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PROVIDER PROFILE · NPI 1366558322

Guillermo CastilloM.D.

Family PracticeSan Diego, CAI
CROSS-REFERENCE

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ProviderScore
OIG/SAM exclusion screening, sanctions history
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MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
27
Unique beneficiaries
—
Total services
27
Distinct HCPCS
1
Medicare payment
$20K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 8,228 Family Practice providers in CA — bottom quintile (cohort median 411).
QUALITY · MIPS · 2024
No data available for this provider in 2024.
PRESCRIBING · PART D · 2024
Total Rx claims
1,229
Beneficiaries
—
Total drug cost
$117K
Distinct drugs
43
Brand share
17.4%
Top prescribed drugs
Trazodone Hcl89 claims
Atorvastatin Calcium87 claims
Amlodipine Besylate62 claims
Furosemide51 claims
Metformin Hcl48 claims
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$350
Payment records
6
By payment type
Food and Beverage$350
REFERRAL NETWORK

Where Guillermo Castillo'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). 75 inbound referrers · 143 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
SHARP CHULA VISTA MEDICAL CENTER4051,571
American Medical Response Ambulance Service, Inc.
Ambulance Service Provider · San Diego, CA
202722
Luis Fiallo
Critical Care (Intensivists) · El Centro, CA
123623
SDXRAY & LAB INC1091,354
Scott Boles
Diagnostic Radiology · San Diego, CA
107435
Joel Sigeti
Diagnostic Radiology · San Diego, CA
96363
Renato De La Rosa
Internal Medicine · Chula Vista, CA
88266
SAN DIEGO MEDICAL SERVICES ENTERPRISE, LLC85383
PRIME HEALTHCARE PARADISE VALLEY LLC83298
Saleem Ishaque
Psychiatry & Neurology · National City, CA
75457
Shanoe Cutts
Diagnostic Radiology · San Diego, CA
74275
Unilab Corporation
Clinical Laboratory · West Hills, CA
65261
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
SHARP CHULA VISTA MEDICAL CENTER3931,114
AETAS HEALTH SERVICES149970
Luis Fiallo
Critical Care (Intensivists) · El Centro, CA
124447
SDXRAY & LAB INC1221,641
Mehran Moussavian
Cardiology · Chula Vista, CA
112842
AMERICAN MEDICAL RESPONSE OF SAN DIEGO, INC.110458
FAIRBANKS, MICHAEL103342
SHARP CHULA VISTA MEDICAL CENTER96330
PRAGER, ROBERT88266
Norman Chen
Diagnostic Radiology · San Diego, CA
87297
Saleem Ishaque
Psychiatry & Neurology · National City, CA
80495
WYNN, BRENTON80572
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.