Gary Nielan
Gary Nielan is a Pediatric Adolescent Medicine Physician in Wilbraham, MA, registered under NPI 1568458479.
Getting there
The practice address on file is 2207 BOSTON RD, Wilbraham, MA 01095. 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 |
|---|---|---|
| 155058 | MA | Pediatric Adolescent Medicine Physician primary |
This provider holds licence 155058 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
- Order And Referring Only - Pediatric Medicine
- PAC ID
- 6406038454
- Enrollment ID
- I20160629001821
Medicare enrolment is recorded as approved under the provider type Order And Referring Only - Pediatric Medicine. 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 Adolescent Medicine covers
A pediatrician who specializes in adolescent medicine is a multi-disciplinary healthcare specialist trained in the unique physical, psychological and social characteristics of adolescents, their healthcare problems and needs. NUCC Health Care Provider Taxonomy, code 2080A0000X
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 | 1568458479 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 26, 2005 |
| Last updated | Mar 7, 2023 |
| Status | Active |
| Sole proprietor | No |
| Practice address |
2207 BOSTON RD Wilbraham, MA 01095 (413) 599-1201 Fax (413) 596-2940 |
| Other identifiers |
2017078
· Other 155058 · Other 23378 · Other 28036 · Other 353451 · Other J18133 · Other 102170 · Other 1550588404 · Other 3182916 · Medicaid (MA) 1204585 · Other 155058 · Other 975887 · Other 010155058MA01 · Other 201928 · Other 000000008141 · Other |
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 | 5 | 6 | 8 | 4 | 5 | 8 | 4 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 5 | 3 | 8 | 8 | 5 | 7 | 4 | 5 |
Sum = 71 · next multiple of 10 = 80 · 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.