Xian F. Gu, M.D.
Neurology Physician · Fond Du Lac, WI
Xian F. Gu, M.D. is a neurology physician with a practice address in Fond Du Lac, Wisconsin, and NPI 1811935752, issued on Jun 3, 2006. Check the license (Wisconsin 36421, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Xian F. Gu
- Credential
- M.D.
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- 36421 WI
Self-reported in NPPES; status is on the state search - Practice location
- 420 E Division St, Fond Du Lac, WI 54935
- Phone
- (920) 926-8343
- Enumerated
- Jun 3, 2006
- Record last updated
- Apr 12, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (920) 926-8963
- Medicaid ID
- 32111900 WI
- Medicare enrollment
- Enrolled (PECOS I20050214000877); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 399 in Wisconsin → Look up another NPI →
Also registered at 420 E Division St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Berenz, FNP-BCFamily Nurse Practitioner1619386885
- Melissa Berggren, PA-CPhysician Assistant1639377617
- Louann Biddick, NPNurse Practitioner1770566721
- Jennifer Bissell, MDFamily Medicine Physician1316146962
- Tiffany Boelk, APNPNurse Practitioner1700459690
- David Bowman, M.D.Cardiovascular Disease Physician1962492397
Verify Xian F. Gu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 36421Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.2 times the Medicare Part D claims of the average neurology physician in 2024
5,708 Medicare Part D claims for 724 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 106 claims were for opioids.
Most prescribed
- Carbidopa-Levodopa396 claims
- Donepezil Hcl365 claims
- Levetiracetam340 claims
- Gabapentin302 claims
- Primidone269 claims
- Quetiapine Fumarate239 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.
Industry payments in 2024: $437.59
20 payments; by number, the most common kind was food and beverage; the largest payer was Teva Pharmaceuticals USA, Inc. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Agnesian Healthcare IncFond Du Lac, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Xian F. Gu among 399 neurology physician records in Wisconsin
Xian F. Gu, M.D. is one of 399 neurology physician records with a practice address in Wisconsin. 77% 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, 53% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1982 · median 2005 among the 274 with a school on file
- Record last updated2021 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Wisconsin
There are 399 neurology physician records in Wisconsin.
All 399 in Wisconsin → Every provider in Fond Du Lac → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Steven Sandstrom, M.D.Fond Du Lac, WI 549371174625610
- Joseph Jares, MDNeenah, WI 549561194714469
- Lisa Kokontis, MDNeenah, WI 549561487604526
- Gizell Larson, MDNeenah, WI 549561629029707
- Daniel Long, D.ONeenah, WI 549561033523329
- Thomas Mattio, MDNeenah, WI 549561356382535
- Kelley Parnell, MDNeenah, WI 549561154328896
- Steven Price, MDNeenah, WI 549561457302432
Common questions
What is Xian F. Gu, M.D.'s NPI number?
Xian F. Gu, M.D.'s National Provider Identifier (NPI) is 1811935752, issued on Jun 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Xian F. Gu, M.D. located?
The NPPES record lists a practice address at 420 E Division St, Fond Du Lac, WI, 54935. Phone: (920) 926-8343. Providers update this record themselves, so call before visiting.
How can I verify Xian F. Gu, M.D.'s license?
NPPES lists Wisconsin license number 36421, 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 Xian F. Gu, M.D. prescribe under Medicare Part D?
In 2024, Xian F. Gu, M.D. had 5,708 Medicare Part D claims for 724 beneficiaries; the average among neurology physician prescribers was 1,370. 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.