What is John Mastroni's specialty?

John Mastroni (NPI 1568420008) is a Medicare-billing provider whose primary specialty is Ophthalmology in Eureka, CA.

Where does John Mastroni practice?

John Mastroni practices in Eureka, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1568420008.

How much does Medicare pay John Mastroni?

John Mastroni (NPI 1568420008) received approximately $1.1M in total Medicare Part B payments, serving 2,144 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1568420008

John MastroniMD

OphthalmologyEureka, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

5,211

Unique beneficiaries

—

Total services

9,660

Distinct HCPCS

Medicare payment

$1.0M

Peer benchmark

Total Medicare services vs. 2,144 Ophthalmology providers in CA — top quintile (cohort median 1,859).

PRESCRIBING · PART D · 2024

Total Rx claims

5,522

Beneficiaries

—

Total drug cost

$670K

Distinct drugs

Brand share

32.1%

Top prescribed drugs

Latanoprost1,752 claims

Brimonidine Tartrate619 claims

Timolol Maleate515 claims

Dorzolamide Hcl/Timolol Maleat475 claims

Dorzolamide Hcl398 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where John Mastroni'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). 28 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Gloria Abels Internal Medicine · Eureka, CA	47	96
ST. JOSEPH HEALTH NORTHERN CALIFORNIA, LLC	47	64
Humboldt Physicians Surgery And Laser Center Llc Ambulatory Surgical Center · Eureka, CA	44	48
Petra Kuhfahl Internal Medicine · Eugene, OR	42	72
Natalia Zarzhevsky Diagnostic Radiology · Arcata, CA	32	50
Leo Leer Family Practice · Eureka, CA	32	77
Kelly Kinsley Dermatology · Arcata, CA	25	35
Timothy Dalsaso Diagnostic Radiology · Eureka, CA	24	32
John Fjerstad Podiatry · Mckinleyville, CA	22	34
Eva Marshall Family Practice · Eureka, CA	22	48
ANDREWS, WILLIAM	20	28
Anne Carlisle Nurse Practitioner · Eureka, CA	19	23

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