Jo Carthey, LMHC
Jo Carthey, LMHC is a Mental Health Counselor in Davenport, IA, registered under NPI 1003231143. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Davenport, based on OpenStreetMap data collected Sep 12, 2026. No dedicated parking is recorded within walking distance, so allow extra time to find street parking. A pharmacy sits 0.48 mi from the entrance (Hy-Vee Pharmacy), which helps if you leave with a prescription.
Getting here and what is nearby
Pharmacy Hy-Vee Pharmacy 0.48 mi ~10 min
Grocery Hy-Vee 0.48 mi ~10 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 10129 | IA | Addiction (Substance Use Disorder)… |
| 074697 | IA | Mental Health Counselor primary |
This provider holds licence 10129 issued in IA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Mental Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 101YM0800X
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 | |
|---|---|---|---|---|
| 101YA0400X | Addiction (Substance Use Disorder) Counselor Addiction (Substance Use Disorder) | 10129 | IA | |
| 101YM0800X | Mental Health Counselor Mental Health | 074697 | IA | 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 | 1003231143 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 26, 2014 |
| Last updated | Jan 26, 2015 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | LMHC |
| Practice address |
2319 E 29TH ST Davenport, IA 52803 (563) 528-4775 |
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 | 0 | 0 | 3 | 2 | 3 | 1 | 1 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 3 | 2 | 1 | 8 |
Sum = 47 · next multiple of 10 = 50 · check digit = 3 · actual last digit = 3
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.