Gregory S Granzeier, DO
Obstetrician/Gynecologist - General
Highlights
- Board Certified
Biography
I want my patients to understand what is happening with their bodies and to understand the different treatments available to them. With this information, they can become active, educated participants … Read more ›
Featured Review See More Reviews
The dr was very tentative to the pain level I was in, thorough instruction on how to care at home and signs to look for. I am also well taken care of when I see this physician in the hospital or clinic…
Summary
Provider Training
| University | Degree | Focus | Graduated |
|---|---|---|---|
| New York Institute of Technology College of Osteopathic Medicine | Medical Degree | Not Specified | |
| Ok State University, College of Osteo Med, Tulsa, Ok | Other Degree | 1991 | |
| New York College Of Osteopathic Medicine | Other Degree | 1991 | |
| New York College Of Osteopathic Medicine | Medical Degree | 1991 | |
| Oklahoma State University Center for Health Sciences College of Osteopathic Medicine | Medical Degree | 1991 |
| Institution | Focus | Year |
|---|---|---|
| Residency - Lutheran Medical Center Program | Not Specified | |
| Residency - Lutheran Medical Center, Obstetrics And Gynecology | Not Specified |
| Certification | Cert. Body | Year |
|---|---|---|
| Obstetrics and Gynecology | Obstetrics and Gynecology | Not Specified |
Photos
Specialties
Languages Spoken
EnglishMedical Specialties
- Obstetrician/Gynecologist
Obstetrics & Gynecology
Years In Practice: 28 (started in 1998)
Accepts New Patients: Yes
Payment Options
Payment DetailsReviews
Number of Reviews: 3
Most Recent Review: 06/01/2026
Office & Staff Evaluation Not rated
Provider Evaluation
Review by
Anonymous
on
June 01, 2026
-
Mercyhealth Roscoe - 5000 Prairie Rose Dr.
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
-
Clear explanations
- Trust in Decision Making Not rated
- Accuracy of Diagnosis Not rated
- Post-Visit Follow-Up Not rated
“The dr was very tentative to the...”
The dr was very tentative to the pain level I was in, thorough instruction on how to care at home and signs to look for. I am also well taken care of when I see this physician in the hospital or clinic
Review by
Anonymous
on
October 23, 2025
-
Mercyhealth Roscoe - 5000 Prairie Rose Dr.
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
-
Clear explanations
- Trust in Decision Making Not rated
- Accuracy of Diagnosis Not rated
- Post-Visit Follow-Up Not rated
“Been my doctor forever. He is ef...”
Been my doctor forever. He is efficient and I feel comfortable with him
Review by
Anonymous
on
November 21, 2025
-
Mercyhealth Roscoe - 5000 Prairie Rose Dr.
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
-
Clear explanations
- Trust in Decision Making Not rated
- Accuracy of Diagnosis Not rated
- Post-Visit Follow-Up Not rated
“Dr Granzier is caring, smart, he...”
Dr Granzier is caring, smart, helpful and compassionate.
Locations
Affiliated Practices
Mercyhealth Roscoe
5000 Prairie Rose Dr.Roscoe, IL 61073
Practice Colleagues
Elizabeth Burke, APN, CNM - Certified Nurse Midwife
Shahid Mohammad, DO - Family Medicine Physician
Timothy Carroll, MD - Family Medicine Physician
Rana Khalek, MD, FACOG - Obstetrician/Gynecologist
Sandra Lee, APRN, CNP - Nurse Practitioner
David Hansen, MD - Family Medicine Physician
John Perryman, MD - Pediatrician
Jane Taylor, MD, FAAP - Pediatrician
Joshua Malinis, DO - Family Medicine Physician
Procedures & Services
Procedures & Treatments Offered
Commonly Prescribed Medications
Gregory S Granzeier, DO has not yet listed the medications that he commonly prescribes.
Accepted Insurance
Accepted Insurance
Gregory S Granzeier, DO has not yet specified the insurance plans he accepts.
Comment - “ The dr was very tentative to the... ”
The dr was very tentative to the pain level I was in, thorough instruction on how to care at home and signs to look for. I am also well taken care of when I see this physician in the hospital or clinic