ALDEN LEIFER, MD. PC
ALDEN LEIFER, MD. PC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1679635205, based in Paterson, NJ. The organization lists 2 taxonomy classifications, with Medical Specialty Clinic/Center recorded as primary.
Getting there
The practice address on file is 680 BROADWAY STE 114, Paterson, NJ 07514. 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 |
|---|---|---|
| MA46643 | NJ | Medical Specialty Clinic/Center primary |
This provider holds licence MA46643 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
- Part B Supplier - Clinic/group Practice
- PAC ID
- 2062465586
Enrolled in Medicare 2 times, across 1 state:
| State | Enrollment ID | Provider type |
|---|---|---|
| New Jersey | O20050224000709 | Part B Supplier - Clinic/group Practice |
| New Jersey | O20100930093171 | Dme Supplier - Physician - Ophthalmology |
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. There are 2 separate enrolment records. 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.
What Medical Specialty covers
An entity, facility, or distinct part of a facility providing diagnostic, treatment, and prescriptive services related to a specific area of medical specialization. Frequently used for Title V related Children's Specialty services or to meet specific public health needs (e.g., infectious diseases or breast and cervical cancer). NUCC Health Care Provider Taxonomy, code 261QM2500X
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 | |
|---|---|---|---|---|
| 261QM2500X | Medical Specialty Clinic/Center Medical Specialty | MA46643 | NJ | primary |
| 332H00000X | Eyewear Supplier | — | — |
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1679635205 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Dec 13, 2006 |
| Last updated | Jul 21, 2022 |
| Status | Active |
| Practice address |
680 BROADWAY STE 114 Paterson, NJ 07514 (973) 742-4747 Fax (973) 742-0629 |
| Mailing address |
680 BROADWAY SUITE 114 Paterson, NJ 07514 |
| Other identifiers |
0357405
· Medicaid (NJ) |
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 | 6 | 7 | 9 | 6 | 3 | 5 | 2 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 5 | 9 | 3 | 3 | 1 | 2 | 0 |
Sum = 55 · next multiple of 10 = 60 · check digit = 5 · actual last digit = 5
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.