5
1 Rating
Summary
Dr. Dietmar Grentz treats type 2 diabetes mellitus and chronic kidney disease and has practiced family medicine and preventive medicine for 43 years. He is affiliated with University of Michigan Health Sparrow Carson Hospital and Corewell Health Lakeland Hospitals St Joseph Hospital and sees patients in Saint Joseph, Michigan. He earned his medical degree from Loma Linda University School of Medicine and speaks English and Spanish. Patients on Vitals rate Dr. Grentz 5 out of 5.
Overview based on verified provider data
Quick Facts
- 43 years of experience
- speaks English, Spanish
- Loma Linda University School Of Medicine
- 2 specialties
- 9 areas of expertise
- 2 hospital affiliations
- 1 office location
- Male
Patients’ Perspective
- Gave an accurate diagnosis
- Had a good bedside manner
- Spent time with me
Based on patient feedback. Read the reviews
Office Location
Compare with Similar Doctors
 |  |  |  |
| Dr. Dietmar Jorgen Grentz, MD | John A. Meyer, MSN, FNP-C | Nicole Baldwin, APRN, FNP-BC | Dr. Alaa Mansour, MD |
| Family Medicine | Family Medicine | Family Medicine | Family Medicine |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | |
| 43 Years of Experience | 6 Years of Experience | 8 Years of Experience | 34 Years of Experience |
| No Virtual Visit Option | Virtual Visit Available | Virtual Visit Available | Virtual Visit Available |
| Speaks English, Spanish | Speaks English | Speaks English | Speaks French, Arabic |
| Saint Joseph , MI | Houston , TX | Orlando , FL | Eastpointe , MI |
| Med School: Loma Linda University School Of Medicine | Med School: University Of Baghdad College Of Medicine | ||
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Dietmar Jorgen Grentz
Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.
Medical Specialties
Dr. Dietmar Jorgen Grentz has the following 2 specialties
Specialty Expertise
Dr. Dietmar Jorgen Grentz has the following 9 areas of expertise
Certifications, License, & Education
43 Years Experience
Dr. Dietmar Jorgen Grentz holds an expired medical license in the state of Michigan.
Medical License
Medical Doctor with an expired medical license in the state of Michigan that expired in 2025.
Education & Training
Medical School
Graduated from Loma Linda University School Of Medicine in 1983.
NPI Number
Dr. Grentz's NPI number is 1346269586.
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Frequently Asked Questions
- Where is Dr. Dietmar Grentz's office located?
- Dr. Dietmar Grentz's office is located at 1234 Napier Ave, Saint Joseph, MI, 49085.
- Does Dr. Dietmar Grentz accept virtual/telehealth appointments?
- Dr. Dietmar Grentz has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- How can I make an appointment with Dr. Dietmar Grentz?
- You can find contact information for Dr. Dietmar Grentz here on Vitals.
- Does Dr. Dietmar Grentz accept my insurance?
- You can see the insurance plans that Dr. Dietmar Grentz accepts on their Vitals profile.
- Which hospitals is Dr. Dietmar Grentz affiliated with?
- Dr. Dietmar Grentz is affiliated with University Of Michigan Health Sparrow Carson Hospital and Corewell Health Lakeland Hospitals St Joseph Hospital.
Data Sources
This provider profile is built using data from:
- NPPES NPI Registry
- State medical licensing boards
- Healthcare system and provider network data
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