Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MICHAEL B O'NEILL MD
NPI 1477510782
Pediatrics in Sparta, NJ

Q: What is Michael O'neill's NPI number?

The NPI number for Michael O'neill is 1477510782. It was assigned to this individual provider in the NPPES registry on April 28, 2006.

Q: What is Michael O'neill's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Q: When was this NPI record last updated?

The NPPES record for Michael O'neill was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 28, 2006

328 SPARTA AVE, SPARTA, NJ 07871(973) 729-2197(973) 729-5653 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About Dr. Michael B O'neill Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MICHAEL B O'NEILL MD (NPI 1477510782) is an individual pediatrics provider in Sparta, New Jersey, licensed in New Jersey (MA029820) and active in the NPI registry since April 2006.

NPPES Registry Identity

NPI1477510782

Entity TypeIndividualMale

Primary Taxonomy208000000X

Provider Legal NameDR. MICHAEL B O'NEILLCredential: MD

Location Address328 SPARTA AVESparta, NJ 07871

Mailing Address328 Sparta AveSparta, NJ 07871 · (973) 729-2197 · Fax (973) 729-5653

Phone(973) 729-2197

Fax(973) 729-5653

Sole ProprietorNo

Enumeration DateApril 28, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1477510782 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

Licenses✔ Licensed in NJ · MA029820✔ Licensed in PA · MD044367L

Definition

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

328 SPARTA AVE, Sparta, NJ 07871

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Other Identifiers 1

Medicaid1237209NJ

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CLEAR HORIZONS THERAPUTIC SOLUTIONS

Counselor (Mental Health)

328 SPARTA AVE
SPARTA, NJ 07871

Sussex County (973) 670-0031

MR. CHARLES J CARROLL LCSW

Social Worker (Clinical)

328 SPARTA AVE, SUITE F
SPARTA, NJ 07871

Sussex County (973) 729-6333

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michael O'neill's NPI number?

The NPI number for Michael O'neill is 1477510782. It was assigned to this individual provider in the NPPES registry on April 28, 2006.

Where is Michael O'neill located?

Michael O'neill practices at 328 Sparta Ave, Sparta, NJ 07871. The listed phone number is (973) 729-2197.

What is Michael O'neill's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

When was this NPI record last updated?

The NPPES record for Michael O'neill was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.