Thomas Mezzetti, MD
NPI 1083668453 · Anatomic Pathology & Clinical Pathology Physician · Hartford, CT
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Mezzetti, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Hartford, CT (NPI 1083668453).
Provider details
- NPI number
- 1083668453
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 257784 (MA)
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
20 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
1,650 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) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 934 | $37 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 193 | $27 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 152 | $34 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 86 | $81 |
| Microscopic Genetic Analysis of Tumor, Manual88360 | 56 | $41 |
| Pathology Examination of Tissue Using a Microscope, Moderately Low Complexity88304 | 52 | $11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-20
- Last updated
- 2025-04-01
- Certified
- 2025-04-01
Frequently asked questions
- What is Thomas Mezzetti's NPI number?
- Thomas Mezzetti's National Provider Identifier (NPI) is 1083668453, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Mezzetti's specialty?
- Thomas Mezzetti is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Mezzetti located?
- Thomas Mezzetti's practice location on file with NPPES is 80 Seymour St, Hartford, CT 06115-2701.
- What is Thomas Mezzetti's phone number?
- The practice phone number listed in the NPPES registry for Thomas Mezzetti is (860) 545-2866.
- Does Thomas Mezzetti accept Medicare?
- Thomas Mezzetti is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Mezzetti's NPI active?
- Yes — Thomas Mezzetti's NPI (1083668453) is active in the NPPES registry as of the last update on 2025-04-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.