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

Jason Lewis, MD

Individual provider Psychiatry Physician · NPI 1558780189

Jason Lewis, MD is a Psychiatry in Port Jefferson, New York. Graduated from Icahn School of Medicine at Mount Sinai in 2014, 12 years ago. Practices with John T Mather Memorial Hospital, a 180-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in New York.

Years since qualifying
12
Trained at
Icahn School of Medicine at Mount Sinai
Licensed in
NY
In the registry since
2014
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

75 N Country Rd
Port Jefferson, NY 11777-2190
Phone: (631) 473-1320
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (2)

  • 1111 Amsterdam Ave, New York, NY 10025-1716 — (212) 523-4000
  • 177 Fort Washington Ave, New York, NY 10032 — (212) 305-3090

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 293731-1 (NY)

Record details

NPI number1558780189
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 10, 2014
Last updated in NPPESJuly 10, 2026
Certification dateJuly 10, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPSYCHIATRY
Medical schoolICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
Graduated 2014 (12 years in practice)
Group practice John T Mather Memorial Hospital — 180 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Port Jefferson