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

Dr. Mark William Knakal, DDS

Individual provider Periodontics · NPI 1689895054

Dr. Mark William Knakal, DDS is a Periodontics in East Setauket, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2007
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.

See every abbreviation used in this directory →

Practice location Address checks out

3400 Nesconset Hwy Ste 109
East Setauket, NY 11733-3327
Phone: (631) 751-6700
Fax: (631) 751-1124
Show map & directions

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

Specialties & licences

Periodontics (primary) Taxonomy 1223P0300X · Licence 050160-1 (NY)

Record details

NPI number1689895054
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorYes
NPI enumeratedMay 1, 2007
Last updated in NPPESJuly 8, 2007
Mailing address2 Moss Creek Ln, East Patchogue, NY 11772-6160

Other providers in East Setauket