What is Mary Fidler's specialty?

Mary Fidler (NPI 1598960494) is a Medicare-billing provider whose primary specialty is Medical Oncology in Chicago, IL.

Where does Mary Fidler practice?

Mary Fidler practices in Chicago, IL, based on the location reported in the CMS Medicare provider datasets for NPI 1598960494.

How much does Medicare pay Mary Fidler?

Mary Fidler (NPI 1598960494) received approximately $57K in total Medicare Part B payments, serving 191 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1598960494

Mary FidlerM.D.

PRACTICERUSH UNIVERSITY MEDICAL CENTERSee all providers at this practice →

Medical OncologyChicago, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

423

Unique beneficiaries

—

Total services

771

Distinct HCPCS

Medicare payment

$55K

Peer benchmark

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

PRESCRIBING · PART D · 2024

Total Rx claims

499

Beneficiaries

—

Total drug cost

$2.5M

Distinct drugs

Brand share

46.5%

Top prescribed drugs

Osimertinib Mesylate89 claims

Levothyroxine Sodium72 claims

Dexamethasone47 claims

Ondansetron Hcl32 claims

Prochlorperazine Maleate25 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$30K

Payment records

By payment type

Consulting Fee$25K

Honoraria$3K

Food and Beverage$1K

Travel and Lodging$717

Top paying entities

Consulting Fee$25K

Honoraria$3K

Food and Beverage$1K

Travel and Lodging$717

REFERRAL NETWORK

Where Mary Fidler'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). 20 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Palmi Shah Diagnostic Radiology · Chicago, IL	73	310
David Sher Radiation Oncology · Boston, MA	42	693
NPI 1194783076	36	94
NIELSEN, THOMAS	27	266
Paolo Gattuso Pathology · Chicago, IL	23	61
Ritu Ghai Pathology · Oak Lawn, IL	22	61
Carol Lin Diagnostic Radiology · Chicago, IL	21	83
John Hibbeln Diagnostic Radiology · Chicago, IL	21	106
Jagadeesh Singh Diagnostic Radiology · Chicago, IL	20	104
Tochukwu Okwuosa Cardiology · Chicago, IL	20	332
Mehmet Kocak Diagnostic Radiology · Chicago, IL	19	94
Maria Stone Nurse Practitioner · Chicago, IL	19	85

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