What is Stephen Nguyen's specialty?

Stephen Nguyen (NPI 1619976644) is a Medicare-billing provider whose primary specialty is Internal Medicine in Sun City, CA.

Where does Stephen Nguyen practice?

Stephen Nguyen practices in Sun City, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1619976644.

How much does Medicare pay Stephen Nguyen?

Stephen Nguyen (NPI 1619976644) received approximately $435K in total Medicare Part B payments, serving 675 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1619976644

Stephen NguyenMD

Internal MedicineSun City, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

7,838

Unique beneficiaries

—

Total services

10,248

Distinct HCPCS

Medicare payment

$418K

Peer benchmark

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

PRESCRIBING · PART D · 2024

Total Rx claims

12,930

Beneficiaries

—

Total drug cost

$1.1M

Distinct drugs

171

Brand share

21.5%

Top prescribed drugs

Atorvastatin Calcium823 claims

Rosuvastatin Calcium778 claims

Levothyroxine Sodium625 claims

Amlodipine Besylate411 claims

Tamsulosin Hcl300 claims

QUALITY · MIPS · 2024

Final MIPS score

85.8

Quality

92.7

Cost

62.3

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

0.45%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$858

Payment records

By payment type

Food and Beverage$848

Education$10

Top paying entities

Food and Beverage$848

Education$10

REFERRAL NETWORK

Where Stephen 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). 8 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · West Hills, CA	56	227
Md Tox Laboratory Clinical Laboratory · Irvine, CA	52	94
William Kelly Diagnostic Radiology · Palm Desert, CA	34	78
UNIVERSAL HEALTH SERVICES OF RANCHO SPRINGS INC	19	44
William Smith Ophthalmology · Temecula, CA	12	19
Alvin Hensel Diagnostic Radiology · Hemet, CA	12	42
KPC GLOBAL MEDICAL CENTERS, INC.	11	36
Herman Lu Cardiology · Murrieta, CA	11	35

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