What is Mary Klein's specialty?

Mary Klein (NPI 1518966589) is a Medicare-billing provider whose primary specialty is Hematology-Oncology in Valparaiso, IN.

Where does Mary Klein practice?

Mary Klein practices in Valparaiso, IN, based on the location reported in the CMS Medicare provider datasets for NPI 1518966589.

How much does Medicare pay Mary Klein?

Mary Klein (NPI 1518966589) received approximately $54K in total Medicare Part B payments, serving 273 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1518966589

Mary KleinM.D.

Hematology-OncologyValparaiso, INI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

337

Unique beneficiaries

—

Total services

1,695

Distinct HCPCS

Medicare payment

$54K

Peer benchmark

Total Medicare services vs. 177 Hematology-Oncology providers in IN — above median (cohort median 1,010).

PRESCRIBING · PART D · 2024

Total Rx claims

680

Beneficiaries

—

Total drug cost

$810K

Distinct drugs

Brand share

38.2%

Top prescribed drugs

Apixaban108 claims

Anastrozole103 claims

Rivaroxaban80 claims

Warfarin Sodium59 claims

Potassium Chloride43 claims

QUALITY · MIPS · 2024

Final MIPS score

90.7

Quality

76.2

Cost

0.0

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.66%

APM Entity

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Mary Klein'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). 53 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
PORTER HOSPITAL LLC	500	6,184
Esther Lee Diagnostic Radiology · Valparaiso, IN	152	621
Omar Barakat Diagnostic Radiology · Valparaiso, IN	139	1,032
Jeffrey Huth Diagnostic Radiology · Valparaiso, IN	133	816
James Forde Diagnostic Radiology · Valparaiso, IN	120	496
Vivek Mishra Diagnostic Radiology · Laporte, IN	103	522
Steven Hossler Diagnostic Radiology · Fort Wayne, IN	84	520
Masood Ghouse Hematology-Oncology · Ada, OK	72	431
Douglas Mazurek Critical Care (Intensivists) · Valparaiso, IN	66	410
Jun Hu Pathology · Valparaiso, IN	60	221
Amjad Alkadri Diagnostic Radiology · Valparaiso, IN	52	247
Aj Pampalone Internal Medicine · Valparaiso, IN	47	613

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