Kristy Selvaggi, RPAC
Kristy Selvaggi, RPAC is a Physician Assistant in West Islip, NY, registered under NPI 1003034141.
Getting there
Here is what surrounds this office in West Islip, based on OpenStreetMap data collected Aug 31, 2026. Parking is available about 309 ft away. The nearest transit stop is 856 ft away, served by Montauk Highway & Helwig Lane.
Getting here and what is nearby
Parking 233 ft ~1 min
Parking 286 ft ~2 min
Parking 309 ft ~2 min
Transit Montauk Highway @ Good Samaritan Hospital 663 ft ~3 min
Transit Montauk Highway & Keith Lane 735 ft ~3 min
Transit Montauk Highway & Helwig Lane 856 ft ~4 min
Restaurant Villa Monaco Restaurant 968 ft ~4 min
778 Montauk Highway, West Islip 11795
Mo-Fr 11:00-22:00, Sa-Su 14:00-22:00
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 010787 | NY | Physician Assistant primary |
This provider holds licence 010787 issued in NY. 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 - Physician Assistant
- PAC ID
- 1355492646
- Enrollment ID
- I20090626000172
Medicare enrolment is recorded as approved under the provider type Practitioner - Physician Assistant. 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 Physician Assistant covers
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician. NUCC Health Care Provider Taxonomy, code 363A00000X
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 | 1003034141 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 23, 2007 |
| Last updated | Oct 17, 2014 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | RPAC |
| Practice address |
1000 MONTAUK HIGHWAY GOOD SAMARITAN HOSPITAL West Islip, NY 11795 (631) 376-4444 |
| Mailing address |
23 ACORN LANE Stony Brook, NY 11790 |
| Other names |
Kristy Helin Former Legal Business Name |
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 | 0 | 3 | 0 | 3 | 4 | 1 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 3 | 8 | 1 | 8 |
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.