Joseph Onishchuk, DO
Addiction Medicine (Family Medicine) Physician · Barrington, NJ
Joseph Onishchuk, DO is an addiction medicine (family medicine) physician with a practice address in Barrington, New Jersey, and NPI 1861475758, issued on Nov 23, 2005. Check the license (New Jersey 25MB05832000, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Joseph Onishchuk
- Credential
- DO
- Primary taxonomy
- Addiction Medicine (Family Medicine) Physician 207QA0401X
- License number
- 25MB05832000 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 208 White Horse Pike Ste 3, Barrington, NJ 08007
- Phone
- (856) 617-6519
- Enumerated
- Nov 23, 2005
- Record last updated
- Apr 30, 2026
- Fax
- (856) 617-0179
- Entity
- Type 1 · individual
8 nearest addiction medicine (family medicine) physician records → All 22 in New Jersey → Look up another NPI →
Also registered at 208 White Horse Pike Ste 3
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Nardi, M.D.Specialist1285652230
Verify Joseph Onishchuk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MB05832000Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% fewer Medicare Part D claims than the average addiction medicine (family medicine) physician in 2024
624 Medicare Part D claims for 31 beneficiaries, against an average of 664 among the 581 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims.
Most prescribed
- Buprenorphine-Naloxone219 claims
- Alprazolam107 claims
- Dextroamphetamine-Amphetamine53 claims
- Clonazepam45 claims
- Buprenorphine Hcl40 claims
- Carisoprodol20 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $242.52
10 payments; by number, the most common kind was food and beverage; the largest payer was Braeburn Inc. The 305 providers of this specialty with any payment received $1,151.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Joseph Onishchuk among 22 addiction medicine (family medicine) physician records in New Jersey
Joseph Onishchuk, DO is one of 22 addiction medicine (family medicine) physician records with a practice address in New Jersey. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileNo · 45% of these records are
- Record last updated2026 · 32% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QA0401X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Addiction Medicine (Family Medicine) Physician providers in New Jersey
There are 22 addiction medicine (family medicine) physician records in New Jersey.
All 22 in New Jersey → Every provider in Barrington → Addiction Medicine (Family Medicine) Physician nationwide →
The 8 addiction medicine (family medicine) physician records with the nearest ZIP codes
- Ralph Aurigemma, MDTurnersville, NJ 080121013987916
- Lynda Bascelli, M.DVoorhees, NJ 080431558350215
- Joseph Ranieri, DOSewell, NJ 080801851464143
- Robert LaguarinaWoodbury Heights, NJ 080971710519970
- Joseph D'Orazio, M.D.Camden, NJ 081021609061126
- Ernest Egu, MDCamden, NJ 081021396240156
- Lara Kobrin, M.D.Camden, NJ 081021265811939
- Jennifer Moyer, MD, MPHCamden, NJ 081021548793862
Common questions
What is Joseph Onishchuk, DO's NPI number?
Joseph Onishchuk, DO's National Provider Identifier (NPI) is 1861475758, issued on Nov 23, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Onishchuk, DO located?
The NPPES record lists a practice address at 208 White Horse Pike Ste 3, Barrington, NJ, 08007. Phone: (856) 617-6519. Providers update this record themselves, so call before visiting.
How can I verify Joseph Onishchuk, DO's license?
NPPES lists New Jersey license number 25MB05832000, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Joseph Onishchuk, DO prescribe under Medicare Part D?
In 2024, Joseph Onishchuk, DO had 624 Medicare Part D claims for 31 beneficiaries; the average among addiction medicine (family medicine) physician prescribers was 664. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.