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

Dr. Leonard Bielory, MD

Individual provider Clinical & Laboratory Immunology (Allergy & Immunology) Physician · NPI 1154352987

Dr. Leonard Bielory, MD is an Allergy/Immunology in Springfield, New Jersey. Graduated from Rowan University School of Osteopathic Medicine in 1980, 46 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in New Jersey.

Years since qualifying
46
Trained at
Rowan University School of Osteopathic Medicine
Licensed in
NJ
In the registry since
2006
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

400 Mountain Ave
Springfield, NJ 07081-2515
Phone: (973) 912-9817
Fax: (206) 333-1884
Show map & directions

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

Specialties & licences

Clinical & Laboratory Immunology (Allergy & Immunology) Physician (primary) Taxonomy 207KI0005X · Licence 25MA04594700 (NJ)

Record details

NPI number1154352987
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 6, 2006
Last updated in NPPESMay 20, 2011

Medicare enrollment

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

Medicare specialtyALLERGY/IMMUNOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolROWAN UNIVERSITY SCHOOL OF OSTEOPATHIC MEDICINE
Graduated 1980 (46 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount