What is Charlene Vander Zanden's specialty?

Charlene Vander Zanden (NPI 1235339532) is a Medicare-billing provider whose primary specialty is Internal Medicine in Milwaukee, WI.

Where does Charlene Vander Zanden practice?

Charlene Vander Zanden practices in Milwaukee, WI, based on the location reported in the CMS Medicare provider datasets for NPI 1235339532.

How much does Medicare pay Charlene Vander Zanden?

Charlene Vander Zanden (NPI 1235339532) received approximately $42K in total Medicare Part B payments, serving 136 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1235339532

Charlene Vander ZandenM.D.

Internal MedicineMilwaukee, WII

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

304

Unique beneficiaries

—

Total services

406

Distinct HCPCS

Medicare payment

$33K

Peer benchmark

Total Medicare services vs. 1,244 Internal Medicine providers in WI — below median (cohort median 578).

PRESCRIBING · PART D · 2024

Total Rx claims

2,480

Beneficiaries

—

Total drug cost

$132K

Distinct drugs

Brand share

18.1%

Top prescribed drugs

Atorvastatin Calcium275 claims

Losartan Potassium150 claims

Amlodipine Besylate139 claims

Levothyroxine Sodium129 claims

Rosuvastatin Calcium116 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (4)

Home health agency

Hospital

Hospital

Hospital

REFERRAL NETWORK

Where Charlene Vander Zanden's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 6 inbound referrers · 7 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
FROEDTERT MEMORIAL LUTHERAN HOSPITAL, INC.	105	682
Sujan Fernando Diagnostic Radiology · Milwaukee, WI	12	29
MALMSTEN, CATHARINE	11	31
Ana Perelman Internal Medicine · Milwaukee, WI	11	25
Evgueni Fayn Clinical Cardiac Electrophysiology · Milwaukee, WI	11	33
Byung-Il Choi Cardiology · Milwaukee, WI	11	22

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
FROEDTERT MEMORIAL LUTHERAN HOSPITAL, INC.	118	1,006
Wisconsin Diagnostic Laboratories Llc Clinical Laboratory · Milwaukee, WI	93	319
Keith Baynes Radiation Oncology · La Crosse, WI	18	45
Guillermo Carrera Diagnostic Radiology · Milwaukee, WI	18	47
GUTTERMAN, DAVID	12	27
Rajeev Mannem Radiation Oncology · Milwaukee, WI	12	27
Jennifer Richter Nurse Practitioner · Milwaukee, WI	11	39

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events