Jennifer Collar, CNP
Jennifer Collar, CNP is a Neonatal Nurse Practitioner in Melrose, MA, registered under NPI 1881390029. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 585 LEBANON ST, Melrose, MA 02176. 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 |
|---|---|---|
| RN284243 | MA | Acute Care Nurse Practitioner |
| RN284243 | MA | Neonatal Nurse Practitioner primary |
This provider holds licence RN284243 issued in MA. 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 - Nurse Practitioner
- PAC ID
- 6103290036
- Enrollment ID
- I20230316000754
Medicare enrolment is recorded as approved under the provider type Practitioner - Nurse Practitioner. 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 Neonatal covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LN0000X
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 | |
|---|---|---|---|---|
| 363LA2100X | Acute Care Nurse Practitioner Acute Care | RN284243 | MA | |
| 363LN0000X | Neonatal Nurse Practitioner Neonatal | RN284243 | MA | primary |
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 | 1881390029 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 31, 2023 |
| Last updated | Mar 11, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | CNP |
| Practice address |
585 LEBANON ST Melrose, MA 02176 (781) 979-3000 |
| Mailing address |
960 MASSACHUSETTS AVE STE 2 Boston, MA 02118 |
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 | 8 | 1 | 3 | 9 | 0 | 0 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 7 | 1 | 6 | 9 | 0 | 0 | 4 |
Sum = 61 · next multiple of 10 = 70 · check digit = 9 · actual last digit = 9
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.