Alexander Davis, PMHNP
Alexander Davis, PMHNP is a Psychiatric/Mental Health Nurse Practitioner in Saint Louis, MO, registered under NPI 1881289510. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 2650 OLIVE ST, Saint Louis, MO 63103. 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 |
|---|---|---|
| 2021004960 | MO | Psychiatric/Mental Health Registered Nurse |
| 2021004960 | MO | Psychiatric/Mental Health Nurse… primary |
This provider holds licence 2021004960 issued in MO. 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
- 9931516549
- Enrollment ID
- I20210326001953
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 Psychiatric/Mental Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LP0808X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 163WP0808X | Psychiatric/Mental Health Registered Nurse Psychiatric/Mental Health | 2021004960 | MO | |
| 363LP0808X | Psychiatric/Mental Health Nurse Practitioner Psychiatric/Mental Health | 2021004960 | MO | primary |
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 | 1881289510 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 4, 2021 |
| Last updated | Oct 5, 2022 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | PMHNP |
| Practice address |
2650 OLIVE ST Saint Louis, MO 63103 (314) 371-6500 Fax (314) 371-6510 |
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 | 8 | 8 | 1 | 2 | 8 | 9 | 5 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 7 | 1 | 4 | 8 | 9 | 5 | 2 |
Sum = 70 · next multiple of 10 = 70 · check digit = 0 · actual last digit = 0
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.