Thomas C Gniadek

Thomas C Gniadek, MD

Endocrinology, Diabetes & Metabolism, Endocrinology, Internal Medicine

Provider Groups

  • Trinity Health Of New England Medical Group

  • Trinity Health Of New England Care Alliance

Primary Contact

203-755-7711
Provider Groups
  • Trinity Health Of New England Medical Group

  • Trinity Health Of New England Care Alliance

Primary Contact
203-755-7711

Services & Specialties

Areas of Specialization

  • Endocrinology
  • Endocrinology, Diabetes & Metabolism
  • Internal Medicine

Clinical Interests

Conditions Treated

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

Locations & Contact

Primary Location

Trinity Health Of New England Medical Group

166 Waterbury Rd
Ste 202
Prospect, CT 06712

Additional Resources

Education & Certifications

Education

Education:
Fairfield University (1972)

Education:
University of Connecticut (1976)

Internship:
Saint Mary's Hospital (1977)

Residency:
Saint Mary's Hospital (1979)

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

Board Certifications

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

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

Internal Medicine, Internal Medicine, American Board of (1979)

Provider Groups

Trinity Health Of New England Medical Group

Trinity Health Of New England Care Alliance

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

(322 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.

94 Reviews

05/27/2025

Dr G is the best!!!

05/27/2025

Dr Gniadek is excellent

05/22/2025

Hope Dr. G. does not retire.

05/21/2025

To Trinity: please be sure to renew Dr Gniadeks contract this fall, dedicated doctors are hard to find

05/21/2025

100% perfect

05/20/2025

Great doctor

05/14/2025

Very efficient office

05/13/2025

explains things very clearly

05/07/2025

He a wonderful Dr. Very caring.

05/07/2025

Excellent doctor and staff.

05/01/2025

Dr Gniadek is everything you want in a doctor..

05/01/2025

Great experience

04/30/2025

Keep up the good work.

04/30/2025

Dr. gniadek has been there always to help me and my wife Marilyn as needed.

04/30/2025

Great Care with this office and Dr. Gniadec

04/24/2025

I have known Dr Gniadek since the 70's as my father's doctor. I became a patient in 2002 when I moved back to Ct. He has always made me feel comfortable and important as a patient. I am very upset at losing him as my primary care doctor, but grateful that he will be able to continue seeing me as a diabetic patient. I am quite nervous and having panic attacks at having to find a new primary care doctor - especially when I was told several months ago that his contract with Trinity didn't end until the end of the year. I thought I would have several more months with him. He is, and has as long as I've known him, been an excellent doctor!

04/22/2025

Everyone is friendly and professional

04/22/2025

My wife and I completely trust them and their decisions

04/15/2025

Excellent provider

04/15/2025

He is wonderful smart kind and very helpful in my life. He is always professional and very informative. He is real.

04/15/2025

Wonderful staff and doctor. pleasant experience

04/02/2025

Dr, Gniadek in the morning is terrific.

04/02/2025

Dr. Gniadek is so knowledgeable, and his staff is the best.

03/20/2025

I feel fortunate to be a patient of Dr Gniadek!

03/12/2025

Dr. Gniadek always answers all my questions and provides clear explanations

03/05/2025

Dr. Gniadek answered my guestions, and explained in detail what enzymes etc are involved in the difficulties I experience. I have some medical knowledge and appreciate being treated like an intelligent and interested patient.

03/05/2025

This provider has been good. The fight between this provider and another was stressful and frankly ridiculous.

03/04/2025

Excelent

03/04/2025

ITS A PLEASURE COMING TO THIS OFFICE.

02/27/2025

Dr Gniadek was prompt & spent enough time with me

02/26/2025

Love Dr g. He cannot retire!!!

02/26/2025

I'm thankful to have him

02/26/2025

I will miss Dr. Gniadek when he retires.

02/26/2025

They don't make doctors like Dr Gniadek anymore!

02/26/2025

Nice visit went over my health chart

02/20/2025

Very good

02/19/2025

Dr. Gniadek is a great doctor...very professional and knows his stuff!

02/13/2025

Great Doctor who explains everything to me.

