4.7
21 Ratings with 2 written Reviews
Summary
Dr. Mark Dreyer specializes in gastroenterology and internal medicine, focusing on digestive health and comprehensive internal medicine care. They completed their residency training at Northwestern Memorial Hospital, gaining expertise in both specialized gastrointestinal conditions and broader internal medicine practice.
Dr. Dreyer practices at Gi Associates in Waukesha, Wisconsin, and maintains hospital privileges at Prohealth Oconomowoc Memorial Hospital. They treat patients with gastrointestinal bleeding and iron deficiency anemia. Their procedural expertise includes performing colonoscopies and lower gastrointestinal endoscopy procedures. Patients rate Dr. Dreyer an average of 4.7 out of 5 stars.
Dr. Dreyer practices at Gi Associates in Waukesha, Wisconsin, and maintains hospital privileges at Prohealth Oconomowoc Memorial Hospital. They treat patients with gastrointestinal bleeding and iron deficiency anemia. Their procedural expertise includes performing colonoscopies and lower gastrointestinal endoscopy procedures. Patients rate Dr. Dreyer an average of 4.7 out of 5 stars.
Overview based on verified provider data
Quick Facts
- 2 insurance plans accepted
- Northwestern Memorial Hospital
- 2 written reviews
- 2 specialties
- 11 areas of expertise
- 1 hospital affiliation
- 1 office location
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. Mark W Dreyer, MD | Dr. David Duane Schlomer, MD | Dr. Mark A Beilke, MD | Dr. Brett Adam Linzer, MD |
| Gastroenterology | Internal Medicine | Internal Medicine | Internal Medicine |
| Accepts New Patients | |||
| 30 Years of Experience | 30 Years of Experience | ||
| No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English | Speaks English, Spanish | Speaks English, Spanish | |
| Waukesha , WI | Oconomowoc , WI | Milwaukee , WI | Oconomowoc , WI |
| Med School: Medical College Of Wisconsin | Med School: Loyola University Of Chicago Stritch School Of Medicine | ||
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Mark W Dreyer
Medical Specialties
Dr. Mark W Dreyer has the following 2 specialties
Specialty Expertise
Dr. Mark W Dreyer has the following 11 areas of expertise
Certifications, License, & Education
Education & Training
Residency
Completed their residency at Northwestern Memorial Hospital.
NPI Number
Dr. Dreyer's NPI number is 1396714861.
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Frequently Asked Questions
- Is Dr. Mark Dreyer accepting new patients?
- Dr. Mark Dreyer has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
- Does Dr. Mark Dreyer accept my insurance?
- You can see the insurance plans that Dr. Mark Dreyer accepts on their Vitals profile.
- How can I make an appointment with Dr. Mark Dreyer?
- You can find contact information for Dr. Mark Dreyer here on Vitals.
- Which hospitals is Dr. Mark Dreyer affiliated with?
- Dr. Mark Dreyer is affiliated with Prohealth Oconomowoc Memorial Hospital.
- Does Dr. Mark Dreyer accept virtual/telehealth appointments?
- Dr. Mark Dreyer has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
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