PROVIDER PROFILE · NPI 1023094273

Mark ZarembaMD

CardiologyLaguna Hills, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

262

Unique beneficiaries

—

Total services

433

Distinct HCPCS

Medicare payment

$39K

Peer benchmark

Total Medicare services vs. 1,869 Cardiology providers in CA — bottom quintile (cohort median 2,371).

PRESCRIBING · PART D · 2024

Total Rx claims

1,479

Beneficiaries

—

Total drug cost

$232K

Distinct drugs

Brand share

18.3%

Top prescribed drugs

Rosuvastatin Calcium203 claims

Losartan Potassium144 claims

Metoprolol Succinate103 claims

Amlodipine Besylate101 claims

Atorvastatin Calcium68 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$510

Payment records

By payment type

Food and Beverage$413

Education$97

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (2)

CCN 050567

Hospital

CCN 050603

Hospital

REFERRAL NETWORK

Where Mark Zaremba'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). 6 inbound referrers · 13 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · West Hills, CA	62	267
SADDLEBACK MEMORIAL MEDICAL CENTER	32	119
Steven Sorenson Diagnostic Radiology · Redlands, CA	19	90
Jeffrey Dym Diagnostic Radiology · Laguna Niguel, CA	14	83
HARRIS HISTOLOGY SERVICES	12	19
Navid Jahed Diagnostic Radiology · Mission Viejo, CA	12	45

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
MISSION HOSPITAL REGIONAL MEDICAL CENTER	59	288
CALIFORNIA LABORATORY SCIENCES LLC	50	132
Unilab Corporation Clinical Laboratory · West Hills, CA	42	158
SADDLEBACK MEMORIAL MEDICAL CENTER	38	112
Laboratory Corporation Of America Clinical Laboratory · San Diego, CA	37	134
Jeffrey Dym Diagnostic Radiology · Laguna Niguel, CA	22	147
Steven Sorenson Diagnostic Radiology · Redlands, CA	20	178
HERREN ENTERPRISES INC	17	44
Geoffrey Sigmund Diagnostic Radiology · Orange, CA	17	44
SILVERS, BRENT	16	33
Navid Jahed Diagnostic Radiology · Mission Viejo, CA	14	64
Todd Lempert Diagnostic Radiology · Eden Prairie, MN	13	64

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