What is Mark Kasselik's specialty?

Mark Kasselik (NPI 1891860193) is a Medicare-billing provider whose primary specialty is Internal Medicine in San Francisco, CA.

Where does Mark Kasselik practice?

Mark Kasselik practices in San Francisco, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1891860193.

How much does Medicare pay Mark Kasselik?

Medicare Part B utilization, prescribing (Part D), MIPS quality scores, and industry payments for Mark Kasselik (NPI 1891860193) are detailed on this CareTrace profile.

PROVIDER PROFILE · NPI 1891860193

Mark Kasselik

Internal MedicineSan Francisco, CAI

MEDICARE UTILIZATION · PART B · 2024

No data available for this provider in 2024.

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Mark Kasselik'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). 35 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
CARPENTER, HOWARD	55	177
Ilyas Iliya Internal Medicine · San Francisco, CA	48	205
Joshua Bernstein Nephrology · San Francisco, CA	47	150
STEVENS, SUSAN	43	137
City & County Of San Francisco Ambulance Service Provider · San Francisco, CA	40	114
NPI 1275567943	35	125
Derk Purcell Diagnostic Radiology · San Francisco, CA	34	91
Devan Marar Cardiology · San Francisco, CA	33	188
MOON, KIRK	31	98
Myron Marx Diagnostic Radiology · San Francisco, CA	29	83
Brian Bronzo Diagnostic Radiology · San Francisco, CA	28	76
Edward Baker Diagnostic Radiology · San Francisco, CA	26	110

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