caretrace.iopowered by▸healthparse
SearchCohort Builder
Tools▾
KOL FinderTerritoriesDrug Compare
AI Query
Browse▾
By stateBy specialty
Pricing
SearchCohort BuilderToolsKOL FinderTerritoriesDrug CompareAI QueryBrowseBy stateBy specialtyPricing
PROVIDER PROFILE · NPI 1326067448

Karen FridayMD

PRACTICESTANFORD HEALTH CARESee all providers at this practice →
CardiologyStanford, CAI
CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore
OIG/SAM exclusion screening, sanctions history
© 2026 CareTrace
PricingContactPrivacyTerms
FACILITY AFFILIATIONS

Hospital & Facility Affiliations (5)

CCN 050007
Hospital
CCN 050038
Hospital
CCN 050283
Hospital
CCN 050308
Hospital
CCN 050441
Hospital
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
8,314
Unique beneficiaries
—
Total services
13,887
Distinct HCPCS
3
Medicare payment
$100K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 1,869 Cardiology providers in CA — top quintile (cohort median 2,371).
PRESCRIBING · PART D · 2024
Total Rx claims
25
Beneficiaries
—
Total drug cost
$13K
Distinct drugs
1
Brand share
100.0%
Top prescribed drugs
Nicotine25 claims
QUALITY · MIPS · 2024
Final MIPS score
88.5
Quality
87.1
Cost
69.5
Improvement activities
40.0
Promoting interop.
100.0
Payment adjustment
0.57%
Group
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
No data available for this provider in 2024.
REFERRAL NETWORK

Where Karen Friday'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). 92 inbound referrers · 219 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
Ann Leung
Diagnostic Radiology · Stanford, CA
122326
Ingela Schnittger
Cardiology · Stanford, CA
109211
Paul Wang
Cardiology · Stanford, CA
78164
Linda Morimoto
Diagnostic Radiology · Stanford, CA
77134
Andreas Loening
Diagnostic Radiology · Stanford, CA
77134
Zina Zarshenas Payman
Diagnostic Radiology · Stanford, CA
72111
Hans-Christoph Becker
Diagnostic Radiology · Palo Alto, CA
72159
David Liang
Cardiology · Stanford, CA
68135
JEFFREY, ROBERT65115
Joshua Spin
Cardiology · Stanford, CA
61160
Jon Keller
Pathology · Palo Alto, CA
58216
Kathryn Stevens
Diagnostic Radiology · Stanford, CA
52132
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
STANFORD HEALTH CARE9432,933
Haiwei Guo
Diagnostic Radiology · Stanford, CA
193695
Paul Zei
Clinical Cardiac Electrophysiology · Boston, MA
164421
Linda Morimoto
Diagnostic Radiology · Stanford, CA
130236
Francis Koch
Cardiology · Stanford, CA
124268
Ian Rogers
Cardiology · Stanford, CA
122256
Ann Leung
Diagnostic Radiology · Stanford, CA
108263
Protransport 1
Ambulance Service Provider · Rohnert Park, CA
99158
Curtis Langlotz
Diagnostic Radiology · Stanford, CA
99155
Ingela Schnittger
Cardiology · Stanford, CA
91158
Volney Vandalsem
Diagnostic Radiology · Stanford, CA
87182
Frandics Chan
Diagnostic Radiology · Stanford, CA
85154
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.