caretrace.iopowered by▸healthparse
SearchCohort Builder
Tools▾
KOL FinderTerritoriesDrug Compare
AI Query
Browse▾
By stateBy specialty
Pricing
SearchCohort BuilderToolsKOL FinderTerritoriesDrug CompareAI QueryBrowseBy stateBy specialtyPricing
PROVIDER PROFILE · NPI 1376546713

William JohnstonM.D.

PRACTICEBLINK OPTICAL LLCSee all providers at this practice →
OphthalmologySeattle, WAI
CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore
OIG/SAM exclusion screening, sanctions history
© 2026 CareTrace
PricingContactPrivacyTerms
REFERRAL NETWORK

Where William 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 · 14 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
SWEDISH HEALTH SERVICES2544
DYNACARE NORTHWEST, INC2048
Antonius Mulia
Internal Medicine · Seattle, WA
1330
David Chang
Sleep Medicine · Meridian, ID
1323
GIURGEVICH, PATRICIA1120
UNIVERSITY OF WASHINGTON1124
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
PATHOLOGY ASSOCIATES MEDICAL LABORATORIES LLC3858
The Polyclinic Pllc
Ambulatory Surgical Center · Seattle, WA
38110
SWEDISH HEALTH SERVICES2649
DYNACARE NORTHWEST, INC1741
Arpita Swami
Diagnostic Radiology · Spokane, WA
1520
SHAFFER, ANITA1223
CORDOVA, MARC1226
David Chang
Sleep Medicine · Meridian, ID
1216
UNIVERSITY OF WASHINGTON1222
James Willems
Cardiology · Seattle, WA
1118
O'NEILL, BRUCE1129
GIURGEVICH, PATRICIA1117
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
1,938
Unique beneficiaries
—
Total services
2,218
Distinct HCPCS
14
Medicare payment
$148K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 373 Ophthalmology providers in WA — above median (cohort median 2,090).
PRESCRIBING · PART D · 2024
Total Rx claims
1,341
Beneficiaries
—
Total drug cost
$351K
Distinct drugs
18
Brand share
39.6%
Top prescribed drugs
Latanoprost567 claims
Cyclosporine126 claims
Dorzolamide Hcl/Timolol Maleat74 claims
Neomycin/Polymyxin B/Dexametha72 claims
Timolol Maleate71 claims
QUALITY · MIPS · 2024
No data available for this provider in 2024.
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$210
Payment records
6
By payment type
Food and Beverage$210