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 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
- Practice location
- 208 White Horse Pike Ste 3, Barrington, NJ 08007
- Phone
- (856) 617-6519
- Enumerated
- Nov 23, 2005
- Entity
- Type 1 · individual
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 ExaminersCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
47% 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 1,187 among the 571 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, mostly food and beverage; the largest payer was Braeburn Inc.. The 309 providers of this specialty with any payment received $1,075.77 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.
Addiction Medicine (Family Medicine) Physician providers in New Jersey
There are 19 addiction medicine (family medicine) physician records in New Jersey.
Other addiction medicine (family medicine) physician records in New Jersey
- Rodney Brunson, DONorthfield, NJ1336247378
- Irene Cergnul, MDUnion, NJ1871683987
- Joseph D'Orazio, M.D.Camden, NJ1609061126
- Yolanda Dagnino, M.D.Cedar Grove, NJ1336497106
- Ernest Egu, MDCamden, NJ1396240156
- Emmanuel Ekulide, M.D.Union, NJ1386803989
- David Gigliotti, DOBerlin, NJ1518920552
- Lara Kobrin, M.D.Camden, NJ1265811939
- Lisa Medvetz, MDWillingboro, NJ1467451823
- Mollie Nisen, MDCamden, NJ1013412386
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?
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 1,187. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.