Themistoklis Nissirios, MD
NPI 1194925370 · Cardiovascular Disease Physician · Monroe, NY
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Themistoklis Nissirios, MD is a Cardiovascular Disease Physician provider in Monroe, NY (NPI 1194925370).
Provider details
- NPI number
- 1194925370
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 253483 (NY)
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
18 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
3,618 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 | 959 | $140 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 521 | $18 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 446 | $16 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 321 | $218 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 270 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 52 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 492 | 190 |
| Metoprolol Succinate | 448 | 171 |
| Apixabanbrand: Eliquis | 301 | 89 |
| Amlodipine Besylate | 266 | 106 |
| Atorvastatin Calcium | 256 | 90 |
| Torsemide | 203 | 83 |
| Carvedilol | 145 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$230 across 14 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
- 2007-07-25
- Last updated
- 2020-10-12
- Certified
- 2020-10-12
Frequently asked questions
- What is Themistoklis Nissirios's NPI number?
- Themistoklis Nissirios's National Provider Identifier (NPI) is 1194925370, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Themistoklis Nissirios's specialty?
- Themistoklis Nissirios is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Themistoklis Nissirios located?
- Themistoklis Nissirios's practice location on file with NPPES is 855 State Route 17m, Monroe, NY 10950-1600.
- What is Themistoklis Nissirios's phone number?
- The practice phone number listed in the NPPES registry for Themistoklis Nissirios is (845) 703-6999.
- Does Themistoklis Nissirios accept Medicare?
- Themistoklis Nissirios is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Themistoklis Nissirios's NPI active?
- Yes — Themistoklis Nissirios's NPI (1194925370) is active in the NPPES registry as of the last update on 2020-10-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.