What is Alessandro Castellarin's specialty?

Alessandro Castellarin (NPI 1689773244) is a Medicare-billing provider whose primary specialty is Ophthalmology in Santa Barbara, CA.

Where does Alessandro Castellarin practice?

Alessandro Castellarin practices in Santa Barbara, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1689773244.

How much does Medicare pay Alessandro Castellarin?

Alessandro Castellarin (NPI 1689773244) received approximately $6.4M in total Medicare Part B payments, serving 2,275 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1689773244

Alessandro CastellarinM.D.

OphthalmologySanta Barbara, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

7,788

Unique beneficiaries

—

Total services

64,189

Distinct HCPCS

Medicare payment

$6.4M

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

994

Beneficiaries

—

Total drug cost

$143K

Distinct drugs

Brand share

36.8%

Top prescribed drugs

Prednisolone Acetate125 claims

Erythromycin Base111 claims

Brimonidine Tartrate80 claims

Dorzolamide Hcl/Timolol Maleat77 claims

Latanoprost74 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$2K

Payment records

By payment type

Food and Beverage$2K

Top paying entities

Food and Beverage$2K

REFERRAL NETWORK

Where Alessandro Castellarin'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). 44 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Pacific Point Laboratories, Inc. Clinical Laboratory · San Luis Obispo, CA	251	600
Pacific Diagnostic Laboratories Clinical Laboratory · Santa Barbara, CA	197	553
Unilab Corporation Clinical Laboratory · West Hills, CA	141	338
SANTA BARBARA COTTAGE HOSPITAL	77	174
BAKERSFIELD MEMORIAL HOSPITAL	40	190
Gregory Stainer Ophthalmology · La Jolla, CA	39	89
Steven Zelko Ophthalmology · Santa Barbara, CA	37	74
COMMUNITY MEMORIAL HEALTH SYSTEM	37	81
CHANG, JOSEPH	33	61
Daniel Chang Ophthalmology · Bakersfield, CA	31	55
NPI 1255335535	29	77
DIGNITY HEALTH	29	48

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