Dr. Leonard Anthony Mannarelli , DO
Internal Medicine • Providence, RI
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Professional Overview & Biography Verified Profile Summary
Dr. Leonard Mannarelli, DO is a registered healthcare professional specializing in Internal Medicine in Providence, RI. Official NPI practice address is registered at 50 MAUDE ST.
Practice Location & Contact Primary Location
50 Maude St
Providence, RI 029084325
Specialty Benchmarks & Practice Insights
Comparative analytics for Internal Medicine in Providence, RI
Practicing in Providence, RI (1079 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Medical Specialties & State Licenses
CMS Verified: 2026-01-05NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Secondary Practice Locations
725 Reservoir Ave Ste 6a
Cranston, RI 029104450
Phone: 4019422320
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Registered at 50 MAUDE ST, PROVIDENCE, RI 029084325 (Tel: 4014562145)
NPI status registered as active in NPPES database
Registered at 35 VILLAGE PLAZA, NORTH SCITUATE, RI 028571849 (Tel: 4016476262)
Registered at PO BOX 312, PASCOAG, RI 028590312 (Tel: 4015670800)
Recorded as LEONARD MANNARELLI, D.O.
Internal Medicine (License #DO452 in RI)
NPI status registered as active in NPPES database
Registered at 135 ATWOOD AVE, CRANSTON, RI 029204131 (Tel: 4019441748)
Registered at 135 ATWOOD AVE, CRANSTON, RI 029204131 (Tel: 4019441748)
Recorded as LEONARD MANNARELLI, D.O.
Internal Medicine (License #DO452 in RI)
First registered as active Individual Practitioner in NPPES Database.
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NPI Administrative Meta
Mailing Address
Po Box 312
Pascoag, RI 028590312
Phone: 4015670800
This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.