What is Sylvia Chi-Wu's specialty?

Sylvia Chi-Wu (NPI 1144308230) is a Medicare-billing provider whose primary specialty is Nephrology in Walnut Creek, CA.

Where does Sylvia Chi-Wu practice?

Sylvia Chi-Wu practices in Walnut Creek, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1144308230.

How much does Medicare pay Sylvia Chi-Wu?

Sylvia Chi-Wu (NPI 1144308230) received approximately $5K in total Medicare Part B payments, serving 26 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1144308230

Sylvia Chi-WuMD

PRACTICEKAISERSee all providers at this practice →

NephrologyWalnut Creek, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

Distinct HCPCS

Medicare payment

$4K

Peer benchmark

Total Medicare services vs. 985 Nephrology providers in CA — bottom quintile (cohort median 1,482).

PRESCRIBING · PART D · 2024

Total Rx claims

819

Beneficiaries

—

Total drug cost

$61K

Distinct drugs

Brand share

10.6%

Top prescribed drugs

Furosemide106 claims

Amlodipine Besylate65 claims

Losartan Potassium60 claims

Empagliflozin56 claims

Sevelamer Carbonate51 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (3)

CCN 052841

Dialysis facility

CCN 552512

Dialysis facility

CCN 050760

Hospital

REFERRAL NETWORK

Where Sylvia Chi-Wu'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). 2 inbound referrers · 3 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
TOTAL RENAL CARE INC	16	92
NPI 1255335535	15	89

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
KAISER FOUNDATION HOSPITALS	43	108
TOTAL RENAL CARE INC	18	214
NPI 1255335535	15	97

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.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events