Thomas Guarnieri, M.D.
NPI 1275536591 · Clinical Cardiac Electrophysiology Physician · Towson, MD
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Guarnieri, M.D. is a Clinical Cardiac Electrophysiology Physician provider in Towson, MD (NPI 1275536591).
Provider details
- NPI number
- 1275536591
- Entity type
- Individual
- Primary specialty
- Clinical Cardiac Electrophysiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D0018334 (MD)
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
21 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
1,157 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 581 | $132 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 251 | $15 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 129 | $68 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 94 | $205 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 38 | $169 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 457 | 135 |
| Metoprolol Succinate | 453 | 164 |
| Atorvastatin Calcium | 255 | 93 |
| Rosuvastatin Calcium | 190 | 58 |
| Rivaroxabanbrand: Xarelto | 129 | 41 |
| Flecainide Acetate | 129 | 34 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-05-31
- Last updated
- 2010-08-23
Frequently asked questions
- What is Thomas Guarnieri's NPI number?
- Thomas Guarnieri's National Provider Identifier (NPI) is 1275536591, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Guarnieri's specialty?
- Thomas Guarnieri is listed in the NPPES registry with a primary specialty of Clinical Cardiac Electrophysiology Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Guarnieri located?
- Thomas Guarnieri's practice location on file with NPPES is 6569 N Charles St, Towson, MD 21204-6831.
- What is Thomas Guarnieri's phone number?
- The practice phone number listed in the NPPES registry for Thomas Guarnieri is (410) 602-9262.
- Does Thomas Guarnieri accept Medicare?
- Thomas Guarnieri is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Guarnieri's NPI active?
- Yes — Thomas Guarnieri's NPI (1275536591) is active in the NPPES registry as of the last update on 2010-08-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.