What is Catherine Diefenbach's specialty?

Catherine Diefenbach (NPI 1982864039) is a Medicare-billing provider whose primary specialty is Medical Oncology in New York, NY.

Where does Catherine Diefenbach practice?

Catherine Diefenbach practices in New York, NY, based on the location reported in the CMS Medicare provider datasets for NPI 1982864039.

How much does Medicare pay Catherine Diefenbach?

Catherine Diefenbach (NPI 1982864039) received approximately $34K in total Medicare Part B payments, serving 152 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1982864039

Catherine DiefenbachM.D.

Medical OncologyNew York, NYI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

204

Unique beneficiaries

—

Total services

385

Distinct HCPCS

Medicare payment

$32K

Peer benchmark

Total Medicare services vs. 506 Medical Oncology providers in NY — below median (cohort median 458).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

Final MIPS score

90.8

Quality

91.8

Cost

75.2

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.66%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$10K

Payment records

By payment type

Consulting Fee$9K

Food and Beverage$802

Travel and Lodging$119

Top paying entities

Consulting Fee$9K

Food and Beverage$802

Travel and Lodging$119

REFERRAL NETWORK

Where Catherine Diefenbach'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). 15 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
NYU LANGONE HOSPITALS	58	955
Charles Love Clinical Cardiac Electrophysiology · Baltimore, MD	21	78
ALBERT, ROBIN	21	142
Seniorcare Emergency Medical Services Inc. Ambulance Service Provider · Bronx, NY	19	76
Kennth Hymes Internal Medicine · New York, NY	18	176
Derek Mason Diagnostic Radiology · New York, NY	18	58
Cynthia Liu Pathology · New York, NY	16	155
HEDVAT, CYRUS	16	125
David Kaminetzky Medical Oncology · New York, NY	15	185
Eddie Louie Infectious Disease · New York, NY	15	168
Francis Girvin Diagnostic Radiology · New York, NY	14	86
Elsa Delille Nurse Practitioner · New York, NY	13	127

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