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

Iwona Dziewa, DO

Individual provider Allergy & Immunology Physician · NPI 1083091789

Iwona Dziewa, DO is an Allergy/Immunology in Jefferson Valley, New York. Qualified in 2015, 11 years ago. Practices with Optum Medical Care PC, a 1,018-clinician group and accepts Medicare assignment. Licensed in New York and Pennsylvania.

Years since qualifying
11
Licensed in
NY, PA
In the registry since
2015
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

3680 Hill Blvd
Jefferson Valley, NY 10535-1500
Phone: (914) 245-7700
Fax: (914) 248-2081
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 309855 (NY)
Allergy & Immunology Physician Taxonomy 207K00000X · Licence OS021208 (PA)

Record details

NPI number1083091789
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 1, 2015
Last updated in NPPESJune 28, 2023
Certification dateJune 28, 2023

Medicare enrollment

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

Medicare specialtyALLERGY/IMMUNOLOGY
Also practisesPEDIATRIC MEDICINE
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Optum Medical Care Pc — 1018 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount