William Eisner
William Eisner is a Clinical Electrophysiology Physical Therapist in Louisville, KY, registered under NPI 1427019199. 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 4420 DIXIE HWY SUITE 122, Louisville, KY 40216. 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 |
|---|---|---|
| 003233 | KY | Clinical Electrophysiology Physical… primary |
| 070022541 | IL | Clinical Electrophysiology Physical… |
| 05007955A | IN | Clinical Electrophysiology Physical… |
| 070022541 | IL | Physical Therapist |
Licences are recorded in 3 states: KY, IL, IN. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Physical Therapist In Private Practice
- PAC ID
- 2961455704
Medicare enrolment is recorded as approved under the provider type Practitioner - Physical Therapist In Private Practice. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
Licensed in 3 states
This provider holds licences in 3 states: Illinois, Indiana and Kentucky. The practice address on file is in Louisville, KY, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- 070022541
- Specialty
- Clinical Electrophysiology Physical…
- Licence
- 05007955A
- Specialty
- Clinical Electrophysiology Physical…
- Licence
- 003233
- Specialty
- Clinical Electrophysiology Physical…
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Electrophysiology, Clinical covers
A licensed physical therapist, including but not limited to an individual who is a Board Certified Specialist in Clinical Electrophysiologic Physical Therapy, who has demonstrated specialized knowledge and skill in electrophysiologic examinations and evaluations and encompasses both the professional and technical components of the observation, recording, analysis, and interpretation of bioelectric muscle and nerve potentials, detected by means of surface or needle electrodes, for the purpose of evaluating the integrity of the neuromuscular system. Electrophysiologic evaluations include, but are not limited to, electrodiagnostic testing, which includes clinical needle electromyography, motor and sensory nerve conduction studies, and other evoked potential procedures. NUCC Health Care Provider Taxonomy, code 2251E1300X
All registered taxonomy codes
This provider registers 4 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2251E1300X | Clinical Electrophysiology Physical Therapist Electrophysiology, Clinical | 003233 | KY | primary |
| 2251E1300X | Clinical Electrophysiology Physical Therapist Electrophysiology, Clinical | 070022541 | IL | |
| 2251E1300X | Clinical Electrophysiology Physical Therapist Electrophysiology, Clinical | 05007955A | IN | |
| 225100000X | Physical Therapist | 070022541 | IL |
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 | 1427019199 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 31, 2006 |
| Last updated | Mar 17, 2026 |
| Status | Active |
| Sole proprietor | No |
| Practice address |
4420 DIXIE HWY SUITE 122 Louisville, KY 40216 (502) 802-8060 Fax (502) 449-9062 |
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 | 2 | 7 | 0 | 1 | 9 | 1 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 4 | 7 | 0 | 1 | 9 | 1 | 9 |
Sum = 61 · next multiple of 10 = 70 · 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.