What is Matthew Zarka's specialty?

Matthew Zarka (NPI 1568440741) is a Medicare-billing provider whose primary specialty is Pathology in Scottsdale, AZ.

Where does Matthew Zarka practice?

Matthew Zarka practices in Scottsdale, AZ, based on the location reported in the CMS Medicare provider datasets for NPI 1568440741.

How much does Medicare pay Matthew Zarka?

Matthew Zarka (NPI 1568440741) received approximately $83K in total Medicare Part B payments, serving 771 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1568440741

Matthew ZarkaM.D.

PRACTICEMAYO CLINIC ARIZONASee all providers at this practice →

PathologyScottsdale, AZI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,480

Unique beneficiaries

—

Total services

2,518

Distinct HCPCS

Medicare payment

$80K

Peer benchmark

Total Medicare services vs. 218 Pathology providers in AZ — above median (cohort median 1,920).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

Final MIPS score

86.5

Quality

78.3

Cost

76.6

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.48%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Matthew Zarka'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). 81 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
MAYO CLINIC ARIZONA	726	1,563
Prasad Panse Diagnostic Radiology · Scottsdale, AZ	84	170
Mayo Clinic Arizona Ambulatory Surgical Center · Scottsdale, AZ	84	96
Frederick Chen Diagnostic Radiology · Scottsdale, AZ	82	147
Ryan Robetorye Pathology · Scottsdale, AZ	80	114
Clinton Wellnitz Diagnostic Radiology · Scottsdale, AZ	76	133
Scott Swanson Urology · Phoenix, AZ	67	101
LEE, HOWARD	66	93
Maitray Patel Diagnostic Radiology · Scottsdale, AZ	57	144
Kelley Kennedy Internal Medicine · Scottsdale, AZ	56	79
Nirvikar Dahiya Diagnostic Radiology · Scottsdale, AZ	51	104
Erik Castle Urology · New Orleans, LA	49	109

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