What is James Chapman's specialty?

James Chapman (NPI 1073586913) is a Medicare-billing provider whose primary specialty is Internal Medicine in Muskego, WI.

Where does James Chapman practice?

James Chapman practices in Muskego, WI, based on the location reported in the CMS Medicare provider datasets for NPI 1073586913.

How much does Medicare pay James Chapman?

James Chapman (NPI 1073586913) received approximately $59K in total Medicare Part B payments, serving 245 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1073586913

James ChapmanM.D.

Internal MedicineMuskego, WII

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

518

Unique beneficiaries

—

Total services

668

Distinct HCPCS

Medicare payment

$54K

Peer benchmark

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

PRESCRIBING · PART D · 2024

Total Rx claims

6,140

Beneficiaries

—

Total drug cost

$248K

Distinct drugs

Brand share

16.8%

Top prescribed drugs

Atorvastatin Calcium669 claims

Amlodipine Besylate337 claims

Lisinopril320 claims

Losartan Potassium298 claims

Pantoprazole Sodium254 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 (3)

CCN 527178

Home health agency

CCN 520008

Hospital

CCN 520062

Hospital

REFERRAL NETWORK

Where James Chapman'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 · 17 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Gary Beyer Diagnostic Radiology · Waukesha, WI	14	24
SAEIAN, KOOROUSH	13	119
MAMEROW, STEVEN	12	35
Timothy Schultz Orthopedic Surgery · West Bend, WI	12	55
Andrew Adamson Diagnostic Radiology · Wilmington, NC	11	26
LEECH, RICHARD	11	43

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
PROHEALTH WAUKESHA MEMORIAL HOSPITAL, INC.	275	1,637
Daniel Cheng Internal Medicine · Muskego, WI	103	225
Laurie Whorley Nurse Practitioner · Muskego, WI	30	113
James Vavra Podiatry · Pewaukee, WI	17	39
Kathleen Klaas Diagnostic Radiology · Waukesha, WI	16	41
FROEDTERT MEMORIAL LUTHERAN HOSPITAL, INC.	15	48
Gary Beyer Diagnostic Radiology · Waukesha, WI	14	38
Timothy Schultz Orthopedic Surgery · West Bend, WI	13	65
Gregory Francken Diagnostic Radiology · Waukesha, WI	13	34
John Grogan Diagnostic Radiology · Waukesha, WI	12	28
Jennifer Bergin Diagnostic Radiology · Waukesha, WI	12	36
SAEIAN, KOOROUSH	12	128

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