Ryan Zagalsky, MS, APRN, AGACNP-BC
Ryan Zagalsky, MS, APRN, AGACNP-BC is an Acute Care Nurse Practitioner in New York, NY, registered under NPI 1053834879. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 6 MAIDEN LN RM 500, New York, NY 10038. 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 |
|---|---|---|
| F431176-01 | NY | Acute Care Nurse Practitioner primary |
| 26NR15283800 | NJ | Registered Nurse |
| 26NJ15025300 | NJ | Acute Care Nurse Practitioner |
| RN60738684 | WA | Critical Care Medicine Nurse Practitioner |
| AP60793280 | WA | Critical Care Medicine Nurse Practitioner |
| 642933 | NY | Registered Nurse |
Licences are recorded in 3 states: NY, NJ, WA. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Nurse Practitioner
- PAC ID
- 9537425194
- Enrollment ID
- I20240423001162
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.
Licensed in 3 states
This provider holds licences in 3 states: New Jersey, New York and Washington. The practice address on file is in New York, NY, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- F431176-01
- Specialty
- Acute Care Nurse Practitioner
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Acute Care covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LA2100X
All registered taxonomy codes
This provider registers 6 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 | F431176-01 | NY | primary |
| 163W00000X | Registered Nurse | 26NR15283800 | NJ | |
| 363LA2100X | Acute Care Nurse Practitioner Acute Care | 26NJ15025300 | NJ | |
| 363LC0200X | Critical Care Medicine Nurse Practitioner Critical Care Medicine | RN60738684 | WA | |
| 363LC0200X | Critical Care Medicine Nurse Practitioner Critical Care Medicine | AP60793280 | WA | |
| 163W00000X | Registered Nurse | 642933 | 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 | 1053834879 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 24, 2017 |
| Last updated | May 17, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | MS, APRN, AGACNP-BC |
| Practice address |
6 MAIDEN LN RM 500 New York, NY 10038 (929) 630-4100 |
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 | 5 | 3 | 8 | 3 | 4 | 8 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 1 | 3 | 7 | 3 | 8 | 8 | 5 |
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.