Stephen Portz, M.D.
NPI 1811933500 · Cardiovascular Disease Physician · Las Vegas, NV
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Portz, M.D. is a Cardiovascular Disease Physician provider in Las Vegas, NV (NPI 1811933500).
Provider details
- NPI number
- 1811933500
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 5648 (NV)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
1,522 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 773 | $124 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Tracing93005 | 201 | $6 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 128 | $184 |
| Technetium Tc-99m Sestamibi, Diagnostic, Per Study DoseA9500 | 126 | $42 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Supervision and Review By Physician93015 | 74 | $61 |
| Nuclear Medicine Studies of Heart Muscle at Rest and With Stress and Spect |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 46 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 290 | 103 |
| Metoprolol Succinate | 203 | 76 |
| Amlodipine Besylate | 193 | 72 |
| Apixabanbrand: Eliquis | 174 | 54 |
| Rosuvastatin Calcium | 167 | 55 |
| Metoprolol Tartrate | 113 | 41 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$74 across 4 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
- 2006-06-21
- Last updated
- 2025-10-13
- Certified
- 2025-10-13
Frequently asked questions
- What is Stephen Portz's NPI number?
- Stephen Portz's National Provider Identifier (NPI) is 1811933500, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Portz's specialty?
- Stephen Portz is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Portz located?
- Stephen Portz's practice location on file with NPPES is 3131 La Canada St Ste 140, Las Vegas, NV 89169-2579.
- What is Stephen Portz's phone number?
- The practice phone number listed in the NPPES registry for Stephen Portz is (702) 933-9400.
- Does Stephen Portz accept Medicare?
- Stephen Portz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Portz's NPI active?
- Yes — Stephen Portz's NPI (1811933500) is active in the NPPES registry as of the last update on 2025-10-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.