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
Mailing address179 Jayne Ave, Patchogue, NY 11772-2836