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

David M Duffy, OD

Individual provider Optometrist · NPI 1295778124

David M Duffy, OD is an Optometrist in Philadelphia, Pennsylvania. Practices as a sole proprietor. Licensed in Delaware and Pennsylvania.

Licensed in
DE, PA
In the registry since
2006
Specialties on file
2
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1103 Chestnut St
Philadelphia, PA 19107-3619
Phone: (484) 889-8985
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence OEG000992 (PA)
Optometrist Taxonomy 152W00000X · Licence I3-0001415 (DE)

Record details

NPI number1295778124
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorYes
NPI enumeratedJune 14, 2006
Last updated in NPPESSeptember 20, 2021
Certification dateSeptember 20, 2021

Other providers in Philadelphia