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

Dr. Leslie Richard Pyenson, MD

Individual provider Internal Medicine Physician · NPI 1598786782

Dr. Leslie Richard Pyenson, MD is an Internal Medicine Physician in Bethesda, Maryland. Practices as a sole proprietor. Licensed in District of Columbia, Maryland and Virginia.

Licensed in
DC, MD, VA
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

9220 Beech Hill Dr
Bethesda, MD 20817-1945
Phone: (301) 365-5710
Fax: (301) 365-0941
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 D0026677 (MD)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD15621 (DC)
Internal Medicine Physician Taxonomy 207R00000X · Licence 0101030624 (VA)

Record details

NPI number1598786782
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 22, 2006
Last updated in NPPESJuly 8, 2007

Other providers in Bethesda