Doctor profile · Federal record

Dr. Will Lyon

Geriatric Medicine (Internal Medicine) Physician (CMS: Geriatric Medicine) · Internal Medicine Physician · Milwaukee, WI

  • NPI 1245791607
  • Accepts Medicare
  • 7 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
9200 W Wisconsin Ave
Milwaukee, WI 532263522
(414) 805-6850
fax (414) 805-6864
Additional location
10101 W Wisconsin Ave
Milwaukee, WI 532264861
(414) 454-8460
fax (414) 454-8459

Credentials & registration

NPPES · NUCC
NPI registered
March 2019 — 7 yrs on file
Profile last updated
September 11, 2023
Year of graduation
2019 — 7 yrs since
Specialty taxonomy
207RG0300X — NUCC code
State license (1)
Wisconsin #75614
Medicaid
WI #1245791607

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1245791607. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
129
Distinct HCPCS
5
Medicare allowed
$13,962
HCPCS Description Services Patients Avg allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 35 21 $112
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 28 16 $74
99205 New patient office or other outpatient visit, 60-74 minutes 22 22 $162
99306 Initial nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes 22 20 $172
G0316 Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th 22 11 $29

In context: peer comparison

Among 8 peers in this city , average services per provider: 72. This provider delivers 1.8× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
31
Patients
0
Total drug cost
$974
Drug Type Claims Patients Total cost
Memantine Hcl Generic 17 0 $892
Sertraline Hcl Generic 14 0 $82

Frequently asked questions

Auto-generated from federal data
What is Dr. Will Lyon's medical specialty?
Dr. Will Lyon practices Geriatric Medicine (Internal Medicine) Physician in Milwaukee, WI.
Where does Dr. Will Lyon practice?
Dr. Will Lyon practices at 9200 W Wisconsin Ave, Milwaukee, WI 532263522. Office phone: 4148056850.
What is Dr. Will Lyon's NPI?
Dr. Will Lyon's National Provider Identifier (NPI) is 1245791607, issued by NPPES.
Does Dr. Will Lyon accept Medicare assignment?
Yes. Dr. Will Lyon accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Will Lyon commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); New patient office or other outpatient visit (HCPCS 99205). Source: CMS Medicare Physician & Other Practitioners file.