What is Maria Johnston's specialty?

Maria Johnston (NPI 1649357443) is a Medicare-billing provider whose primary specialty is Certified Registered Nurse Anesthetist (CRNA) in Wayne, MI.

Where does Maria Johnston practice?

Maria Johnston practices in Wayne, MI, based on the location reported in the CMS Medicare provider datasets for NPI 1649357443.

How much does Medicare pay Maria Johnston?

Maria Johnston (NPI 1649357443) received approximately $12K in total Medicare Part B payments, serving 199 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1649357443

Maria JohnstonDNAP, CRNA

PRACTICEOAKWOOD ANNAPOLISSee all providers at this practice →

Certified Registered Nurse Anesthetist (CRNA)Wayne, MII

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

145

Unique beneficiaries

—

Total services

150

Distinct HCPCS

Medicare payment

$7K

Peer benchmark

Total Medicare services vs. 2,412 Certified Registered Nurse Anesthetist (CRNA) providers in MI — top quintile (cohort median 88).

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

Total received

$155

Payment records

By payment type

Food and Beverage$155

Top paying entities

Food and Beverage$155

REFERRAL NETWORK

Where Maria 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). 6 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
HENRY FORD HEALTH SYSTEM	99	205
HENRY FORD HEALTH SYSTEM	22	30
KANUMILLI, VIJAYA	21	21
Mohammad Raoufi Pathology · Detroit, MI	14	14
Nirmal Kaur Gastroenterology · Detroit, MI	14	34
Amit Bhan Gastroenterology · Detroit, MI	14	22

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