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

Dr. Jason Adam Klein, MD

Individual provider Pediatric Nephrology Physician · NPI 1033358676

Dr. Jason Adam Klein, MD is an Endocrinology in Commack, New York. Qualified in 2008, 18 years ago. Practices with New York University, a 5,884-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
18
Licensed in
NY
In the registry since
2009
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

500 Commack Rd
Commack, NY 11725-5020
Phone: (631) 444-5437
Fax: (631) 638-0157
Show map & directions

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

Specialties & licences

Pediatric Endocrinology Physician (primary) Taxonomy 2080P0205X · Licence 255029 (NY)
Pediatric Nephrology Physician Taxonomy 2080P0210X · Licence 255029 (NY)

Record details

NPI number1033358676
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 4, 2009
Last updated in NPPESMarch 25, 2026
Certification dateMarch 25, 2026

Medicare enrollment

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

Medicare specialtyENDOCRINOLOGY
Also practisesPEDIATRIC MEDICINE
Medical schoolOTHER
Graduated 2008 (18 years in practice)
Group practice New York University — 5884 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare