Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Jeffrey D Blonstein, MD

Individual provider Diagnostic Radiology Physician · NPI 1497864458

Jeffrey D Blonstein, MD practises Diagnostic Radiology in Millburn, New Jersey. Graduated from Albany Medical College of Union University in 1978, 48 years ago. Practices with Denville Diagnostics Imaging and Open MRI LLC, a 40-clinician group and accepts Medicare assignment. Licensed in New Jersey.

Years since qualifying
48
Trained at
Albany Medical College of Union University
Licensed in
NJ
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

120 Millburn Ave Ste 101
Millburn, NJ 07041 Not confirmed with CMS for 12 years — call before visiting
Phone: (973) 376-0900
Fax: (973) 376-0010
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 25MA04044900 (NJ)

Record details

NPI number1497864458
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 30, 2006
Last updated in NPPESJanuary 23, 2014

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolALBANY MEDICAL COLLEGE OF UNION UNIVERSITY
Graduated 1978 (48 years in practice)
Group practice Denville Diagnostics Imaging And Open Mri Llc — 40 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations12 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients2,090
Services billed 3,450 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Denville Diagnostics Imaging and Open MRI LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 40 clinicians in the practice; 12 are shown here.

Other providers in Millburn