James Ludemann, MSN, APRN, CPNP-AC
James Ludemann, MSN, APRN, CPNP-AC is an Acute Care Nurse Practitioner in Atlanta, GA, registered under NPI 1326631276. This provider registers 7 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
The practice address on file is 1400 TULLIE RD NE FL 4, Atlanta, GA 30329. 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 |
|---|---|---|
| APRN-NP259704 | GA | Acute Care Nurse Practitioner primary |
| RN259704 | GA | Registered Nurse |
| RN259704 | GA | Pediatric Registered Nurse |
| RN259704 | GA | Oncology Registered Nurse |
| RN259704 | GA | Pediatric Oncology Registered Nurse |
| RN259704 | GA | Infusion Therapy Registered Nurse |
| APRN-NP259704 | GA | Pediatric Nurse Practitioner |
This provider holds licence APRN-NP259704 issued in GA. 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
- Order And Referring Only - Nurse Practitioner
- PAC ID
- 9537699871
- Enrollment ID
- I20250215000146
Medicare enrolment is recorded as approved under the provider type Order And Referring Only - 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 7 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 | APRN-NP259704 | GA | primary |
| 163W00000X | Registered Nurse | RN259704 | GA | |
| 163WP0200X | Pediatric Registered Nurse Pediatrics | RN259704 | GA | |
| 163WX0200X | Oncology Registered Nurse Oncology | RN259704 | GA | |
| 163WP0218X | Pediatric Oncology Registered Nurse Pediatric Oncology | RN259704 | GA | |
| 163WI0500X | Infusion Therapy Registered Nurse Infusion Therapy | RN259704 | GA | |
| 363LP0200X | Pediatric Nurse Practitioner Pediatrics | APRN-NP259704 | GA |
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 | 1326631276 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 11, 2021 |
| Last updated | Nov 21, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | MSN, APRN, CPNP-AC |
| Practice address |
1400 TULLIE RD NE FL 4 Atlanta, GA 30329 (404) 785-5873 |
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 | 3 | 2 | 6 | 6 | 3 | 1 | 2 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 3 | 4 | 6 | 3 | 3 | 2 | 2 | 5 |
Sum = 54 · next multiple of 10 = 60 · check digit = 6 · actual last digit = 6
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.