Isabelle Arndt, M.D.
Isabelle Arndt, M.D. is a Pain Medicine (Psychiatry & Neurology) Physician in Philadelphia, PA, registered under NPI 1487765020. This provider registers 4 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 3900 WOODLAND AVE, Philadelphia, PA 19104. 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 |
|---|---|---|
| MD022192E | PA | Pain Medicine (Psychiatry & Neurology)… primary |
| MD022192E | PA | Addiction Medicine (Psychiatry &… |
| MD022192E | PA | Psychiatry Physician |
| MD022192E | PA | Addiction Psychiatry Physician |
This provider holds licence MD022192E issued in PA. 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 Pain Medicine covers
A neurologist, child neurologists or psychiatrist who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic or cancer pain in both hospital and ambulatory settings. Patient care needs may also be coordinated with other specialists. NUCC Health Care Provider Taxonomy, code 2084P2900X
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 | |
|---|---|---|---|---|
| 2084P2900X | Pain Medicine (Psychiatry & Neurology) Physician Pain Medicine | MD022192E | PA | primary |
| 2084A0401X | Addiction Medicine (Psychiatry & Neurology) Physician Addiction Medicine | MD022192E | PA | |
| 2084P0800X | Psychiatry Physician Psychiatry | MD022192E | PA | |
| 2084P0802X | Addiction Psychiatry Physician Addiction Psychiatry | MD022192E | PA |
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 | 1487765020 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 31, 2006 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
3900 WOODLAND AVE Philadelphia, PA 19104 (215) 823-5800 |
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 | 8 | 7 | 7 | 6 | 5 | 0 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 7 | 7 | 5 | 6 | 1 | 0 | 4 |
Sum = 60 · next multiple of 10 = 60 · 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.