What is Willis Rieker's specialty?

Willis Rieker (NPI 1689714834) is a Medicare-billing provider whose primary specialty is Pathology in Beloit, WI.

Where does Willis Rieker practice?

Willis Rieker practices in Beloit, WI, based on the location reported in the CMS Medicare provider datasets for NPI 1689714834.

How much does Medicare pay Willis Rieker?

Willis Rieker (NPI 1689714834) received approximately $59K in total Medicare Part B payments, serving 592 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1689714834

Willis RiekerM.D.

PRACTICETMF GROUP CORPSee all providers at this practice →

PathologyBeloit, WII

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

994

Unique beneficiaries

—

Total services

2,426

Distinct HCPCS

Medicare payment

$56K

Peer benchmark

Total Medicare services vs. 270 Pathology providers in WI — top quintile (cohort median 1,277).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Willis Rieker'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). 31 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Roger Kapoor Dermatology · Roscoe, IL	96	217
JOHANSON, JOHN	79	259
Tsu-Hon Wang Gastroenterology · Beloit, WI	75	269
George Cherian Diagnostic Radiology · Beloit, WI	47	82
Thomas Lisk Diagnostic Radiology · Beloit, WI	41	59
NPI 1003833450	41	82
Scott Kantola Pathology · Wausau, WI	37	40
Maria Taveras Cardiology · Beloit, WI	35	51
Haroon Chughtai Cardiology · Sanford, FL	31	71
NPI 1285642215	27	37
Pierre Charles General Surgery · Quincy, IL	27	89
TSE, JIMSON	26	27

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

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