Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Julian Felder, M.D.

Neuroradiology Physician in Forest Hills, NY · enumerated 2014.

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

National Provider Identifier

1639580244

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Registry record

Entity type Individual (Type 1)

Name Julian Felder

Credential M.D.

Sex Male

Practice address 20 Markwood Rd, Forest Hills, NY, 11375

Phone (917) 748-0166

Enumeration date May 16, 2014

Last updated in NPPES Feb 26, 2020

Taxonomy & licenses

2085N0700X Neuroradiology Physician Allopathic & Osteopathic Physicians · License 0337801 (NY) Primary

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

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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Julian Felder's NPI record?

Cross-check NPI 1639580244 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1639580244 active?

Yes, as of the latest NPPES snapshot, NPI 1639580244 is active (record last updated 2020-02-26).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-02-26.