Doctor profile · Federal record

Dr. Aaron Johnson, M.D.

Urology Physician (CMS: Urology) · Fond du LAC, WI

  • NPI 1538124854
  • Accepts Medicare
  • 26 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
420 E Division St
Fond du LAC, WI 549354560
(920) 926-8495

Credentials & registration

NPPES · NUCC
NPI registered
April 2006 — 20 yrs on file
Profile last updated
February 29, 2016
Year of graduation
2000 — 26 yrs since
Specialty taxonomy
208800000X — NUCC code
State license (1)
Wisconsin #48454
Medicaid
WI #34943200

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1538124854. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
778
Distinct HCPCS
10
Medicare allowed
$60,675
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 308 200 $86
51798 Ultrasound measurement of bladder capacity after voiding 178 122 $10
99231 Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 100 35 $47
51702 Simple insertion of temporary bladder tube 46 18 $59
52332 Insertion of stent in ureter using an endoscope 43 26 $132
52000 Diagnostic exam of bladder and urethra using an endoscope 33 22 $224
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 16 16 $124
52356 Crushing of stone of ureter with insertion of stent using an endoscope 15 12 $389
99214 Established patient office or other outpatient visit, 30-39 minutes 15 13 $122
99203 New patient office or other outpatient visit, 30-44 minutes 12 12 $106

In context: peer comparison

Among 2 peers in Fond du LAC Urology Physician, average services per provider: 89. This provider delivers 8.7× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$39
Transactions
2
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Urogen Pharma, INC. 1 $22.81
Medtronic, INC. 1 $16.54

By nature of payment

Food and Beverage
$39

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
3,401
Patients
1,042
Total drug cost
$129,292
Drug Type Claims Patients Total cost
Tamsulosin Hcl Generic 1,292 354 $34,417
Dutasteride Generic 484 132 $24,188
Oxybutynin Chloride ER (Oxybutynin Chloride) Brand 354 96 $13,059
Cephalexin Generic 323 121 $3,107
Finasteride Generic 173 53 $3,406
Allopurinol Generic 93 26 $2,058
Doxazosin Mesylate Generic 92 31 $2,713
Nitrofurantoin (Nitrofurantoin Macrocrystal) Brand 90 31 $5,880
Bicalutamide Generic 83 26 $2,787
Oxybutynin Chloride Generic 83 22 $2,482

Frequently asked questions

Auto-generated from federal data
What is Dr. Aaron Johnson's medical specialty?
Dr. Aaron Johnson practices Urology Physician in Fond du LAC, WI.
Where does Dr. Aaron Johnson practice?
Dr. Aaron Johnson practices at 420 E Division St, Fond du LAC, WI 549354560. Office phone: 9209268495.
What is Dr. Aaron Johnson's NPI?
Dr. Aaron Johnson's National Provider Identifier (NPI) is 1538124854, issued by NPPES.
Does Dr. Aaron Johnson accept Medicare assignment?
Yes. Dr. Aaron Johnson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Aaron Johnson commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Ultrasound measurement of bladder capacity after voiding (HCPCS 51798); Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231). Source: CMS Medicare Physician & Other Practitioners file.