What is Stephen Tam's specialty?

Stephen Tam (NPI 1689738478) is a Medicare-billing provider whose primary specialty is Internal Medicine in Las Vegas, NV.

Where does Stephen Tam practice?

Stephen Tam practices in Las Vegas, NV, based on the location reported in the CMS Medicare provider datasets for NPI 1689738478.

How much does Medicare pay Stephen Tam?

Stephen Tam (NPI 1689738478) received approximately $550K in total Medicare Part B payments, serving 248 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1689738478

Stephen TamMD

Internal MedicineLas Vegas, NVI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

958

Unique beneficiaries

—

Total services

14,011

Distinct HCPCS

Medicare payment

$546K

Peer benchmark

Total Medicare services vs. 818 Internal Medicine providers in NV — top quintile (cohort median 684).

PRESCRIBING · PART D · 2024

Total Rx claims

201

Beneficiaries

—

Total drug cost

$2K

Distinct drugs

Brand share

27.9%

Top prescribed drugs

Lisinopril31 claims

Albuterol Sulfate30 claims

Gabapentin27 claims

Atorvastatin Calcium19 claims

Trazodone Hcl14 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$219

Payment records

By payment type

Travel and Lodging$219

Top paying entities

Travel and Lodging$219

REFERRAL NETWORK

Where Stephen Tam'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). 88 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Medicwest Ambulance, Inc. Ambulance Service Provider · North Las Vegas, NV	129	424
Nayab Zafar Cardiology · Las Vegas, NV	119	497
Mercy Inc Ambulance Service Provider · Las Vegas, NV	115	531
Dean Berthoty Diagnostic Radiology · Las Vegas, NV	80	198
Ahmad Badery Internal Medicine · Las Vegas, NV	71	376
Steven Davis Diagnostic Radiology · Las Vegas, NV	69	273
Richard Schwartz Diagnostic Radiology · Las Vegas, NV	67	179
VALLEY HOSPITAL MEDICAL CENTER	66	283
Kelly Gardner Diagnostic Radiology · Las Vegas, NV	63	194
Joshua Owen Diagnostic Radiology · Sacramento, CA	59	155
Quest Diagnostics Incorporated Clinical Laboratory · Las Vegas, NV	58	301
Kitty Ho Cain Diagnostic Radiology · Sacramento, CA	58	200

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