What is William Gradishar's specialty?

William Gradishar (NPI 1437187929) is a Medicare-billing provider whose primary specialty is Medical Oncology in Chicago, IL.

Where does William Gradishar practice?

William Gradishar practices in Chicago, IL, based on the location reported in the CMS Medicare provider datasets for NPI 1437187929.

How much does Medicare pay William Gradishar?

William Gradishar (NPI 1437187929) received approximately $1.5M in total Medicare Part B payments, serving 431 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1437187929

William GradisharMD

Medical OncologyChicago, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

939

Unique beneficiaries

—

Total services

50,082

Distinct HCPCS

Medicare payment

$812K

Peer benchmark

Total Medicare services vs. 96 Medical Oncology providers in IL — top quintile (cohort median 1,343).

PRESCRIBING · PART D · 2024

Total Rx claims

612

Beneficiaries

—

Total drug cost

$2.3M

Distinct drugs

Brand share

22.5%

Top prescribed drugs

Anastrozole300 claims

Palbociclib51 claims

Tamoxifen Citrate51 claims

Letrozole49 claims

Exemestane46 claims

QUALITY · MIPS · 2024

Final MIPS score

95.2

Quality

83.0

Cost

0.0

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.85%

APM Entity

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$56K

Payment records

By payment type

Consulting Fee$52K

Travel and Lodging$2K

Food and Beverage$1K

Compensation for serving as faculty or as a speaker for a medical education program$1K

Top paying entities

Consulting Fee$52K

Travel and Lodging$2K

Food and Beverage$1K

Compensation for serving as faculty or as a speaker for a medical education program$1K

REFERRAL NETWORK

Where William Gradishar'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). 16 inbound referrers · 33 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
NORTHWESTERN MEMORIAL HOSPITAL	209	1,728
Cesar Santa-Maria Medical Oncology · Baltimore, MD	39	277
Brady Stein Hematology · Chicago, IL	36	436
Anaadriana Zakarija Hematology · Chicago, IL	36	337
ENDEAVOR HEALTH CLINICAL OPERATIONS	24	59
Thomas Grant Diagnostic Radiology · Chicago, IL	22	94
CENTRAL DUPAGE HOSPITAL ASSOCIATION	19	28
Kevin Bethke Surgical Oncology · Chicago, IL	17	50
REHABILITATION INSTITUTE OF CHICAGO	16	43
Issam Mikati Cardiology · Chicago, IL	13	69
Jeanne Horowitz Diagnostic Radiology · Chicago, IL	13	55
Eric Hart Diagnostic Radiology · Chicago, IL	12	38

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
NORTHWESTERN MEMORIAL HOSPITAL	306	2,216
JAIN, SARIKA	55	426
Cesar Santa-Maria Medical Oncology · Baltimore, MD	38	269
Brady Stein Hematology · Chicago, IL	37	349
Brandon Mcmahon Hematology · Aurora, CO	35	557
ENDEAVOR HEALTH CLINICAL OPERATIONS	32	66
DILLEHAY, GARY	32	109
Anaadriana Zakarija Hematology · Chicago, IL	31	254
Kelly Kindy Nurse Practitioner · Chicago, IL	27	395
WOLFMAN, JUDITH	24	32
NPI 1740271808	22	66
LURAIN, JOHN	22	122

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