Ajay Kumar, M.D.
Ajay Kumar, M.D. is a Pain Medicine (Physical Medicine & Rehabilitation) Physician in Watchung, NJ, registered under NPI 1871545111.
Getting there
The practice address on file is 459 WATCHUNG AVE, Watchung, NJ 07069. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 25MA07877200 | NJ | Pain Medicine (Physical Medicine &… primary |
| MD423585 | PA | Pain Medicine (Physical Medicine &… |
Licences are recorded in 2 states: NJ, PA. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Physical Medicine And Rehabilitation
- PAC ID
- 3476530825
Enrolled in Medicare 3 times, across 3 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Pennsylvania | I20040702000495 | Practitioner - Physical Medicine And Rehabilitation |
| New Jersey | I20050718000124 | Practitioner - Physical Medicine And Rehabilitation |
| New York | I20070911000858 | Practitioner - Physical Medicine And Rehabilitation |
Medicare enrolment is recorded as approved under the provider type Practitioner - Physical Medicine And Rehabilitation. There are 3 separate enrolment records across 3 states (PA, NJ, NY). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
Licensed in 2 states
This provider holds licences in 2 states: New Jersey and Pennsylvania. The practice address on file is in Watchung, NJ, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- 25MA07877200
- Specialty
- Pain Medicine (Physical Medicine &…
- Licence
- MD423585
- Specialty
- Pain Medicine (Physical Medicine &…
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Pain Medicine covers
A physician who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic or cancer pain in both hospital and ambulatory settings. Patient care needs may also be coordinated with other specialists. NUCC Health Care Provider Taxonomy, code 2081P2900X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2081P2900X | Pain Medicine (Physical Medicine & Rehabilitation) Physician Pain Medicine | 25MA07877200 | NJ | primary |
| 2081P2900X | Pain Medicine (Physical Medicine & Rehabilitation) Physician Pain Medicine | MD423585 | PA |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1871545111 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 16, 2006 |
| Last updated | Nov 10, 2010 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | M.D. |
| Practice address |
459 WATCHUNG AVE Watchung, NJ 07069 (973) 756-2424 |
| Mailing address |
10 SUNRISE DR Parsippany, NJ 07054 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 8 | 7 | 1 | 5 | 4 | 5 | 1 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 5 | 1 | 1 | 4 | 1 | 1 | 2 |
Sum = 49 · next multiple of 10 = 50 · check digit = 1 · actual last digit = 1
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.