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

Dr. Deena Eliana Merzel, MD

Individual provider Pediatric Gastroenterology Physician · NPI 1881191690

Dr. Deena Eliana Merzel, MD is a Pediatric Medicine in Syosset, New York. Graduated from New York Medical College in 2018, 8 years ago. Works from 3 locations. Licensed in New York.

Years since qualifying
8
Trained at
New York Medical College
Licensed in
NY
In the registry since
2018
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

575 Underhill Blvd Ste 200
Syosset, NY 11791-3416
Phone: (516) 822-4404
Show map & directions

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

Additional practice locations (2)

  • 111 E 210th St, Bronx, NY 10467-2401 — (718) 741-2332
  • 100 Woods Rd, Valhalla, NY 10595-1530 — (914) 493-7000

Specialties & licences

Pediatric Gastroenterology Physician (primary) Taxonomy 2080P0206X · Licence 308687 (NY)

Record details

NPI number1881191690
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 9, 2018
Last updated in NPPESJuly 22, 2025
Certification dateJuly 22, 2025

Medicare enrollment

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

Medicare specialtyPEDIATRIC MEDICINE
Medical schoolNEW YORK MEDICAL COLLEGE
Graduated 2018 (8 years in practice)
Accepts Medicare assignment Not indicated
Practice locations2 on file with Medicare