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

Donna C Knowlton, DDS

Individual provider Dentist · NPI 1558396671

Donna C Knowlton, DDS is a Dentist in New York, New York. Practices as a sole proprietor. Licensed in North Carolina and New York.

Licensed in
NC, NY
In the registry since
2006
Specialties on file
3
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.

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Practice location Address checks out

345 E 24th St
New York, NY 10010-4020
Phone: (212) 998-9454
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

General Practice Dentistry (primary) Taxonomy 1223G0001X · Licence 051750 (NY)
Dentist Taxonomy 122300000X · Licence 8025 (NC)
General Practice Dentistry Taxonomy 1223G0001X · Licence 8025 (NC)

Record details

NPI number1558396671
Entity typeIndividual (Type 1)
GenderFemale
Credentials DDS
Sole proprietorYes
NPI enumeratedJuly 11, 2006
Last updated in NPPESMay 16, 2022
Certification dateMay 16, 2022

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