Eileen Williams, PA
NPI 1487659710 · Medical Physician Assistant · La Crosse, WI
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Eileen Williams, PA is a Medical Physician Assistant provider in La Crosse, WI (NPI 1487659710).
Provider details
- NPI number
- 1487659710
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- No
- License
- 1546 (WI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
21 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
430 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 131 | $77 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 119 | $13 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 94 | $112 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 31 | $13 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 284 | 96 |
| Tamoxifen Citrate | 61 | 23 |
| Exemestane | 42 | 12 |
| Letrozole | 32 | 12 |
| Alendronate Sodium | 21 | — |
| Gabapentin | 21 | — |
| Abemaciclibbrand: Verzenio | 21 | — |
| Potassium Chloride | 20 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-14
- Last updated
- 2015-06-03
Frequently asked questions
- What is Eileen Williams's NPI number?
- Eileen Williams's National Provider Identifier (NPI) is 1487659710, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Eileen Williams's specialty?
- Eileen Williams is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Eileen Williams located?
- Eileen Williams's practice location on file with NPPES is 1836 South Ave, La Crosse, WI 54601-5429.
- What is Eileen Williams's phone number?
- The practice phone number listed in the NPPES registry for Eileen Williams is (608) 782-7300.
- Does Eileen Williams accept Medicare?
- Eileen Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Eileen Williams's NPI active?
- Yes — Eileen Williams's NPI (1487659710) is active in the NPPES registry as of the last update on 2015-06-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.