John R Roost, DO
Obstetrician/Gynecologist - General
Biography
John R Roost, DO is a Obstetrician/Gynecologist - General practicing in Defiance, OH
He has not yet shared a personalized biography with Doctor.com.
Featured Review See More Reviews
Honestly this is my first experience with a male OBGYN and now I can see why everyone loves Dr. Roost. He was running behind from a busy day but never once made us feel rushed or like my questions were a burden when it was my turn for my appointment. He made me feel very comfortable within moments with how personable he is …
Summary
Photos
Specialties
Languages Spoken
EnglishMedical Specialties
- Obstetrician/Gynecologist
Accepts New Patients: Yes
Payment Options
Payment DetailsReviews
Number of Reviews: 6
Most Recent Review: 12/18/2025
Office & Staff Evaluation Not rated
Review by
Anonymous
on
December 18, 2025
-
Mercy Health - Defiance Obstetrics and Gynecology - 1400 E. Second St.
Office & Staff Evaluation
Practice Evaluation
- Ease of Getting an Appointment Not rated
- Courtesy of Practice Staff Not rated
- Appearance & Atmosphere of Office Not rated
- Handling of Billing & Insurance Not rated
- Average Wait Time Not rated
Provider Evaluation
- Willingness to Spend Time with You Not rated
- Listening Skills Not rated
- Clear explanations Not rated
- Trust in Decision Making Not rated
- Accuracy of Diagnosis Not rated
- Post-Visit Follow-Up Not rated
“Honestly this is my first experi...”
Honestly this is my first experience with a male OBGYN and now I can see why everyone loves Dr. Roost. He was running behind from a busy day but never once made us feel rushed or like my questions were a burden when it was my turn for my appointment. He made me feel very comfortable within moments with how personable he is and I never once felt judged. I have already recommended him to a close friend who is hoping to have a baby soon.
Review by
Anonymous
on
September 26, 2025
-
Mercy Health - Defiance Obstetrics and Gynecology - 1400 E. Second St.
Office & Staff Evaluation
Practice Evaluation
- Ease of Getting an Appointment Not rated
- Courtesy of Practice Staff Not rated
- Appearance & Atmosphere of Office Not rated
- Handling of Billing & Insurance Not rated
- Average Wait Time Not rated
Provider Evaluation
- Willingness to Spend Time with You Not rated
- Listening Skills Not rated
- Clear explanations Not rated
- Trust in Decision Making Not rated
- Accuracy of Diagnosis Not rated
- Post-Visit Follow-Up Not rated
“Dr. Roost is excellent physician...”
Dr. Roost is excellent physician. He listens and is very attentative. Mercy is fortunate to have him!
Review by
Anonymous
on
July 01, 2025
-
Mercy Health - Defiance Obstetrics and Gynecology - 1400 E. Second St.
Office & Staff Evaluation
Practice Evaluation
- Ease of Getting an Appointment Not rated
- Courtesy of Practice Staff Not rated
- Appearance & Atmosphere of Office Not rated
- Handling of Billing & Insurance Not rated
- Average Wait Time Not rated
Provider Evaluation
- Willingness to Spend Time with You Not rated
- Listening Skills Not rated
- Clear explanations Not rated
- Trust in Decision Making Not rated
- Accuracy of Diagnosis Not rated
- Post-Visit Follow-Up Not rated
“Very thorough in describing proc...”
Very thorough in describing procedure needed. Risks, benefits, addressed concerns
Review by
Anonymous
on
October 13, 2025
-
Mercy Health - Defiance Obstetrics and Gynecology - 1400 E. Second St.
Office & Staff Evaluation
Practice Evaluation
- Ease of Getting an Appointment Not rated
- Courtesy of Practice Staff Not rated
- Appearance & Atmosphere of Office Not rated
- Handling of Billing & Insurance Not rated
- Average Wait Time Not rated
Provider Evaluation
- Willingness to Spend Time with You Not rated
- Listening Skills Not rated
- Clear explanations Not rated
- Trust in Decision Making Not rated
- Accuracy of Diagnosis Not rated
- Post-Visit Follow-Up Not rated
“I have recommended Dr. Roost man...”
I have recommended Dr. Roost many times. He's one of the very best!
Review by
Anonymous
on
September 24, 2025
-
Mercy Health - Defiance Obstetrics and Gynecology - 1400 E. Second St.
Office & Staff Evaluation
Practice Evaluation
- Ease of Getting an Appointment Not rated
- Courtesy of Practice Staff Not rated
- Appearance & Atmosphere of Office Not rated
- Handling of Billing & Insurance Not rated
- Average Wait Time Not rated
Provider Evaluation
- Willingness to Spend Time with You Not rated
- Listening Skills Not rated
- Clear explanations Not rated
- Trust in Decision Making Not rated
- Accuracy of Diagnosis Not rated
- Post-Visit Follow-Up Not rated
“It was my first time meeting Dr....”
It was my first time meeting Dr. Roost, but I thought he was helpful and made me feel at ease.
Review by
Anonymous
on
June 20, 2025
-
Mercy Health - Defiance Obstetrics and Gynecology - 1400 E. Second St.
Office & Staff Evaluation
Practice Evaluation
- Ease of Getting an Appointment Not rated
- Courtesy of Practice Staff Not rated
- Appearance & Atmosphere of Office Not rated
- Handling of Billing & Insurance Not rated
- Average Wait Time Not rated
Provider Evaluation
- Willingness to Spend Time with You Not rated
- Listening Skills Not rated
- Clear explanations Not rated
- Trust in Decision Making Not rated
- Accuracy of Diagnosis Not rated
- Post-Visit Follow-Up Not rated
“Very positive experience!...”
Very positive experience!
Locations
Affiliated Practices
Mercy Health - Defiance Obstetrics and Gynecology
1400 E. Second St.Defiance, OH 43512
Mercy Health — Perrysburg Obstetrics and Gynecology
1103 Village Square Suite 101Perrysburg, OH 43551
Practice Colleagues
Mitchell Greenbaum, DO - Obstetrician/Gynecologist
Donna Augustine, APRN-CNM - Certified Nurse Midwife
Marie Greenbaum, DO - Obstetrician/Gynecologist
Procedures & Services
Procedures & Treatments Offered
Commonly Prescribed Medications
John R Roost, DO has not yet listed the medications that he commonly prescribes.
Accepted Insurance
Accepted Insurance
John R Roost, DO has not yet specified the insurance plans he accepts.
Comment - “ Honestly this is my first experi... ”
Honestly this is my first experience with a male OBGYN and now I can see why everyone loves Dr. Roost. He was running behind from a busy day but never once made us feel rushed or like my questions were a burden when it was my turn for my appointment. He made me feel very comfortable within moments with how personable he is and I never once felt judged. I have already recommended him to a close friend who is hoping to have a baby soon.