Verify Leon Gu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 84611-20
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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96% fewer Medicare Part D claims than the average family medicine physician in 2024

131 Medicare Part D claims for 37 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.

  1. Leon Gu131
  2. Specialty average3,544

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.

Industry payments in 2024: $51.00

2 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Leon Gu$51.00
  2. Specialty average$902.55

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Meriter Hospital IncDe Forest, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

7 family medicine physician records list a practice address in Deforest

They are 7 of the 115 NPPES records with a practice address in Deforest, and 3,765 family medicine physician records in Wisconsin.

Other family medicine physician records in Wisconsin

  1. Ashraf AbbasAppleton, WI1558723775
  2. Ghudran Abdulal, MDNew Berlin, WI1083622666
  3. Yusuf Abdullah, DOSun Prairie, WI1437788478
  4. Vanessa Abejuela-Matt, D.O.Mount Pleasant, WI1558687749
  5. Emily Abeyta, MDWaukesha, WI1386905107
  6. Jeanette Abraham, MDWeston, WI1205895810
  7. Sarada Abraham, M.D.Oconomowoc, WI1962851972
  8. Kirsten Abramson, MDMadison, WI1417909979
  9. Alexandra Adams, MD PHDMadison, WI1184689291
  10. David AdamsMadison, WI1992986897

Common questions

What is Leon Gu, MD's NPI number?

Leon Gu, MD's National Provider Identifier (NPI) is 1780260604, issued on Mar 22, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Leon Gu, MD located?

The NPPES record lists a practice address at 4200 Savannah Dr, Deforest, WI, 53532. Phone: (608) 417-3300. Providers update this record themselves, so call before visiting.

How can I verify Leon Gu, MD's license?

NPPES lists Wisconsin license number 84611-20, 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 Leon Gu, MD prescribe under Medicare Part D?

In 2024, Leon Gu, MD had 131 Medicare Part D claims for 37 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.