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Dr. Diana Leon, MD

Dr. Diana Leon, MD

Obstetrics & Gynecology*

Dr. Diana Leon, MD is an obstetrician gynecologist in East Setauket, NY. She is affiliated with medical facilities such as Mather Hospital and Stony Brook University Hospital. She is accepting new patients and telehealth appointments.

4.1 Star Rating
Based on 27 reviews 4.1 Star Rating (27 reviews)

Practice

100 S Jersey Ave Unit 16 East Setauket, NY 11733
Telehealth available

Dr. Leon is a Healthgrades Choice provider in Obstetrics & Gynecology

The Healthgrades Choice designation helps you understand the most important factors to consider when choosing a healthcare professional. This designation is earned based on four set standards.
Read our methodology

  • Above average experience
  • Good hospital quality
  • Good patient ratings
  • No healthcare sanctions

Experience Check

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Dr. Leon's Reviews

Likelihood to recommend Dr. Leon

4.1
27 ratings, 15 with a written review
5 star
78%
78%
4 star
0%
0%
3 star
0%
0%
2 star
0%
0%
1 star
22%
22%

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Bring a cup of coffee and a good book cause you'll be waiting an hour after your appointment time. Happened in 2023 & 2024. Recent 2025 appoint scheduled for 8 am (her first appointment) was cancelled as I was driving to the office. Adios!
What went well
No results
What could be improved
  • I didn't feel respected
  • Long wait times
Helpful
Mar 27, 2025
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Dr. Leon is great
Dr Leon is wonderful. She takes her time with you, answers any questions you have thoughtfully, never rushes you.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Kim – Oct 25, 2024
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Wonderful Dr
Kind caring and Extremely knowledgeable.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
  • Long wait times
Helpful
Theresa Vecchio – Dec 13, 2023
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The best.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 other person found this helpful
Helpful
Mar 15, 2023
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Excellent GYN
Dr Leone is highly professional, takes her time with me, answers questions and is knowledgeable and informative. I would highly recommend her to anyone.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Diane Marascia – Oct 28, 2022
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Five Stars Outstanding
Dr Leone is an outstanding doctor. She has a warm, relaxed and patient demeanor. Her presents makes you feel relaxed and confident. Her knowledge about my medical history is amazing! She always has relevant questions during the visit. Dr Leone is on top of everything and never forgets the reminders about getting relevant testing. She follows up with phone calls as soon as results are available. The patient never feels rushed or Intimidated about asking questions. I recommend her without hesitation to friends and family. Always a pleasure to spend a little time with this caring physician. Thank you Dr Leone!
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 other person found this helpful
Helpful
Frances Bonell – Jul 30, 2022
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Excellent experience
Dr. Leon was very knowledgeable about everything we discussed, really listened to all of my concerns and explained everything thoroughly. I'm so glad I found her!
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Karen U. – Feb 25, 2022
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Dr Leon is excellent. She is highly professional and has an outstanding bedside manner. My teenage daughter also saw her. Dr. Leon made my daughter feel completely at ease.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
  • Long wait times
Helpful
Sep 25, 2021
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Dr. Leon is a wonderful and caring doctor. Moreover, she delivered me, my best gift, my son. I was induced. She was there to make sure I had a successful childbirth. She kept me safe and did her best to make sure he was born vaginally. She was careful and calm. She handled complications and challenges with such incredible ease. I was induced on Wednesday and had my water broken Thursday. She came in on Friday and had to start up the induction process again. She also handled all other complications with total ease and confidence. My baby was born so beautiful and healthy and alert. She stayed with us throughout the entire delivery. I am so grateful for Dr. Leon. I cannot thank her enough for how seriously she takes her profession and for delivering my greatest gift.
What went well
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Kristyn – Sep 01, 2020
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Dr Leon was very caring. She did not rush through the exam. Very professional. The staff was excellent.
What went well
No results
What could be improved
No results
1 other person found this helpful
Helpful
Jan 23, 2020
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She is gentle and caring. She takes her time with you and I find her very thorough.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Dec 21, 2019
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Dr. Leon is my new ob/gyn doctor and I am thrilled to have her. She immediately gave me a feeling of ease from my changing to a new doctor. She is extremely professional and was painless with my ambulatory surgery procedure! Love her....she is a keeper!
What went well
No results
What could be improved
No results
Helpful
Brooklyn, NY – Oct 18, 2017
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Professional, patient, caring, great bedside manner. I can be a pain sometimes and she's never made me feel silly for being a worried mama. I'd hands down recommend Dr. Leon.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Ronkonkoma, NY – Aug 09, 2017
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Dr Leon is a caring and competent doctor.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Kathy in stony brook ny – Jul 28, 2017
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My dr was not on call the night I went into labor early so I was assigned Dr Leon. SO rude to me on the phone. Acted annoyed she had to come in. Arrived 2 hours later at the hospital, still rude. Told me she would NEVER be doing my elected c section if it weren't under my drs orders (I have vasovegal anxiety attacks over natural childbirth& cannot help it) I began to have an anxiety attack and I was in tears. 4 hours of labor no check up or drugs. No checkup after delivery and botched mystitches
What went well
No results
What could be improved
  • Office environment
  • Difficult to schedule appointment
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Staff wasn't friendly
  • Appointment was rushed
  • Didn't trust the provider's decisions
8 others found this helpful
Helpful
Smithtown, NY – Mar 30, 2017
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About Me

