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 1558516963

Hai NguyenM.D.

Internal MedicineSanta Ana, CAI
CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore
OIG/SAM exclusion screening, sanctions history
© 2026 CareTrace
PricingContactPrivacyTerms
PRESCRIBING · PART D · 2024
Total Rx claims
903
Beneficiaries
—
Total drug cost
$27K
Distinct drugs
31
Brand share
10.9%
Top prescribed drugs
Pantoprazole Sodium68 claims
Cephalexin65 claims
Atorvastatin Calcium56 claims
Cefdinir53 claims
Metoprolol Tartrate50 claims
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
477
Unique beneficiaries
—
Total services
1,830
Distinct HCPCS
5
Medicare payment
$154K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 10,499 Internal Medicine providers in CA — top quintile (cohort median 531).
QUALITY · MIPS · 2024
No data available for this provider in 2024.
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
No data available for this provider in 2024.
REFERRAL NETWORK

Where Hai Nguyen'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). 63 inbound referrers · 0 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
RIVERSIDE HEALTHCARE SYSTEM, L.P.186610
HAI DONG NGUYEN, M.D., CORP.160448
Jason Beck
Diagnostic Radiology · Temecula, CA
109402
Douglas Green
Diagnostic Radiology · Temecula, CA
95396
David Lawson
Diagnostic Radiology · Wildomar, CA
93330
David Scafidi
Diagnostic Radiology · Wildomar, CA
87305
James Stapakis
Diagnostic Radiology · Wildomar, CA
77233
UNIVERSAL HEALTH SERVICES OF RANCHO SPRINGS INC73136
Ardavan Afshar
Diagnostic Radiology · Riverside, CA
66191
Johnny Liquete
Infectious Disease · Moreno Valley, CA
50177
Robin Abdelmalik
Cardiology · Temecula, CA
47171
Indraneel Chakrabarty
Gastroenterology · Temecula, CA
46201
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.