4.2
32 Ratings with 12 written Reviews
Summary
Dr. Gregory Granzeier is an obstetrician and gynecologist who earned his Doctor of Osteopathy degree from Oklahoma State University Center for Health Sciences College of Osteopathic Medicine. He completed his residency training at Lutheran Medical Center and brings 35 years of experience to women's healthcare. Dr. Granzeier is fluent in English.
Dr. Granzeier practices at Mercyhealth in Roscoe, Illinois, where he focuses on comprehensive women's health services. His expertise includes managing high-risk pregnancies and treating abnormal uterine bleeding. He performs essential procedures such as Pap tests, fetal ultrasounds, and general blood work to monitor and maintain his patients' health. Patients have given him an average rating of 4.2 out of 5 stars.
Dr. Granzeier practices at Mercyhealth in Roscoe, Illinois, where he focuses on comprehensive women's health services. His expertise includes managing high-risk pregnancies and treating abnormal uterine bleeding. He performs essential procedures such as Pap tests, fetal ultrasounds, and general blood work to monitor and maintain his patients' health. Patients have given him an average rating of 4.2 out of 5 stars.
Overview based on verified provider data
Quick Facts
- accepting new patients
- 35 years of experience
- 18 insurance plans accepted
- speaks English
- Lutheran Medical Center
- 12 written reviews
- 1 specialty
- 11 areas of expertise
- 2 office locations
- Male
Patients’ Perspective
- Gave an accurate diagnosis
- Had a good bedside manner
- Spent time with me
Based on patient feedback. Read the reviews
Office Locations
Dr. Gregory Sean Granzeier has 2 locationsMercyhealth Roscoe
5000 Prairie Rose DrRoscoe, IL 61073 Tel: (815) 971-2000
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
Sat8:00 am - 12:00 pm
SunClosed
Compare with Similar Doctors
 |  |  |  |
| Dr. Gregory Sean Granzeier, DO | Dr. Lyndon Douglas Taylor, MD | Brian Stafeil, MD | Joy P Thompson, APRN |
| Obstetrics & Gynecology | Obstetrics & Gynecology | Maternal & Fetal Medicine | Obstetrics & Gynecology |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | Accepts New Patients |
| 35 Years of Experience | 48 Years of Experience | 23 Years of Experience | |
| No Virtual Visit Option | Virtual Visit Available | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English | Speaks English, Spanish, Russian | Speaks English | |
| Roscoe , IL | Oak Park , IL | Madison , WI | Janesville , WI |
| Med School: Oklahoma State Univ Center For Health Sciences College Of Osteopathic Med | Med School: Universidad Autonoma De Guadalajara Facultad De Medicina | Med School: Medical College Of Wisconsin | |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Gregory Sean Granzeier
Medical Specialties
Dr. Gregory Sean Granzeier has the following specialty
Specialty Expertise
Dr. Gregory Sean Granzeier has the following 11 areas of expertise
Certifications, License, & Education
35 Years Experience
Dr. Gregory Sean Granzeier holds an expired medical license in the state of Illinois.
Medical License
Doctor Of Osteopathy with an expired medical license in the state of Illinois that expired in 2026.
Education & Training
Residency
Completed their residency at Lutheran Medical Center.
Medical School
Graduated from Oklahoma State Univ Center For Health Sciences College Of Osteopathic Med in 1991.
NPI Number
Dr. Granzeier's NPI number is 1134239320.
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Frequently Asked Questions
- Where is Dr. Gregory Granzeier's office located?
- Dr. Gregory Granzeier's office is located at 5000 Prairie Rose Dr, Roscoe, IL, 61073.
- Does Dr. Gregory Granzeier accept my insurance?
- You can see the insurance plans that Dr. Gregory Granzeier accepts on their Vitals profile.
- What languages does Dr. Gregory Granzeier speak?
- Dr. Gregory Granzeier speaks English.
- Is Dr. Gregory Granzeier accepting new patients?
- Dr. Gregory Granzeier is accepting new patients on Vitals. View Dr. Gregory Granzeier's profile on Vitals to make an appointment.
- How can I make an appointment with Dr. Gregory Granzeier?
- You can find contact information for Dr. Gregory Granzeier here on Vitals.
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