Eric S. Gaenslen, M.D.
Orthopaedic Hand Surgery Physician · Grafton, WI
Eric S. Gaenslen, M.D. is an orthopaedic hand surgery physician with a practice address in Grafton, Wisconsin, and NPI 1982633079, issued on Jul 1, 2006. Check the license (Wisconsin 36678, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Eric S. Gaenslen
- Credential
- M.D.
- Primary taxonomy
- Orthopaedic Hand Surgery Physician 207XS0106X
- License number
- 36678 WI
Self-reported in NPPES; status is on the state search - Practice location
- 975 Port Washington Road, Grafton, WI 53024
- Phone
- (262) 387-8300
- Enumerated
- Jul 1, 2006
- Record last updated
- Aug 7, 2024
- Medicaid ID
- 32140000 WI
- Medicare enrollment
- Enrolled (PECOS I20080522000544); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 1989
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest orthopaedic hand surgery physician records → All 56 in Wisconsin → Look up another NPI →
Also registered at 975 Port Washington Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Anderson, MDOrthopaedic Surgery Physician1558353243
- Robert Churchill, M.D.Orthopaedic Surgery Physician1811926017
- Omar Darr, M.D.Orthopaedic Surgery Physician1114959897
- Thomas Doers, MDOrthopaedic Surgery Physician1700868957
- Jennifer Hohner, RNRegistered Nurse1518276138
- Craig Jankuski, PTPhysical Therapist1710921507
Verify Eric S. Gaenslen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 36678Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average orthopaedic hand surgery physician in 2024
57 Medicare Part D claims for 43 beneficiaries, against an average of 186 among the 2,203 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 20 claims were for opioids.
Most prescribed
- Cephalexin12 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: $418.59
3 payments; by number, the most common kind was food and beverage; the largest payer was Sonex Health, Inc. The 1,819 providers of this specialty with any payment received $5,529.86 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 2 group practices
- Advantage Physical Therapy And Sports Rehab, LLCKenosha, WI
- Aurora Advanced Healthcare, Inc.Mequon, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Eric S. Gaenslen among 56 orthopaedic hand surgery physician records in Wisconsin
Eric S. Gaenslen, M.D. is one of 56 orthopaedic hand surgery physician records with a practice address in Wisconsin. 91% 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 16% of them.
- NPI issued2006 · 16% of these records are older, 43% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated1989 · median 2004 among the 44 with a school on file
- Record last updated2024 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XS0106X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Hand Surgery Physician providers in Wisconsin
There are 56 orthopaedic hand surgery physician records in Wisconsin.
All 56 in Wisconsin → Every provider in Grafton → Orthopaedic Hand Surgery Physician nationwide →
The 8 orthopaedic hand surgery physician records with the nearest ZIP codes
- Laith Al-Shihabi, M.D.Pewaukee, WI 530721861713265
- Jeffrey Coppage, M.D.Pewaukee, WI 530721528382413
- James Foley, M.D.Pewaukee, WI 530721659467132
- David Merkow, MDPewaukee, WI 530721265939532
- John Siegert, M.D.Mequon, WI 530921013989185
- Greg Watchmaker, MDMequon, WI 530921275564221
- Dennis Andersen, M.D.Franklin, WI 531321831123249
- David Clark, MDFranklin, WI 531321801958434
Common questions
What is Eric S. Gaenslen, M.D.'s NPI number?
Eric S. Gaenslen, M.D.'s National Provider Identifier (NPI) is 1982633079, issued on Jul 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Eric S. Gaenslen, M.D. located?
The NPPES record lists a practice address at 975 Port Washington Road, Grafton, WI, 53024. Phone: (262) 387-8300. Providers update this record themselves, so call before visiting.
How can I verify Eric S. Gaenslen, M.D.'s license?
NPPES lists Wisconsin license number 36678, 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 Eric S. Gaenslen, M.D. prescribe under Medicare Part D?
In 2024, Eric S. Gaenslen, M.D. had 57 Medicare Part D claims for 43 beneficiaries; the average among orthopaedic hand surgery physician prescribers was 186. 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.