PROVIDER PROFILE · NPI 1003043993

Karen MarcusM.D.

PsychiatryPittsburg, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

223

Unique beneficiaries

—

Total services

854

Distinct HCPCS

Medicare payment

$69K

Peer benchmark

Total Medicare services vs. 2,213 Psychiatry providers in CA — top quintile (cohort median 203).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$532

Distinct drugs

Brand share

0.0%

Top prescribed drugs

Metformin Hcl15 claims

Trazodone Hcl13 claims

Aripiprazole12 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 050305

Hospital

REFERRAL NETWORK

Where Karen Marcus'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). 1 inbound referrers · 6 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
ALAMEDA HEALTH SYSTEM	55	252

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
ALAMEDA HEALTH SYSTEM	80	642
Ronald Seff Psychiatry · Woodside, CA	44	188
Unilab Corporation Clinical Laboratory · Sacramento, CA	20	50
CONTRA COSTA COUNTY	13	49
Unilab Corporation Clinical Laboratory · San Jose, CA	13	56
PARAMEDICS PLUS, LLC	11	18

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