Gail Holtz, NURSE PRACTITIONER
Gail Holtz, NURSE PRACTITIONER is an Adult Health Nurse Practitioner in Hauppauge, NY, registered under NPI 1003632464. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Hauppauge, based on OpenStreetMap data collected Oct 11, 2026. Parking is available about 0.30 mi away.
Getting here and what is nearby
Parking 0.30 mi ~6 min
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 |
|---|---|---|
| 301089 | NY | Adult Health Nurse Practitioner primary |
| 301089-01 | NY | Adult Health Nurse Practitioner |
This provider holds licence 301089 issued in NY. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Adult Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LA2200X
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 | |
|---|---|---|---|---|
| 363LA2200X | Adult Health Nurse Practitioner Adult Health | 301089 | NY | primary |
| 363LA2200X | Adult Health Nurse Practitioner Adult Health | 301089-01 | NY |
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 | 1003632464 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 2, 2024 |
| Last updated | Dec 2, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | NURSE PRACTITIONER |
| Practice address |
299 BOW DR Hauppauge, NY 11788 (631) 974-6937 |
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 | 6 | 3 | 2 | 4 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 3 | 4 | 4 | 3 |
Sum = 46 · next multiple of 10 = 50 · check digit = 4 · actual last digit = 4
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.