NICHOLAS GRUMBACH, M.D.
Concentra Urgent Care
Direct Primary Care
Proactive internal medicine care tailored to your needs
Credentials & Training
Federally verified- Credential
- MD
- Medical school
- Icahn School of Medicine at Mount Sinai
- Graduated
- 1996
- Medicare specialty
- Pediatric Medicine
- Also practices
- Internal Medicine
- Group practice
- Rhode Island Hospital · 428 clinicians
- Medicare assignment
- Accepted — bills the Medicare-approved amount as payment in full
Sourced from the CMS Doctors & Clinicians national file, last checked August 2026.
About
Dr. Nicholas Grumbach treats a wide range of internal medicine conditions, providing comprehensive care to adults in Warwick, Rhode Island. He focuses on preventing and managing chronic diseases, and stays up-to-date on the latest medical advancements to deliver the best possible care. As a primary care physician, Dr. Grumbach takes the time to listen to his patients, address their concerns, and develop personalized treatment plans.
The practice offers direct-pay services, allowing patients to secure high-quality care without insurance headaches. Appointments can be scheduled in-office or via virtual consultation.
Areas of Focus
Specialties
Patients Served
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