Doctor profile · Federal record

Dr. Dennis Zagrodnik, M.D.

Surgery Physician (CMS: General Surgery) · Summit, WI

  • NPI 1538155569
  • Accepts Medicare
  • 29 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
36500 Aurora Dr
Summit, WI 530664899
(262) 434-5000
fax (262) 434-7250
Mailing address
Po Box 735044
Chicago, IL 606735044

Credentials & registration

NPPES · NUCC
NPI registered
September 2005 — 21 yrs on file
Profile last updated
July 2, 2024
Year of graduation
1997 — 29 yrs since
Specialty taxonomy
208600000X — NUCC code
State license (1)
Wisconsin #49528-020
Medicaid
WI #34900300

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1538155569. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
349
Distinct HCPCS
9
Medicare allowed
$44,840
HCPCS Description Services Patients Avg allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 63 34 $112
99291 Critical care, first 30-74 minutes 54 22 $202
99214 Established patient office or other outpatient visit, 30-39 minutes 48 40 $121
99203 New patient office or other outpatient visit, 30-44 minutes 47 47 $105
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 40 39 $165
99213 Established patient office or other outpatient visit, 20-29 minutes 36 32 $87
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 32 26 $73
99215 Established patient office or other outpatient visit, 40-54 minutes 15 15 $172
99239 Hospital discharge day management, more than 30 minutes 14 14 $109

In context: peer comparison

Among 3 peers in this city , average services per provider: 40. This provider delivers 8.7× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
133
Patients
48
Total drug cost
$28,577
Drug Type Claims Patients Total cost
Clopidogrel (Clopidogrel Bisulfate) Brand 40 0 $428
Eliquis (Apixaban) Brand 32 0 $27,118
Oxycodone Hcl Generic 28 26 $81
Celecoxib Generic 22 22 $230
Cilostazol Generic 11 0 $720

Frequently asked questions

Auto-generated from federal data
What is Dr. Dennis Zagrodnik's medical specialty?
Dr. Dennis Zagrodnik practices Surgery Physician in Summit, WI.
Where does Dr. Dennis Zagrodnik practice?
Dr. Dennis Zagrodnik practices at 36500 Aurora Dr, Summit, WI 530664899. Office phone: 2624345000.
What is Dr. Dennis Zagrodnik's NPI?
Dr. Dennis Zagrodnik's National Provider Identifier (NPI) is 1538155569, issued by NPPES.
Does Dr. Dennis Zagrodnik accept Medicare assignment?
Yes. Dr. Dennis Zagrodnik accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Dennis Zagrodnik commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Critical care (HCPCS 99291); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.