What is Karen Wallace's specialty?

Karen Wallace (NPI 1245463934) is a Medicare-billing provider whose primary specialty is Diagnostic Radiology in Cambridge, MA.

Where does Karen Wallace practice?

Karen Wallace practices in Cambridge, MA, based on the location reported in the CMS Medicare provider datasets for NPI 1245463934.

How much does Medicare pay Karen Wallace?

Karen Wallace (NPI 1245463934) received approximately $7K in total Medicare Part B payments, serving 139 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1245463934

Karen WallaceMD

Diagnostic RadiologyCambridge, MAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

Distinct HCPCS

Medicare payment

$3K

Peer benchmark

Total Medicare services vs. 1,146 Diagnostic Radiology providers in MA — bottom quintile (cohort median 2,596).

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.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 050604

Hospital

REFERRAL NETWORK

Where Karen Wallace'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 · 4 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
KAISER FOUNDATION HOSPITALS	54	97

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Rural-Metro Of California Inc Ambulance Service Provider · San Jose, CA	24	40
KAISER FOUNDATION HOSPITALS	15	30
Ashok Krishnaswami Cardiology · San Jose, CA	11	17
David Madwed Diagnostic Radiology · San Jose, CA	11	23

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