What is Karl Ost's specialty?

Karl Ost (NPI 1942233358) is a Medicare-billing provider whose primary specialty is Emergency Medicine in Indianapolis, IN.

Where does Karl Ost practice?

Karl Ost practices in Indianapolis, IN, based on the location reported in the CMS Medicare provider datasets for NPI 1942233358.

How much does Medicare pay Karl Ost?

Karl Ost (NPI 1942233358) received approximately $17K in total Medicare Part B payments, serving 107 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1942233358

Karl OstM.D.

Emergency MedicineIndianapolis, INI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

130

Unique beneficiaries

—

Total services

162

Distinct HCPCS

Medicare payment

$11K

Peer benchmark

Total Medicare services vs. 967 Emergency Medicine providers in IN — below median (cohort median 382).

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.

REFERRAL NETWORK

Where Karl Ost'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). 7 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
COMMUNITY HEALTH NETWORK, INC	100	228
Stephan Stockberger Diagnostic Radiology · Indianapolis, IN	13	21
Daniel Fisher Family Practice · Indianapolis, IN	12	17
Holly Wheeler General Practice · Indianapolis, IN	11	14
Justin Chang Diagnostic Radiology · Indianapolis, IN	11	14
INDIANA UNIVERSITY HEALTH INC	11	17
Jesse Clark Family Practice · Indianapolis, IN	11	13

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

Healthparse Signals

Monitor this provider for changes — dated NPI change events