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

Dr. Stuart Jay Leff, DO

Individual provider Internal Medicine Physician · NPI 1124000476

Dr. Stuart Jay Leff, DO is an Internal Medicine Physician in Roselle Park, New Jersey. Licensed in New Jersey. Registered with an NPI since 2005.

Licensed in
NJ
In the registry since
2005
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

318 Chestnut St
Roselle Park, NJ 07204-1904
Phone: (908) 241-4200
Fax: (908) 241-8112
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MB39974 (NJ)

Record details

NPI number1124000476
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedNovember 14, 2005
Last updated in NPPESApril 2, 2015
Mailing addressPo Box 416457, Boston, MA 02241-6457

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