Russell Langan, MD
Russell Langan, MD is a Surgical Oncology Physician in Livingston, NJ, registered under NPI 1063646313. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 94 OLD SHORT HILLS ROAD SAINT BARNABAS MEDICAL CENTER DEPARTMENT OF SURGERY, Livingston, NJ 07039. 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 |
|---|---|---|
| 25MA10099400 | NJ | Surgical Oncology Physician primary |
This provider holds licence 25MA10099400 issued in NJ. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Surgical Oncology
- PAC ID
- 2961775382
Medicare enrolment is recorded as approved under the provider type Practitioner - Surgical Oncology. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Surgical Oncology covers
A surgical oncologist is a well-qualified surgeon who has obtained additional training and experience in the multidisciplinary approach to the prevention, diagnosis, treatment, and rehabilitation of cancer patients, and devotes a major portion of his or her professional practice to these activities and cancer research. NUCC Health Care Provider Taxonomy, code 2086X0206X
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 | 1063646313 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 14, 2009 |
| Last updated | Sep 28, 2017 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | MD |
| Practice address |
94 OLD SHORT HILLS ROAD SAINT BARNABAS MEDICAL CENTER DEPARTMENT OF SURGERY Livingston, NJ 07039 (973) 322-5995 |
| Mailing address |
DEPARTMENT OF SURGERY 94 OLD SHORT HILLS ROAD Livingston, NJ 07039 |
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 | 0 | 6 | 3 | 6 | 4 | 6 | 3 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 3 | 3 | 3 | 4 | 3 | 3 | 2 |
Sum = 47 · next multiple of 10 = 50 · check digit = 3 · actual last digit = 3
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.