0 reviews
Summary
Dr. Leonard Mermel is an internal medicine physician with specialized expertise in infectious disease, bringing 42 years of clinical experience to patient care. He earned his medical degree from Des Moines University College of Osteopathic Medicine and completed his residency at St. Louis University Hospital. His extensive background has positioned him as a leader in treating complex infectious conditions, and he communicates with patients in English.
Dr. Mermel practices throughout Providence, Rhode Island, with affiliations at Rhode Island Hospital, Women and Infants Hospital of Rhode Island, The Miriam Hospital, and Roger Williams Medical Center. He specializes in managing serious infectious conditions, including COVID-19 and other novel coronavirus infections. His clinical expertise includes performing COVID-19 testing to help diagnose and monitor patients during the pandemic.
Dr. Mermel practices throughout Providence, Rhode Island, with affiliations at Rhode Island Hospital, Women and Infants Hospital of Rhode Island, The Miriam Hospital, and Roger Williams Medical Center. He specializes in managing serious infectious conditions, including COVID-19 and other novel coronavirus infections. His clinical expertise includes performing COVID-19 testing to help diagnose and monitor patients during the pandemic.
AI-generated from data on this provider profile.
Quick Facts
- 42 years of experience
- 3 insurance plans accepted
- speaks English
- St Louis University Hospital
- 3 specialties
- 15 areas of expertise
- 3 board certifications
- 1 hospital affiliation
- 4 office locations
- Male
Office Locations
Dr. Leonard Mermel has 4 locationsCompare with Similar Doctors
![]() | |||
| Dr. Leonard Mermel, DO | Dr. Karen L. Garibaldi, MD | Dr. Austin Ritter, DO | Dr. Lunia Collado, MD |
| Internal Medicine | Internal Medicine | Internal Medicine | Internal Medicine |
| 42 Years of Experience | |||
| No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English | Speaks English | Speaks English | Speaks Spanish, English |
| Providence , RI | Providence , RI | Providence , RI | Providence , RI |
| Med School: Des Moines University College Of Osteopathic Medicine | Med School: University Of Connecticut School Medicine | ||
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Leonard Mermel
Medical Specialties
Dr. Leonard Mermel has the following 3 specialties
Specialty Expertise
Dr. Leonard Mermel has the following 15 areas of expertise
Certifications, License, & Education
42 Years Experience
MEDICAL LICENSE
Doctor Of Osteopathy, Rhode Island, 2026, Active
EDUCATION & TRAINING
Residency
St Louis University Hospital
Medical School
Des Moines University College Of Osteopathic MedicineGraduated in 1984
Similar doctors
Frequently Asked Questions
- Does Dr. Leonard Mermel accept my insurance?
- You can see the insurance plans that Dr. Leonard Mermel accepts on their Vitals profile.
- Is Dr. Leonard Mermel accepting new patients?
- Dr. Leonard Mermel has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
- Where is Dr. Leonard Mermel's office located?
- Dr. Leonard Mermel's office is located at 593 Eddy St, Providence, RI, 02903.
- Does Dr. Leonard Mermel accept virtual/telehealth appointments?
- Dr. Leonard Mermel has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Which hospitals is Dr. Leonard Mermel affiliated with?
- Dr. Leonard Mermel is affiliated with Rhode Island Hospital.
Ensuring Data Transparency and Trust: A Guide to Vitals Doctor Listings and Reviews
Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.
Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.
Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.


