Lois Demaio, FNP, RNFA
Lois Demaio, FNP, RNFA is a Registered Nurse First Assistant in Mount Kisco, NY, registered under NPI 1477541118. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 400 E MAIN ST NORTHERN WESTCHESTER HOSPITAL , SURGICAL SERVICES DEPA, Mount Kisco, NY 10549. 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 |
|---|---|---|
| 343024 | NY | Registered Nurse First Assistant primary |
| 343024 | NY | Registered Nurse |
| F333655 | NY | Family Nurse Practitioner |
This provider holds licence 343024 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 - Nurse Practitioner
- PAC ID
- 7618926106
- Enrollment ID
- I20050121000857
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 Registered Nurse First Assistant covers
A perioperative registered nurse who works in collaboration with the surgeon and other health care team members to achieve optimal outcomes. The RNFA has acquired the necessary knowledge, judgment, and skills specific to the expanded role of RNFA clinical practice. Intraoperatively, the RNFA assists the surgeon. NUCC Health Care Provider Taxonomy, code 163WR0006X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 163WR0006X | Registered Nurse First Assistant Registered Nurse First Assistant | 343024 | NY | primary |
| 163W00000X | Registered Nurse | 343024 | NY | |
| 363LF0000X | Family Nurse Practitioner Family | F333655 | 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 | 1477541118 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 6, 2005 |
| Last updated | Apr 30, 2008 |
| Status | Active |
| Sole proprietor | No |
| Credential | FNP, RNFA |
| Practice address |
400 E MAIN ST NORTHERN WESTCHESTER HOSPITAL , SURGICAL SERVICES DEPA Mount Kisco, NY 10549 (914) 666-1477 |
| Other identifiers |
4153130
· Other 000000092367 · Other (NY) HEALTHNET · Other (NY) 0602250000031 · Other (NY) 7599200 · Other (NY) P3641736 · 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 | 4 | 7 | 7 | 5 | 4 | 1 | 1 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 5 | 7 | 1 | 4 | 2 | 1 | 2 |
Sum = 52 · next multiple of 10 = 60 · check digit = 8 · actual last digit = 8
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.