DR. STEPHEN L TAM MD
NPI 1689738478
Internal Medicine in Las Vegas, NV
About Dr. Stephen L Tam Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. STEPHEN L TAM MD (NPI 1689738478) is an individual internal medicine provider in Las Vegas, Nevada, licensed in Nevada (12069) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS and is a graduate of Other (2001).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Stephen L Tam Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Stephen Tam reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Las Vegas, NV 89146
- Reassigned Medicare billing, Nevada enrollment
- 21 clinicians in this Medicare group
Las Vegas, NV 89119
- Reassigned Medicare billing, Nevada enrollment
- 14 clinicians in this Medicare group
Las Vegas, NV 89119
- Reassigned Medicare billing, Nevada enrollment
- 6 clinicians in this Medicare group
Las Vegas, NV 89123
- Reassigned Medicare billing, Nevada enrollment
- 11 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 18
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 89118 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Stephen Tam's NPI number?
The NPI number for Stephen Tam is 1689738478. It was assigned to this individual provider in the NPPES registry on December 19, 2006.
Where is Stephen Tam located?
Stephen Tam practices at 5380 S Rainbow #110, Las Vegas, NV 89118. The listed phone number is (702) 838-3889.
What is Stephen Tam's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Stephen Tam enrolled in Medicare?
Yes. Stephen Tam is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Stephen Tam's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Tam reassigns Medicare benefits to 4 organizations: Vegas Valley Primary Care (Las Vegas, NV), Brain Power Medical Center LLC (Las Vegas, NV), 1st Clark County Medical Clinic LLC (Las Vegas, NV) and Mind Power Behavioral Services LLC (Las Vegas, NV). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Stephen Tam's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Stephen Tam was last updated on December 13, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.