Steven Keyser, C.O.
Steven Keyser, C.O. is a provider specialising in Orthotist in Downey, CA, registered under NPI 1639366693. 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 7601 IMPERIAL HWY, Downey, CA 90242. 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 |
|---|---|---|
| CO004796 | Orthotist primary |
Licences are recorded in 0 states: . Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
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 Orthotist covers
A health care professional who is specifically educated and trained to manage comprehensive orthotic patient care, including musculoskeletal and neuromuscular anomalies resulting from injuries or disease processes involving the lower extremity, upper extremity or spinal segment/s and positional deformation of the cranium. Orthotists assess specific patient needs, formulate an appropriate treatment plan, implement the treatment plan and provide follow-up care. NUCC Health Care Provider Taxonomy, code 222Z00000X
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 | |
|---|---|---|---|---|
| 390200000X | Student in an Organized Health Care Education/Training Program | — | — | |
| 222Z00000X | Orthotist | CO004796 | — | 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 | 1639366693 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 3, 2007 |
| Last updated | Nov 15, 2013 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | C.O. |
| Practice address |
7601 IMPERIAL HWY Downey, CA 90242 (562) 401-8115 Fax (562) 803-5569 |
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 | 6 | 3 | 9 | 3 | 6 | 6 | 6 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 6 | 9 | 6 | 6 | 3 | 6 | 9 |
Sum = 77 · next multiple of 10 = 80 · 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.