Steven Ludwig, M.D.
Steven Ludwig, M.D. is an Orthopaedic Surgery of the Spine Physician in Baltimore, MD, registered under NPI 1912954454. This provider registers 7 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 22 S GREENE ST, Baltimore, MD 21201. 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 |
|---|---|---|
| D0058503 | MD | Orthopaedic Surgery of the Spine Physician primary |
| D0058503 | MD | Orthopaedic Surgery Physician |
| D0058503 | MD | Orthopaedic Hand Surgery Physician |
| D0058503 | MD | Adult Reconstructive Orthopaedic Surgery… |
| D0058503 | MD | Orthopaedic Foot and Ankle Surgery… |
| D0058503 | MD | Sports Medicine (Orthopaedic Surgery)… |
| D0058503 | MD | Orthopaedic Trauma Physician |
This provider holds licence D0058503 issued in MD. 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 - Orthopedic Surgery
- PAC ID
- 2264526078
- Enrollment ID
- I20101027001046
Medicare enrolment is recorded as approved under the provider type Practitioner - Orthopedic Surgery. 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 Orthopaedic Surgery of the Spine covers
Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, orthopaedic surgeons of the spine deal with the evaluation and nonoperative and operative treatment of the full spectrum of primary spinal disorders including trauma, degenerative, deformity, tumor, and reconstructive. NUCC Health Care Provider Taxonomy, code 207XS0117X
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 | |
|---|---|---|---|---|
| 207XS0117X | Orthopaedic Surgery of the Spine Physician Orthopaedic Surgery of the Spine | D0058503 | MD | primary |
| 207X00000X | Orthopaedic Surgery Physician | D0058503 | MD | |
| 207XS0106X | Orthopaedic Hand Surgery Physician Hand Surgery | D0058503 | MD | |
| 207XS0114X | Adult Reconstructive Orthopaedic Surgery Physician Adult Reconstructive Orthopaedic Surgery | D0058503 | MD | |
| 207XX0004X | Orthopaedic Foot and Ankle Surgery Physician Foot and Ankle Surgery | D0058503 | MD | |
| 207XX0005X | Sports Medicine (Orthopaedic Surgery) Physician Sports Medicine | D0058503 | MD | |
| 207XX0801X | Orthopaedic Trauma Physician Orthopaedic Trauma | D0058503 | MD |
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 | 1912954454 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 30, 2006 |
| Last updated | Mar 19, 2008 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
22 S GREENE ST Baltimore, MD 21201 (410) 328-6040 |
| Mailing address |
PO BOX 64134 Baltimore, MD 21264 |
| Other identifiers |
1912954454
· Other (MD) |
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 | 9 | 1 | 2 | 9 | 5 | 4 | 4 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 2 | 2 | 9 | 5 | 8 | 4 | 1 |
Sum = 66 · next multiple of 10 = 70 · check digit = 4 · actual last digit = 4
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.