One Oak Medical Group
One Oak Medical Group holds 5 active organization NPIs in the federal registry, with practice locations in 5 New Jersey cities. Each location can bill under its own NPI.
Search the organization with your city to find the NPI for the location you visit or bill.
Find a location's NPIClifton has the most NPIs, 1
Source: CMS NPPES monthly file of Aug 9, 2026, organization NPIs by practice city.
Most NPIs were issued in 2019 and 2020
Source: CMS NPPES, enumeration dates.
2 NPIs were issued in 2019 alone, more than in any other year; none in 1 of the years between.
Clifton locations
The city with the most One Oak Medical Group NPIs. The full list of all 5 follows.
| NPI | Location | Primary taxonomy | Issued |
|---|---|---|---|
| 1831735166 | 905 ALLWOOD RD, Clifton | Specialist | Nov 21, 2019 |
All 5 locations, by city
| NPI | Location | Primary taxonomy | Issued |
|---|---|---|---|
| 1831735166 | 905 ALLWOOD RD, Clifton | Specialist | Nov 21, 2019 |
| 1003429036 | 1200 GREEN ST, Iselin | Orthopaedic Surgery of the Spine Physician | Aug 28, 2020 |
| 1366055303 | 109 VALLEY RD, Montclair | Obstetrics & Gynecology Physician | Aug 28, 2020 |
| 1780220764 | 2 SEARS DR, Paramus | Specialist | Nov 25, 2019 |
| 1669997359 | 342 HAMBURG TPKE STE 202, Wayne | Orthopaedic Surgery Physician | Aug 3, 2017 |
Checking an organization
- Match the NPI to the exact location you will visit or bill; each location can have its own.
- Confirm the business entity with the secretary of state.
- Check the HHS-OIG exclusion list for the organization and its owners.
- Verify each clinician you will see on their own record and with the state license search.
Common questions
Why does One Oak Medical Group have 5 NPIs?
An organization may obtain more than one Type 2 NPI, for example for separate locations or units that bill on their own. One Oak Medical Group's NPIs list practice locations in 5 cities.
Is an organization NPI a license?
No. An NPI identifies who bills. Facilities and the clinicians who work there are licensed separately by the state.
Source: CMS National Plan and Provider Enumeration System (NPPES), monthly file of Aug 9, 2026 (NPPES files on CMS.gov). An NPI identifies who bills; it is not a license.