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PROVIDER PROFILE · NPI 1336425644

William ToPA

Physician AssistantGarden Grove, CAI
CROSS-REFERENCE

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OIG/SAM exclusion screening, sanctions history
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REFERRAL NETWORK

Where William To'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
PhysicianPatientsVisits
David K Imagawa
General Surgery · Orange, CA
3390
Aram Demirjian
General Surgery · Cambridge, MA
2151
Unilab Corporation
Clinical Laboratory · West Hills, CA
1326
Tara Seery
Internal Medicine · Irvine, CA
1248
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
UNIVERSITY OF CALIFORNIA IRVINE81349
David K Imagawa
General Surgery · Orange, CA
58172
Unilab Corporation
Clinical Laboratory · West Hills, CA
1736
Tara Seery
Internal Medicine · Irvine, CA
1569
John Lee
Gastroenterology · Orange, CA
1328
Byron J Allen
Internal Medicine · Orange, CA
1323
Aram Demirjian
General Surgery · Cambridge, MA
1339
Chandana Lall
Diagnostic Radiology · Indianapolis, IN
1214
Roozbeh Houshyar
Diagnostic Radiology · Orange, CA
1112
Dayantha Fernando
Interventional Radiology · Orange, CA
1127
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.
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
294
Unique beneficiaries
—
Total services
430
Distinct HCPCS
4
Medicare payment
$23K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 7,073 Physician Assistant providers in CA — above median (cohort median 224).
PRESCRIBING · PART D · 2024
Total Rx claims
257
Beneficiaries
—
Total drug cost
$142K
Distinct drugs
9
Brand share
37.7%
Top prescribed drugs
Lipase/Protease/Amylase63 claims
Ursodiol37 claims
Neomycin Sulfate31 claims
Metronidazole31 claims
Pantoprazole Sodium21 claims
QUALITY · MIPS · 2024
No data available for this provider in 2024.
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$125
Payment records
1
By payment type
Food and Beverage$125
Top paying entities
Food and Beverage$125