Catherine Thal-larsen, F.N.P.
Catherine Thal-larsen, F.N.P. is a Family Nurse Practitioner in Gainesville, VA, registered under NPI 1174774871.
Getting there
The practice address on file is 14535 JOHN MARSHALL HWY, SUITE 212,, Gainesville, VA 20155. 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 |
|---|---|---|
| 0017000751 | VA | Family Nurse Practitioner primary |
This provider holds licence 0017000751 issued in VA. 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
- 1153574686
Medicare enrolment is recorded as approved under the provider type Practitioner - Nurse Practitioner. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Family covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LF0000X
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 | 1174774871 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 1, 2008 |
| Last updated | Mar 19, 2024 |
| Status | Active |
| Sole proprietor | No |
| Credential | F.N.P. |
| Practice address |
14535 JOHN MARSHALL HWY, SUITE 212, Gainesville, VA 20155 (571) 248-0245 Fax (571) 248-0241 |
| Mailing address |
224 D CORNWALL STREET NW STE 403 Leesburg, VA 20176 |
| Other identifiers |
1174774871
(VA) 30017620550001 (VA) |
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 | 1 | 7 | 4 | 7 | 7 | 4 | 8 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 1 | 5 | 4 | 5 | 7 | 8 | 8 | 5 |
Sum = 69 · next multiple of 10 = 70 · 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.