Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Leonard A Mermel, DO

Individual provider Infectious Disease Physician · NPI 1225078421

Leonard A Mermel, DO is an Infectious Disease Physician in Providence, Rhode Island. Licensed in Rhode Island. Registered with an NPI since 2006.

Licensed in
RI
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

110 Lockwood St Ste 116
Providence, RI 02903-4801
Phone: (401) 793-2985
Fax: (401) 793-4351
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence DO00410 (RI)

Record details

NPI number1225078421
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 7, 2006
Last updated in NPPESJune 7, 2013
Mailing address17 Virginia Ave, Suite 107, Providence, RI 02905-4406

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