Will Lyon
NPI 1245791607 · Geriatric Medicine (Internal Medicine) Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Will Lyon is a Geriatric Medicine (Internal Medicine) Physician provider in Milwaukee, WI (NPI 1245791607).
Provider details
- NPI number
- 1245791607
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 75614 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
354 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 75 | $110 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 62 | $170 |
| 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 | 34 | $15 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 33 | $167 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 31 | $73 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 57 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 171 | 37 |
| Atorvastatin Calcium | 99 | 35 |
| Metoprolol Succinate | 94 | 32 |
| Pantoprazole Sodium | 92 | 33 |
| Memantine Hcl | 87 | 19 |
| Sertraline Hcl | 87 | 24 |
| Furosemide | 84 |
Practice location
Mailing address
Additional practice locations (1)
- 10101 W Wisconsin AveMilwaukee, WI 53226-4861Phone: (414) 454-8460Fax: (414) 454-8459
Registry dates
- Enumerated
- 2019-03-28
- Last updated
- 2023-09-11
- Certified
- 2023-09-11
Frequently asked questions
- What is Will Lyon's NPI number?
- Will Lyon's National Provider Identifier (NPI) is 1245791607, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Will Lyon's specialty?
- Will Lyon is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Will Lyon located?
- Will Lyon's practice location on file with NPPES is 9200 W Wisconsin Ave, Milwaukee, WI 53226-3522.
- What is Will Lyon's phone number?
- The practice phone number listed in the NPPES registry for Will Lyon is (414) 805-6850.
- Does Will Lyon accept Medicare?
- Will Lyon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Will Lyon's NPI active?
- Yes — Will Lyon's NPI (1245791607) is active in the NPPES registry as of the last update on 2023-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.