What is Hai Nguyen's specialty?

Hai Nguyen (NPI 1427055631) is a Medicare-billing provider whose primary specialty is Internal Medicine in Oakland, CA.

Where does Hai Nguyen practice?

Hai Nguyen practices in Oakland, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1427055631.

How much does Medicare pay Hai Nguyen?

Medicare Part B utilization, prescribing (Part D), MIPS quality scores, and industry payments for Hai Nguyen (NPI 1427055631) are detailed on this CareTrace profile.

PROVIDER PROFILE · NPI 1427055631

Hai Nguyen

Internal MedicineOakland, CAI

MEDICARE UTILIZATION · PART B · 2024

No data available for this provider in 2024.

PRESCRIBING · PART D · 2024

Total Rx claims

1,837

Beneficiaries

—

Total drug cost

$67K

Distinct drugs

Brand share

27.9%

Top prescribed drugs

Albuterol Sulfate301 claims

Promethazine Hcl300 claims

Fluticasone Propionate146 claims

Atorvastatin Calcium141 claims

Amlodipine Besylate97 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.

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). 1 inbound referrers · 3 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
ALAMEDA HEALTH SYSTEM	11	29

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
SUTTER EAST BAY HOSPITALS	42	135
Unilab Corporation Clinical Laboratory · Sacramento, CA	12	38
Unilab Corporation Clinical Laboratory · San Jose, CA	12	23

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