What is Ralph Koo's specialty?

Ralph Koo (NPI 1205932050) is a Medicare-billing provider whose primary specialty is Emergency Medicine in Sacramento, CA.

Where does Ralph Koo practice?

Ralph Koo practices in Sacramento, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1205932050.

How much does Medicare pay Ralph Koo?

Ralph Koo (NPI 1205932050) received approximately $54K in total Medicare Part B payments, serving 362 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1205932050

Ralph KooMD

PRACTICERADIOLOGICAL ASSOCIATES OF SACRAMENTO MEDICAL GROUPSee all providers at this practice →

Emergency MedicineSacramento, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

546

Unique beneficiaries

—

Total services

602

Distinct HCPCS

Medicare payment

$52K

Peer benchmark

Total Medicare services vs. 5,287 Emergency Medicine providers in CA — above median (cohort median 355).

PRESCRIBING · PART D · 2024

Total Rx claims

115

Beneficiaries

—

Total drug cost

$1K

Distinct drugs

Brand share

47.8%

Top prescribed drugs

Morphine Sulfate31 claims

Ondansetron26 claims

Cephalexin17 claims

Albuterol Sulfate16 claims

Nitrofurantoin Monohyd/M-Cryst13 claims

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 (2)

CCN 050167

Hospital

CCN 050367

Hospital

REFERRAL NETWORK

Where Ralph Koo'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 · 2 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
CONTRA COSTA COUNTY	80	205

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
CONTRA COSTA COUNTY	136	395
American Medical Response West Ambulance Service Provider · Concord, CA	29	55

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