Doctor profile · Federal record

Dr. Thomas Mezzetti, MD

Anatomic Pathology & Clinical Pathology Physician (CMS: Pathology) · Anatomic Pathology & Clinical Pathology Physician · Hartford, CT

  • NPI 1083668453
  • Accepts Medicare
  • 34 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
80 Seymour St
Hartford, CT 061152701
(860) 545-2866
Mailing address
80 Seymour St Ste 300
Hartford, CT 061152701

Credentials & registration

NPPES · NUCC
NPI registered
May 2006 — 20 yrs on file
Profile last updated
April 1, 2025
Year of graduation
1992 — 34 yrs since
Specialty taxonomy
207ZP0102X — NUCC code
State licenses (2)
Connecticut #044080 · Massachusetts #257784

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1083668453. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
1,392
Distinct HCPCS
10
Medicare allowed
$54,827
HCPCS Description Services Patients Avg allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity 841 440 $38
88341 Special stained specimen slides to examine tissue, each additional procedure 149 44 $29
88342 Special stained specimen slides to examine tissue, initial procedure 138 109 $35
88307 Pathology examination of tissue using a microscope, moderately high complexity 73 60 $84
88304 Pathology examination of tissue using a microscope, moderately low complexity 55 49 $12
88300 Pathology examination of tissue using a microscope, limited examination 40 32 $5
88360 Microscopic genetic analysis of tumor, manual 38 12 $42
88311 Preparation of tissue for examination by removing any calcium present 23 18 $13
G0416 Surgical pathology, gross and microscopic examinations, for prostate needle biopsy, any method 23 22 $181
88333 Pathology cytologic examination of specimen during surgery, initial site 12 12 $63

In context: peer comparison

Among 9 peers in this city , average services per provider: 103. This provider delivers 14× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Thomas Mezzetti's medical specialty?
Dr. Thomas Mezzetti practices Anatomic Pathology & Clinical Pathology Physician in Hartford, CT.
Where does Dr. Thomas Mezzetti practice?
Dr. Thomas Mezzetti practices at 80 Seymour St, Hartford, CT 061152701. Office phone: 8605452866.
What is Dr. Thomas Mezzetti's NPI?
Dr. Thomas Mezzetti's National Provider Identifier (NPI) is 1083668453, issued by NPPES.
Does Dr. Thomas Mezzetti accept Medicare assignment?
Yes. Dr. Thomas Mezzetti accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Thomas Mezzetti commonly perform?
Top Medicare-reported procedures in 2023: Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305); Special stained specimen slides to examine tissue, each additional procedure (HCPCS 88341); Special stained specimen slides to examine tissue, initial procedure (HCPCS 88342). Source: CMS Medicare Physician & Other Practitioners file.