PROVIDER PROFILE · NPI 1689614158

Volney VandalsemMD

PRACTICESTANFORD HEALTH CARESee all providers at this practice →

Diagnostic RadiologyStanford, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,050

Unique beneficiaries

—

Total services

2,150

Distinct HCPCS

Medicare payment

$95K

Peer benchmark

Total Medicare services vs. 3,474 Diagnostic Radiology providers in CA — below median (cohort median 2,975).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

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 Volney Vandalsem'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). 108 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Ann Leung Diagnostic Radiology · Stanford, CA	132	354
Karen Friday Cardiology · Stanford, CA	87	182
Linda Morimoto Diagnostic Radiology · Stanford, CA	85	143
Andreas Loening Diagnostic Radiology · Stanford, CA	84	130
JEFFREY, ROBERT	74	148
DESSER, TERRY	74	103
Joshua Spin Cardiology · Stanford, CA	71	111
FEDERLE, MICHAEL	67	114
Ingela Schnittger Cardiology · Stanford, CA	66	100
Zina Zarshenas Payman Diagnostic Radiology · Stanford, CA	65	95
HERFKENS, ROBERT	59	115
Sean Wu Internal Medicine · Stanford, CA	58	126

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