Constantine Tziros, MD
NPI 1215193529 · Cardiovascular Disease Physician · Fairfax, VA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Constantine Tziros, MD is a Cardiovascular Disease Physician provider in Fairfax, VA (NPI 1215193529).
Provider details
- NPI number
- 1215193529
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD036351 (DC)
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 tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
99 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 87 | $15 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 12 | $72 |
Typical Medicare-allowed amounts for these services range $15–$72 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 238 | 95 |
| Metoprolol Tartrate | 202 | 88 |
| Metoprolol Succinate | 158 | 64 |
| Isosorbide Mononitratebrand: Isosorbide Mononitrate Er | 150 | 54 |
| Sacubitril/Valsartanbrand: Entresto | 102 | 37 |
| Atorvastatin Calcium | 98 | 37 |
| Empagliflozin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-08-06
- Last updated
- 2021-06-12
- Certified
- 2021-06-12
Frequently asked questions
- What is Constantine Tziros's NPI number?
- Constantine Tziros's National Provider Identifier (NPI) is 1215193529, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Constantine Tziros's specialty?
- Constantine Tziros is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Constantine Tziros located?
- Constantine Tziros's practice location on file with NPPES is 12011 Lee Jackson Memorial Hwy, Fairfax, VA 22033-3310.
- What is Constantine Tziros's phone number?
- The practice phone number listed in the NPPES registry for Constantine Tziros is (703) 383-5400.
- Does Constantine Tziros accept Medicare?
- Constantine Tziros is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Constantine Tziros's NPI active?
- Yes — Constantine Tziros's NPI (1215193529) is active in the NPPES registry as of the last update on 2021-06-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.