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

Dr. William Michael Hassan, DDS

Individual provider General Practice Dentistry · NPI 1164551792

Dr. William Michael Hassan, DDS practises General Practice Dentistry in Mayfield, New York. Licensed in New York. Registered with an NPI since 2007.

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

2540 State Highway 30
Mayfield, NY 12117 Not confirmed with CMS for 19 years — call before visiting
Phone: (518) 661-6405
Fax: (518) 661-7765
Show map & directions

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

Specialties & licences

General Practice Dentistry (primary) Taxonomy 1223G0001X · Licence 0400541 (NY)

Record details

NPI number1164551792
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorNo
NPI enumeratedMarch 2, 2007
Last updated in NPPESJuly 8, 2007