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PROVIDER PROFILE · NPI 1538238118

William GillespieM.D.

PsychiatryGlendora, CAI
CROSS-REFERENCE

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MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
2,312
Unique beneficiaries
—
Total services
5,415
Distinct HCPCS
11
Medicare payment
$372K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 2,213 Psychiatry providers in CA — top quintile (cohort median 203).
PRESCRIBING · PART D · 2024
Total Rx claims
18,974
Beneficiaries
—
Total drug cost
$1.7M
Distinct drugs
65
Brand share
13.3%
Top prescribed drugs
Risperidone1,606 claims
Olanzapine1,353 claims
Divalproex Sodium1,330 claims
Escitalopram Oxalate1,245 claims
Trazodone Hcl1,243 claims
QUALITY · MIPS · 2024
Final MIPS score
75.0
Quality
0.0
Cost
53.1
Improvement activities
0.0
Promoting interop.
0.0
Payment adjustment
0.00%
Individual
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$3K
Payment records
178
By payment type
Food and Beverage$3K
Education$55
REFERRAL NETWORK

Where William Gillespie'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). 59 inbound referrers · 0 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
SUCCESS HEALTHCARE 1 LLC3964,323
Martin Schwartz
Diagnostic Radiology · Los Angeles, CA
3703,608
Loraine Diego
Family Practice · Los Angeles, CA
2372,886
TRANS LIFE INC.2001,731
Caroline Sauer
Psychologist, Clinical · Glendora, CA
19410,253
Royalty Ambulance Services Inc.
Ambulance Service Provider · Los Angeles, CA
1651,463
CENTRAL CITY COMMUNITY HEALTH CENTER112601
Mehmet Demirozu
Internal Medicine · Hawthorne, CA
831,248
Farshid Nejad
Podiatry · Beverly Hills, CA
58143
Michelle Chan
Internal Medicine · San Gabriel, CA
541,230
SMITH, LEMUEL52543
Unilab Corporation
Clinical Laboratory · West Hills, CA
51437
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.