Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jeffrey D Blonstein, MD

Diagnostic Radiology Physician in Millburn, NJ · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1497864458

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Registry record

Entity type Individual (Type 1)

Name Jeffrey D Blonstein

Credential MD

Sex Male

Practice address 120 Millburn Ave, Suite 101, Millburn, NJ, 07041

Phone (973) 376-0900

Fax (973) 376-0010

Enumeration date Aug 30, 2006

Last updated in NPPES Jan 23, 2014

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 25MA04044900 (NJ) Primary

MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
P00842996	Other	NJ	RR MEDICARE
0084954000	Other	—	AMERIHEALTH
0522406	Medicaid	NJ	—
01000034100	Other	—	AMERICHOICE

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty.

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Frequently asked questions

What specialty is Jeffrey Blonstein?

Jeffrey Blonstein is registered in NPPES with the primary taxonomy of Diagnostic Radiology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Anita Jongco Internal Medicine Physician · Millburn, NJ NPI 1790778603 Trina Frankel Internal Medicine Physician · Millburn, NJ NPI 1407847932 Sandra Voremberg Pediatrics Physician · Millburn, NJ NPI 1689656225 Millburn Primary Care LLC Internal Medicine Physician · Millburn, NJ NPI 1033194600 Richard Taddeo Primary Podiatric Medicine Podiatrist · Millburn, NJ NPI 1679533798 Janine Ferrigno-Taddeo Foot Surgery Podiatrist · Millburn, NJ NPI 1205896321 Howard Blank Orthopaedic Surgery Physician · Millburn, NJ NPI 1992763999 Edward Burak Diagnostic Radiology Physician · Millburn, NJ NPI 1700995768

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-01-23.