biography

Dr. Diana Leon, MD is an obstetrician gynecologist in East Setauket, NY. She is affiliated with medical facilities such as Mather Hospital and Stony Brook University Hospital. She is accepting new patients and telehealth appointments.
  • Obstetrics & Gynecology

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

American Board of Medical Specialties®
American Board of Obstetrics & Gynecology®
Obstetrics & Gynecology
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Dr. Leon is a Healthgrades Choice provider in Obstetrics & Gynecology

    Read our methodology

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    Locations

    Practice

    Office100 S Jersey Ave Unit 16 East Setauket, NY 11733
    1

    Practice

    Suffolk Chest Physicians LLP285 Sills Rd Bldg 7 East Patchogue, NY 11772
    2

    Practice

    Stony Brook University Hospital101 Nicolls Rd Stony Brook, NY 11794
    3
    Office900 Merchants Concourse Ste 216 Westbury, NY 11590
    4

    Affiliated Hospitals

    • Mather Hospital

      75 N Country Rd
      Port Jefferson, NY 11777
      Recipient of 22
      hospital awards

      America's 250 Best Hospitals Award™ (2025, 2024, 2023)

      Top in the nation for overall patient experience based on nine measures related to doctor and nurse communication, hospital cleanliness and noise levels, and medication and post-discharge care instructions

      Outstanding Patient Experience Award™ (2024, 2023, 2022)

      Top in the nation for overall patient experience based on nine measures related to doctor and nurse communication, hospital cleanliness and noise levels, and medication and post-discharge care instructions

      View all awards

      How patients felt about the care they received at this hospital.

      90%
      Patients said they were given information about recovering at home

      6% higher than the national average

      85%
      Patients said that nurses always listened to them and explained things well

      10% higher than the national average

      View all patient feedback
    • Stony Brook University Hospital

      101 Nicolls Rd
      Stony Brook, NY 11794
      Recipient of 33
      hospital awards

      America's 100 Best Hospitals Award™ (2025, 2024, 2023)

      Top 5% in the nation for consistently delivering clinical quality

      America's 250 Best Hospitals Award™ (2025, 2024, 2023)

      Top 5% in the nation for consistently delivering clinical quality

      View all awards

      How patients felt about the care they received at this hospital.

      86%
      Patients said they were given information about recovering at home

      2% higher than the national average

      74%
      Patients said that doctors always listened to them and explained things well

      2% lower than the national average

      View all patient feedback
    • Long Island Community Hospital

      101 Hospital Rd
      Patchogue, NY 11772
      Recipient of 1
      hospital award

      Patient Safety Excellence Award™ (2025)

      Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

      View all awards

      How patients felt about the care they received at this hospital.

      74%
      Patients said they were given information about recovering at home

      10% lower than the national average

      64%
      Patients said that doctors always listened to them and explained things well

      12% lower than the national average

      View all patient feedback
    Learn more about how Healthgrades measures Hospital Quality