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

Individual provider Rheumatology Physician · NPI 1639374820

Richard Louis Leff, MD is a Rheumatology Physician in Chadds Ford, Pennsylvania. Practices as a sole proprietor. Licensed in Pennsylvania.

Licensed in
PA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

230 Fairville Rd
Chadds Ford, PA 19317-9469
Phone: (610) 388-7623
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence MD072738L (PA)

Record details

NPI number1639374820
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 18, 2007
Last updated in NPPESJuly 8, 2007