HealthCareAtlasUSA

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Doctors / NJ

GRETHEL JOHN, NP

NURSE PRACTITIONER

Graduated: 2021

NPI: 1770241663

Practice Locations (1)

BARNABAS HEALTH MEDICAL GROUP PC

94 OLD SHORT HILLS RD

LIVINGSTON, NJ 070395672

9733227000

Source: CMS National Downloadable File, September 2026.

GRETHEL JOHN, NP | HealthCareAtlasUSA