Isaac O'Neal, M.D.

Internal Medicine

GenderMaleNPI1598809626Affiliated sites1

Affiliated Health Centers

Isaac O'Neal is affiliated with 1 federally qualified health center location.

Mary Eliza Mahoney Health Center @110 William Street

110 William St, Newark, NJ 07102-1290

Medicare

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Primary Care Services

Preventive care, chronic disease management, and routine health services for all ages.

Annual physicals

Chronic disease management

Immunizations

Preventive screenings

Acute illness care

Hypertension & diabetes management

Referral coordination

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Clinician information is sourced from the NPPES National Provider Registry (February 2026) and reflects self-reported practice locations. Individual providers may have joined or left since the last registry update.

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Internal Medicine

Providing internal medicine services at federally qualified health centers with sliding fee scale options.

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Affiliated Health Center

Mary Eliza Mahoney Health Center @110 William Street

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Isaac O'Neal, M.D.

Affiliated Health Centers

Primary Care Services

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Internal Medicine

Affiliated Health Center

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