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PROVIDER PROFILE · NPI 1285620443

William TsaiD.O.

PRACTICEWILLIAM TSAI D O INCSee all providers at this practice →
Family PracticeUpland, CAI
CROSS-REFERENCE

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FACILITY AFFILIATIONS

Hospital & Facility Affiliations (5)

CCN 751690
Hospice
CCN B31605
Hospice
CCN 050099
Hospital
CCN 055126
Nursing home
CCN 055718
Nursing home
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
178
Unique beneficiaries
—
Total services
634
Distinct HCPCS
8
Medicare payment
$40K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 8,228 Family Practice providers in CA — above median (cohort median 411).
PRESCRIBING · PART D · 2024
Total Rx claims
9,430
Beneficiaries
—
Total drug cost
$954K
Distinct drugs
154
Brand share
19.2%
Top prescribed drugs
Atorvastatin Calcium805 claims
Amlodipine Besylate533 claims
Levothyroxine Sodium391 claims
Losartan Potassium367 claims
Metformin Hcl288 claims
QUALITY · MIPS · 2024
No data available for this provider in 2024.
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$1K
Payment records
52
By payment type
Food and Beverage$1K
REFERRAL NETWORK

Where William Tsai'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). 29 inbound referrers · 58 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
Unilab Corporation
Clinical Laboratory · West Hills, CA
51144
POMONA VALLEY HOSPITAL MEDICAL CENTER44144
Gary Lai
Internal Medicine · Chino, CA
36279
Gene Hong
Internal Medicine · Montclair, CA
29295
THC - ORANGE COUNTY, LLC29115
Shahram Khorrami
Pulmonary Disease · Montclair, CA
28235
SCHAEFER AMBULANCE SERVICE, INC2781
CELEBRITY HOMEHEALTH INC.27209
Elbert Chang
Pulmonary Disease · Montclair, CA
27239
Aaron Jun
Diagnostic Radiology · Rancho Cucamonga, CA
25112
Medical Diagnostic Laboratory Llc
Clinical Laboratory · La Verne, CA
2178
KAN-DI-KI LLC19228
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
Kan-Di-Ki Llc
Portable X-Ray Supplier · North Hollywood, CA
821,382
American Medical Response Of Inland Empire
Ambulance Service Provider · Redlands, CA
71373
WILLIAM TSAI D O INC60248
PRIME HEALTHCARE SERVICES - MONTCLAIR, LLC59214
POMONA VALLEY HOSPITAL MEDICAL CENTER47150
SAN ANTONIO REGIONAL HOSPITAL45184
Unilab Corporation
Clinical Laboratory · West Hills, CA
44143
Gary Lai
Internal Medicine · Chino, CA
44341
Joshua Koh
Psychiatry · San Dimas, CA
42233
COBB, STEVEN39166
Shahram Khorrami
Pulmonary Disease · Montclair, CA
33279
KONGCHALALAI, AMARIN30382
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.