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PROVIDER PROFILE · NPI 1982641502

Mark SarnakM.D.

NephrologyBoston, MAI
CROSS-REFERENCE

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ProviderScore
OIG/SAM exclusion screening, sanctions history
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QUALITY · MIPS · 2024
No data available for this provider in 2024.
PRESCRIBING · PART D · 2024
No data available for this provider in 2024.
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
254
Unique beneficiaries
—
Total services
435
Distinct HCPCS
6
Medicare payment
$29K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 270 Nephrology providers in MA — below median (cohort median 904).
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$6K
Payment records
9
By payment type
Consulting Fee$6K
Education$29
Top paying entities
Consulting Fee$6K
Education$29
REFERRAL NETWORK

Where Mark Sarnak'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). 39 inbound referrers · 0 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
Shital Makim
Diagnostic Radiology · Boston, MA
57447
Eascare Llc
Ambulance Service Provider · Weymouth, MA
52590
Hoon Ji
Diagnostic Radiology · New York, NY
48214
Klemens Meyer
Nephrology · Boston, MA
39214
HOMER, MARC38160
Daniel Weiner
Nephrology · Boston, MA
37183
PERRONE, RONALD35585
Munther Homoud
Clinical Cardiac Electrophysiology · Boston, MA
34117
KATZ, JUDITH31149
Jonas Galper
Cardiology · Boston, MA
29110
Boston Public Health Commission
Ambulance Service Provider · Boston, MA
2990
Harprit Bedi
Diagnostic Radiology · Boston, MA
2795
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.