What is Maggie Chau's specialty?

Maggie Chau (NPI 1568576445) is a Medicare-billing provider whose primary specialty is Internal Medicine in San Jose, CA.

Where does Maggie Chau practice?

Maggie Chau practices in San Jose, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1568576445.

How much does Medicare pay Maggie Chau?

Maggie Chau (NPI 1568576445) received approximately $28K in total Medicare Part B payments, serving 87 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1568576445

Maggie ChauDO

Internal MedicineSan Jose, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

178

Unique beneficiaries

—

Total services

330

Distinct HCPCS

Medicare payment

$22K

Peer benchmark

Total Medicare services vs. 10,499 Internal Medicine providers in CA — below median (cohort median 531).

PRESCRIBING · PART D · 2024

Total Rx claims

10,356

Beneficiaries

—

Total drug cost

$1.0M

Distinct drugs

123

Brand share

18.8%

Top prescribed drugs

Atorvastatin Calcium1,246 claims

Losartan Potassium678 claims

Metoprolol Succinate673 claims

Amlodipine Besylate540 claims

Metformin Hcl468 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$2K

Payment records

By payment type

Food and Beverage$2K

Top paying entities

Food and Beverage$2K

REFERRAL NETWORK

Where Maggie Chau'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). 6 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
SAN JOSE HEALTHCARE SYSTEM, L.P.	72	276
Danny Luong Ophthalmology · San Jose, CA	25	56
Conway Lien Diagnostic Radiology · Stanford, CA	24	79
Keith Kwok Diagnostic Radiology · Tracy, CA	18	63
Thomas Lei Pulmonary Disease · San Jose, CA	14	78
Jinjian Chen Physical Therapist in Private Practice · San Jose, CA	11	79

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.

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