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.

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 locations

Rhode Island Hospital

593 Eddy StProvidence, RI 02903

The Miriam Hospital

164 Summit AveProvidence, RI 02906

Roger Williams Medical Center

825 Chalkstone AveProvidence, RI 02908

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Dr. Leonard Mermel, DODr. Karen L. Garibaldi, MDDr. Austin Ritter, DODr. Lunia Collado, MD
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
4.8 
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 , RIProvidence , RIProvidence , RIProvidence , RI
Med School: Des Moines University College Of Osteopathic Medicine Med School: University Of Connecticut School Medicine
Current Profile
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Insurance Plans Accepted by Dr. Leonard Mermel

  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicare

Medical Specialties

Dr. Leonard Mermel has the following 3 specialties

Specialty Expertise

Dr. Leonard Mermel has the following 15 areas of expertise

  • AIDS/HIV (Acquired Immunodeficiency Syndrome)
  • Bacteremia
  • Fever
  • Fungemia
  • Hepatitis C
  • HIV Infections
  • Human Immunodeficiency Virus (HIV/AIDS)
  • Immunization
  • Infection
  • Infectious Disease
  • Lyme Disease
  • Other
  • Pneumonia
  • Tuberculosis
  • Vaccination

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

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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.

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