Melissa Carranza, ACNP
Melissa Carranza, ACNP is an Acute Care Nurse Practitioner in Houston, TX, registered under NPI 1700882511. 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 5115 FANNIN ST STE 801, Houston, TX 77004. 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 |
|---|---|---|
| AP112055 | TX | Acute Care Nurse Practitioner primary |
| AP112055 | TX | Critical Care Medicine Nurse Practitioner |
| 636052 | TX | Nurse Practitioner |
This provider holds licence AP112055 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
- 1658497854
- Enrollment ID
- I20100924000850
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 Acute Care covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LA2100X
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 | |
|---|---|---|---|---|
| 363LA2100X | Acute Care Nurse Practitioner Acute Care | AP112055 | TX | primary |
| 363LC0200X | Critical Care Medicine Nurse Practitioner Critical Care Medicine | AP112055 | TX | |
| 363L00000X | Nurse Practitioner | 636052 | TX |
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 | 1700882511 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 27, 2005 |
| Last updated | May 26, 2026 |
| Status | Active |
| Sole proprietor | No |
| Credential | ACNP |
| Practice address |
5115 FANNIN ST STE 801 Houston, TX 77004 (713) 790-0841 Fax (713) 790-9663 |
| Other identifiers |
1700882511
· Medicaid (TX) |
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 | 7 | 0 | 0 | 8 | 8 | 2 | 5 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 7 | 0 | 0 | 7 | 8 | 4 | 5 | 2 |
Sum = 59 · next multiple of 10 = 60 · 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.