Joseph Onishchuk, DO

Individual provider Addiction Medicine (Family Medicine) Physician · NPI 1861475758

Joseph Onishchuk, DO is an Addiction Medicine (Family Medicine) Physician in Barrington, New Jersey. Licensed in New Jersey. Registered with an NPI since 2005.

Licensed in: NJ
In the registry since: 2005

What do these letters mean?

DO — Doctor of Osteopathic Medicine: A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

208 White Horse Pike Ste 3
Barrington, NJ 08007-1322
Phone: (856) 617-6519
Fax: (856) 617-0179

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Addiction Medicine (Family Medicine) Physician (primary)	Taxonomy 207QA0401X · Licence 25MB05832000 (NJ)

Record details

NPI number	1861475758
Entity type	Individual (Type 1)
Gender	Male
Credentials	DO
Sole proprietor	No
NPI enumerated	November 23, 2005
Last updated in NPPES	April 30, 2026
Certification date	April 30, 2026
Mailing address	208 White Horse Pike Ste 3, Barrington, NJ 08007-1322