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