01/28/2025

Limited days to be seen in office.

01/23/2025

Excellent

01/22/2025

Dr, Gniadek is a true professional in every sense of the way. He is number ONE!!!

01/21/2025

All is good

01/16/2025

The best!

01/16/2025

Dr Gnaidek

01/16/2025

Goes above n beyond on spending time explaining things

01/15/2025

I can't say enough good things about Dr. Gniadek. He is truly wonderful

01/14/2025

I trust that he will do what's best for me.

01/08/2025

Excellence in listening, caring. And following through. He not only answers my questions, but educates his patients.

01/08/2025

Dr. Gniadek is excellent and super knowledgeable.

01/07/2025

Spent a lot of time with me to explain what was going on

01/07/2025

Do not know what I would do if it was not for Dr, Gniadek he is the best!!!

12/19/2024

Very good, I feel I receive very good care from them wouldn't change a thing.

12/19/2024

Not happy about having to find a new primary physician due to Trinity's decision.

12/19/2024

Great! Very Pleased..

12/17/2024

He answers all my questions

12/05/2024

I trust him with my life. I feel, in many ways, that he has saved my life just by taking that extra step & have me had tests which, indeed, saved me. (as far as I am concerned)

12/03/2024

I appreciate the overall care and most of all commitment to patient care

11/12/2024

Caring, compassionate, professional at all times

11/07/2024

Treatment was immeadiate made recommendations

11/06/2024

Great Diagnostic Physician

11/06/2024

Dr Ginadak listens and explains everything very well he makes sure u have proper information on how to take your medication

10/23/2024

Full staff is wonderful

10/15/2024

Dr Gniadek is the best, don't loose him. I think he's the smartest person I have ever met!

10/15/2024

Always most helpful, and caring.

10/10/2024

Excellent experience

10/09/2024

Doc G, is always friendly,, and knowledgeable.. trust him fully!!!

10/08/2024

Dr.Gniadek is one of the most competent doctors I have ever met. He is also deeply compassionate.

10/03/2024

Dr Gniadek is a very caring professional and spends a lot of time explaining medications to me etc.

10/02/2024

Dr. Thomas Gniadek is a wonderful physician. I enjoy being a patient and I hope he never retires!

10/02/2024

Dr Gniadek always explains things in a manner I can understand.

09/26/2024

Always professional and listened to my remarks.

09/24/2024

Dr Gniadek is excellent

09/24/2024

Dr. Gniadek is a dedicated, compassionate, astute doctor. He is exceptionally smart.

09/19/2024

The best

09/17/2024

Keep up the Good Work! Thank you!

09/12/2024

Fantastic !!!!

09/11/2024

You are blessed to have Dr. Gniadek on your staff, as well as I am.

09/03/2024

Very good

08/21/2024

I have been a patient of Dr. Gniadek for many years and he has always listened to my concerns and took his time with me.

08/20/2024

Excellent experience

08/15/2024

The Last 2 sets of questions were repetitious of the earlier questions, and as I have already said, Dr. Gnaidek is the best

08/15/2024

Already stated

08/13/2024

Same outstanding care provider for his patient who he has seen, addressing all and any issue regarding overall health as the patient advances with Alzheimer's. The care is precise, genuine and empathetic.

08/06/2024

He's kind, considerate & a genius. His "genius" saved my life twice over the many yrs. I have gone to him. He's on top of things for sure!!

08/06/2024

The best

07/25/2024

Great!!!

07/25/2024

Dr Gniadek is the best would recommend him to everyone

07/24/2024

Dr. Gniadek Is the best he is super knowledgeable and takes the time to explain so you fully understand any questions you may have he is excellent in what he does

07/17/2024

Excellent

07/10/2024

Dr. Gniadek is a very good Dr.

07/10/2024

Dr. Gniadek always has an answer for anything I ask him. I can never imagine having to see anyone else.

07/09/2024

Dr G is the best

07/09/2024

Dr. Gniadek spends the time necessary with me and explains things very well 😊

07/09/2024

I've been with Dr. Gniadek for about 40 years. I have always found him to be kind, professional, well versed in many areas and an excellent doctor.
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