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Thomas C Gniadek

Thomas C Gniadek, MD

Endocrinology, Diabetes & Metabolism, Endocrinology, Internal Medicine

Provider Ratings

4.9 out of 5 (285 ratings)

Provider Groups

  • Trinity Health Of New England Care Alliance

  • Trinity Health Of New England Medical Group

Primary Contact

203-755-7711
Online Scheduling
Accepting New Patients
Online Scheduling
Provider Groups

  • Trinity Health Of New England Care Alliance

  • Trinity Health Of New England Medical Group

Primary Contact
203-755-7711
Print Share

Services & Specialties

Areas of Specialization

  • Endocrinology, Diabetes & Metabolism
  • Endocrinology
  • Internal Medicine

Clinical Interests

Conditions Treated

  • Endocrinology, Diabetes & Metabolism
  • Diabetes
  • Diabetes and Endocrinology

Locations & Contact

Primary Location

Trinity Health Of New England Medical Group - Prospect Endocrinology

166 Waterbury Rd
Ste 202
Prospect, CT 06712

203-755-7711 View Details

Additional Resources

Education & Certifications

Education

Education:
Fairfield University (1972)

Education:
University of Connecticut (1976)

Internship:
Saint Mary's Hospital (Internal Medicine) (1977)

Residency:
Saint Mary's Hospital (Internal Medicine) (1979)

Fellowship:
University of Michigan Hospitals & Health Centers (Endocrinology) (1981)

Board Certifications

Endocrinology, Diabetes & Metabolism, American Board of Internal Medicine Subspecialty Endocrinology, Diabetes and Metabolism (1981)

American Board of Internal Medicine (1979)

Provider Groups

Trinity Health Of New England Care Alliance

Trinity Health Of New England Medical Group

Provider Ratings

The following ratings and reviews are based on verified feedback collected from independently administered patient experience surveys. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy. Learn More >

4.9 out of 5

(285 ratings)

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

23 Reviews

07/22/2026

Very good

07/14/2026

Great Doctor

07/14/2026

Excellent doctor

06/10/2026

Excellent

05/12/2026

Excellent

05/06/2026

Excellent

02/19/2026

Wonderful doctor

01/29/2026

I’ve gone to Dr. Gniadek for more than 45 years and I’m always happy to see him.

01/29/2026

Dr.Gniadek is always listening to your questions and gives explanations that are easy to understand

01/22/2026

He’s the best!!!

01/22/2026

None at this time.

01/22/2026

Always very professional, thoughtful and takes the time to explain things in laymanterminology.

12/18/2025

Great

12/18/2025

Best Dr I’ve even seen. He explains everything so thoroughly to me despite questions that may seem unnecessary to ask.

12/04/2025

He is a totally kind and considerate person. He listens and offers solutions.

12/02/2025

Very positive experience.

11/20/2025

outstanding!

10/29/2025

He is an excellent doctor. Friendly, great communication, and very professional

10/29/2025

He is amazing!

10/29/2025

DR. G. always answer my questions gives me great advise.

10/22/2025

Wonderful

10/15/2025

D.Gnaidek is great about explaining things in layman's terms

09/17/2025

excellent doctor
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Online Scheduling 203-755-7711

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