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

Frederick John Grassin, DDS

Individual provider Endodontics · NPI 1831311802

Frederick John Grassin, DDS is an Endodontics in New Port Richey, Florida. Licensed in Florida. Registered with an NPI since 2007.

Licensed in
FL
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

5347 Main St Ste 301
New Port Richey, FL 34652
Phone: (727) 841-9800
Fax: (727) 848-4768
Show map & directions

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

Specialties & licences

Endodontics (primary) Taxonomy 1223E0200X · Licence DN14860 (FL)

Record details

NPI number1831311802
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorNo
NPI enumeratedMay 2, 2007
Last updated in NPPESJuly 8, 2007
Mailing address5347 Main Street, Suite 301, New Port Richey, FL 34652

Other providers in New Port Richey