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Summary
Dr. Matthew Grunwald treats colon polyps, diverticular disease, and diverticulosis, and performs colonoscopy, lower GI endoscopy, and pathology tests. He practices gastroenterology and internal medicine in Portland, Maine, and is affiliated with Mainehealth Maine Medical Center, Maimonides Medical Center, University Hospital of Brooklyn, The Memorial Hospital, The Barbara Bush Children's Hospital, and Northern Light Mercy Hospital. Dr. Grunwald earned his medical degree from Renaissance School of Medicine at Stony Brook University and completed his residency at University Hospital of Brooklyn.
Overview based on verified provider data
Quick Facts
- accepting new patients
- 11 years of experience
- University Hospital Of Brooklyn
- 2 specialties
- 2 areas of expertise
- 6 hospital affiliations
- 4 office locations
- Male
Office Locations
Dr. Matthew Drew Grunwald has 4 locationsPortland Gastroenterology Center
161 Marginal WayPortland, ME 04101Mon8:30 am - 4:30 pm
Tue8:30 am - 4:30 pm
Wed8:30 am - 4:30 pm
Thu8:30 am - 4:30 pm
Fri8:30 am - 4:30 pm
SatClosed
SunClosed
Compare with Similar Doctors
 |  | |  |
| Dr. Matthew Drew Grunwald, MD | Theresa Obonyano, APRN | Dr. Frederick Richard Stack, MD | Dr. Jane Dasey Mcnally, DO |
| Gastroenterology | Gastroenterology | Hospital Medicine | Hospital Medicine |
| Accepts New Patients | Accepts New Patients | ||
| 11 Years of Experience | 35 Years of Experience | 31 Years of Experience | |
| No Virtual Visit Option | Virtual Visit Available | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English | Speaks English | Speaks English | |
| Portland , ME | Sacramento , CA | Biddeford , ME | Portland , ME |
| Med School: Renaissance School Of Medicine At Stony Brook University | Med School: The University of Texas Health Science Center at Houston | Med School: University Of Nebraska College Of Medicine | Med School: University Of New England College Of Osteopathic Medicine |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Matthew Drew Grunwald
Medical Specialties
Dr. Matthew Drew Grunwald has the following 2 specialties
Specialty Expertise
Dr. Matthew Drew Grunwald has the following 2 areas of expertise
Certifications, License, & Education
11 Years Experience
Dr. Matthew Drew Grunwald holds an expired medical license in the state of Maine.
Medical License
Medical Doctor with an expired medical license in the state of Maine that expired in 2025.
Education & Training
Residency
Completed their residency at University Hospital Of Brooklyn.
Medical School
Graduated from Renaissance School Of Medicine At Stony Brook University in 2015.
NPI Number
Dr. Grunwald's NPI number is 1689061954.
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Frequently Asked Questions
- How can I make an appointment with Dr. Matthew Grunwald?
- You can find contact information for Dr. Matthew Grunwald here on Vitals.
- Does Dr. Matthew Grunwald accept virtual/telehealth appointments?
- Dr. Matthew Grunwald has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Which hospitals is Dr. Matthew Grunwald affiliated with?
- Dr. Matthew Grunwald is affiliated with Mainehealth Maine Medical Center, Maimonides Medical Center, University Hospital Of Brooklyn, The Memorial Hospital, The Barbara Bush Childrens Hospital, and Northern Light Mercy Hospital.
- Does Dr. Matthew Grunwald accept my insurance?
- You can see the insurance plans that Dr. Matthew Grunwald accepts on their Vitals profile.
- Where is Dr. Matthew Grunwald's office located?
- Dr. Matthew Grunwald's office is located at 161 Marginal Way, Portland, ME, 04101.
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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