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

Dr. William John Closson, PHD

Individual provider Clinical Laboratory Director (Non-physician) · NPI 1588001317

Dr. William John Closson, PHD is a Clinical Laboratory Director (Non-physician) in Patchogue, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2013
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

179 Jayne Ave
Patchogue, NY 11772-2836
Phone: (516) 527-2153
Fax: (631) 337-4094
Show map & directions

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

Specialties & licences

Clinical Laboratory Director (Non-physician) (primary) Taxonomy 247ZC0005X · Licence CLOSW1 (NY)

Record details

NPI number1588001317
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedJune 3, 2013
Last updated in NPPESJune 3, 2013