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

Aaron Westreich, MD

Individual provider Allergy & Immunology Physician · NPI 1801329735

Aaron Westreich, MD is an Allergy/Immunology in Valley Stream, New York. Graduated from University of Maryland School of Medicine in 2017, 9 years ago. Practices with ENT and Allergy Associates LLP, a 432-clinician group and accepts Medicare assignment. Licensed in Colorado and New York.

Years since qualifying
9
Trained at
University of Maryland School of Medicine
Licensed in
CO, NY
In the registry since
2017
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

70 E Sunrise Hwy Ste 411
Valley Stream, NY 11581-1233
Phone: (516) 355-0505
Fax: (516) 355-2055
Show map & directions

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

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X · Licence 315428 (NY)
Pediatrics Physician Taxonomy 208000000X · Licence DR.0063992 (CO)

Record details

NPI number1801329735
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 7, 2017
Last updated in NPPESJune 23, 2025
Certification dateJune 23, 2025
Mailing address660 White Plains Rd Ste 400, Tarrytown, NY 10591-5107

Medicare enrollment

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

Medicare specialtyALLERGY/IMMUNOLOGY
Medical schoolUNIVERSITY OF MARYLAND SCHOOL OF MEDICINE
Graduated 2017 (9 years in practice)
Group practice Ent And Allergy Associates Llp — 432 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Valley Stream