Mary Tessitore, FNP
Mary Tessitore, FNP is a Family Nurse Practitioner in Alvin, TX, registered under NPI 1497387229.
Getting there
The practice address on file is 23869 W STATE HWY 6 SUITE-D, Alvin, TX 77511. 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 |
|---|---|---|
| AP145049 | TX | Family Nurse Practitioner primary |
This provider holds licence AP145049 issued in TX. 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
- 0840629556
- Enrollment ID
- I20200401000544
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 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 | 1497387229 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 10, 2020 |
| Last updated | Dec 3, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | FNP |
| Practice address |
23869 W STATE HWY 6 SUITE-D Alvin, TX 77511 (832) 532-4426 |
| Mailing address |
3606 CANYON DR Iowa Colony, TX 77583 |
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 | 9 | 7 | 3 | 8 | 7 | 2 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 9 | 7 | 6 | 8 | 5 | 2 | 4 |
Sum = 71 · next multiple of 10 = 80 · 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.