HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / NY

JOHN GRASSI, PA

PHYSICIAN ASSISTANT

Graduated: 1998

NPI: 1457471450

Practice Locations (2)

OPTUM URGENT CARE PLLC

339 MAIN ST

HUNTINGTON, NY 117436958

6314709000

OPTUM URGENT CARE PLLC

555 N BROADWAY

JERICHO, NY 117532134

5165975070

Source: CMS National Downloadable File, September 2026.