What is Michael Johnston's specialty?

Michael Johnston (NPI 1114037256) is a Medicare-billing provider whose primary specialty is Physician Assistant in Oskaloosa, IA.

Where does Michael Johnston practice?

Michael Johnston practices in Oskaloosa, IA, based on the location reported in the CMS Medicare provider datasets for NPI 1114037256.

How much does Medicare pay Michael Johnston?

Medicare Part B utilization, prescribing (Part D), MIPS quality scores, and industry payments for Michael Johnston (NPI 1114037256) are detailed on this CareTrace profile.

PROVIDER PROFILE · NPI 1114037256

Michael Johnston

PRACTICEMAHASKA COUNTY HOSPITALSee all providers at this practice →

Physician AssistantOskaloosa, IAI

MEDICARE UTILIZATION · PART B · 2024

No data available for this provider in 2024.

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$41

Distinct drugs

Brand share

0.0%

Top prescribed drugs

Celecoxib13 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.

REFERRAL NETWORK

Where Michael Johnston'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). 4 inbound referrers · 10 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
MAHASKA COUNTY HOSPITAL	62	239
Sreedhar Somisetty Orthopedic Surgery · Oskaloosa, IA	49	143
Elvin Mccarl Diagnostic Radiology · Ottumwa, IA	22	31
Akhtar Ashraf Diagnostic Radiology · Ottumwa, IA	20	37

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
MAHASKA COUNTY HOSPITAL	66	200
Sreedhar Somisetty Orthopedic Surgery · Oskaloosa, IA	53	263
Akhtar Ashraf Diagnostic Radiology · Ottumwa, IA	47	82
OLDSON, BENJAMIN	33	62
PEARSON, KIM	33	47
WHITIS, ANNE	23	37
WHITIS, MATTHEW	18	27
MAHASKA COUNTY HOSPITAL	16	21
NPI 1184617169	16	26
MAHASKA COUNTY HOSPITAL	12	16

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