Doctor profile · Federal record

Dr. John Zandt, M.D.

Hospitalist Physician (CMS: Internal Medicine) · Internal Medicine Physician · Waukesha, WI

  • NPI 1104899798
  • Accepts Medicare
  • 38 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
Waukesha Memorial Hospital-Hospitalist Program, 725 American Avenue Room 2036
Waukesha, WI 53188
(262) 928-1000
fax (262) 928-6140
Mailing address
N17 W24100 Riverwood Drive Suite 250, Prohealth Care Medical Associates INC.
Waukesha, WI 531881177

Credentials & registration

NPPES · NUCC
NPI registered
February 2006 — 20 yrs on file
Profile last updated
November 9, 2011
Year of graduation
1988 — 38 yrs since
Specialty taxonomy
208M00000X — NUCC code
State licenses (2)
Wisconsin #31971-020 · Wisconsin #31971
Medicaid
WI #31703600

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1104899798. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
521
Distinct HCPCS
4
Medicare allowed
$46,545
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 370 128 $76
99239 Hospital discharge day management, more than 30 minutes 74 72 $109
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 44 32 $114
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 33 32 $166

In context: peer comparison

Among 6 peers in Waukesha Hospitalist Physician, average services per provider: 142. This provider delivers 3.7× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
75
Patients
51
Total drug cost
$6,079
Drug Type Claims Patients Total cost
Pantoprazole Sodium Generic 21 20 $181
Amlodipine Besylate Generic 20 20 $70
Carvedilol Generic 12 0 $56
Eliquis (Apixaban) Brand 11 0 $5,717
Prednisone Generic 11 11 $54

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. John Zandt's medical specialty?
Dr. John Zandt practices Hospitalist Physician in Waukesha, WI.
Where does Dr. John Zandt practice?
Dr. John Zandt practices at Waukesha Memorial Hospital-Hospitalist Program, Waukesha, WI 53188. Office phone: 2629281000.
What is Dr. John Zandt's NPI?
Dr. John Zandt's National Provider Identifier (NPI) is 1104899798, issued by NPPES.
Does Dr. John Zandt accept Medicare assignment?
Yes. Dr. John Zandt accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Zandt commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.