Stephen Tam, MD
NPI 1689738478 · Internal Medicine Physician · Las Vegas, NV
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Tam, MD is a Internal Medicine Physician provider in Las Vegas, NV (NPI 1689738478).
Provider details
- NPI number
- 1689738478
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 12069 (NV)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
14,011 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 3,872 | $104 |
| Application of Electrical Stimulation With Therapist Present, Each 15 Minutes97032 | 2,198 | $11 |
| Therapy Procedure to Re-Educate Brain-To-Nerve-To-Muscle Function, Each 15 Minutes97112 | 2,171 | $28 |
| Office Or Other Outpatient Visit for the Evaluation and Management of Established Patient That May Not Require Presence of Healthcare Professional99211 | 1,577 | $23 |
| Biofeedback Training90901 | 948 | $40 |
| Application of Blood Vessel Compression Device97016 | 936 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 31 | 11 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 30 | — |
| Gabapentin | 27 | — |
| Atorvastatin Calcium | 19 | — |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 14 | — |
| Ibuprofen | 14 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,400 across 20 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-19
- Last updated
- 2007-12-13
Frequently asked questions
- What is Stephen Tam's NPI number?
- Stephen Tam's National Provider Identifier (NPI) is 1689738478, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Tam's specialty?
- Stephen Tam is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Tam located?
- Stephen Tam's practice location on file with NPPES is 5380 S Rainbow, Las Vegas, NV 89118-1878.
- What is Stephen Tam's phone number?
- The practice phone number listed in the NPPES registry for Stephen Tam is (702) 838-3889.
- Does Stephen Tam accept Medicare?
- Stephen Tam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Tam's NPI active?
- Yes — Stephen Tam's NPI (1689738478) is active in the NPPES registry as of the last update on 2007-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.