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

Alfred J. Cossari, MD, PC

Organization Ophthalmology Physician · NPI 1417250135

Alfred J. Cossari, MD, PC is an Ophthalmology Physician in Port Jefferson, New York. Licensed in New York. Registered with an NPI since 2010.

Licensed in
NY
In the registry since
2010
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

311 Barnum Ave
Port Jefferson, NY 11777-1682
Phone: (631) 928-6400
Fax: (631) 928-2353
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence 119075 (NY)

Record details

NPI number1417250135
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Alfred Cossari — President · (631) 928-6400
NPI enumeratedDecember 20, 2010
Last updated in NPPESDecember 20, 2010
Mailing address31 Barnum Avenue, Port Jefferson, NY 11777

Other providers in Port Jefferson