Eileen Williams, PA
Medical Physician Assistant · La Crosse, WI
Eileen Williams, PA is a medical physician assistant with a practice address in La Crosse, Wisconsin, and NPI 1487659710, issued on Jun 14, 2005. Check the license (Wisconsin 1546, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Eileen Williams
- Credential
- PA
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 1546 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1836 South Ave, La Crosse, WI 54601
- Phone
- (608) 782-7300
- Enumerated
- Jun 14, 2005
- Record last updated
- Jun 3, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicaid ID
- 41969100 WI
- Medicare enrollment
- Enrolled (PECOS I20040528000459); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 687 in Wisconsin → Look up another NPI →
Also registered at 1836 South Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Grace AbichtCertified Registered Nurse Anesthetist1003651555
- Paul Abicht, CRNACertified Registered Nurse Anesthetist1528061843
- Mateen Abidi, M.DCardiovascular Disease Physician1730333980
Verify Eileen Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 1546Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average medical physician assistant in 2024
689 Medicare Part D claims for 221 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. 20 claims were for opioids.
Most prescribed
- Anastrozole284 claims
- Tamoxifen Citrate61 claims
- Exemestane42 claims
- Letrozole32 claims
- Alendronate Sodium21 claims
- Gabapentin21 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.
Bills Medicare through one group practice
- Gundersen Clinic LtdSparta, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Eileen Williams among 687 medical physician assistant records in Wisconsin
Eileen Williams, PA is one of 687 medical physician assistant records with a practice address in Wisconsin. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2002 · median 2016 among the 479 with a school on file
- Record last updated2015 · 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 363AM0700X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
139 medical physician assistant records list a practice address in La Crosse
They are 139 of the 3,735 NPPES records with a practice address in La Crosse, and 687 medical physician assistant records in Wisconsin.
All 687 in Wisconsin → Every provider in La Crosse → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Amie Baumgartner, PALa Crosse, WI 546011710981642
- Rebecca Blank, PALa Crosse, WI 546011518961333
- Amanda Byom, PALa Crosse, WI 546011144224726
- Kathryn Majewski, PALa Crosse, WI 546011316941933
- Robert Martens, PALa Crosse, WI 546011093719619
- Cheryl Nigl, PALa Crosse, WI 546011003810532
- Jaime Peterson, PALa Crosse, WI 546011164427548
- Herbert Roberts, PALa Crosse, WI 546011841295185
Common questions
What is Eileen Williams, PA's NPI number?
Eileen Williams, PA's National Provider Identifier (NPI) is 1487659710, issued on Jun 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Eileen Williams, PA located?
The NPPES record lists a practice address at 1836 South Ave, La Crosse, WI, 54601. Phone: (608) 782-7300. Providers update this record themselves, so call before visiting.
How can I verify Eileen Williams, PA's license?
NPPES lists Wisconsin license number 1546, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Eileen Williams, PA prescribe under Medicare Part D?
In 2024, Eileen Williams, PA had 689 Medicare Part D claims for 221 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.