Corwyn Mosiman, O.D.
Corwyn Mosiman, O.D. is a provider specialising in Optometrist in Watsonville, CA, registered under NPI 1689674145. 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 386 S GREEN VALLEY RD, Watsonville, CA 95076. 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 |
|---|---|---|
| OPT 7532 TPA | CA | Optometrist primary |
| OPT 7532 TPA | CA | Corneal and Contact Management Optometrist |
| OPT 7532 TPA | CA | Low Vision Rehabilitation Optometrist |
| OPT 7532 TPA | CA | Pediatric Optometrist |
| OPT 7532 TPA | CA | Sports Vision Optometrist |
| OPT 7532 TPA | CA | Vision Therapy Optometrist |
| OPT 7532 TPA | CA | Occupational Vision Optometrist |
This provider holds licence OPT 7532 TPA issued in CA. 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 Optometrist covers
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system. NUCC Health Care Provider Taxonomy, code 152W00000X
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 | |
|---|---|---|---|---|
| 152W00000X | Optometrist | OPT 7532 TPA | CA | primary |
| 152WC0802X | Corneal and Contact Management Optometrist Corneal and Contact Management | OPT 7532 TPA | CA | |
| 152WL0500X | Low Vision Rehabilitation Optometrist Low Vision Rehabilitation | OPT 7532 TPA | CA | |
| 152WP0200X | Pediatric Optometrist Pediatrics | OPT 7532 TPA | CA | |
| 152WS0006X | Sports Vision Optometrist Sports Vision | OPT 7532 TPA | CA | |
| 152WV0400X | Vision Therapy Optometrist Vision Therapy | OPT 7532 TPA | CA | |
| 152WX0102X | Occupational Vision Optometrist Occupational Vision | OPT 7532 TPA | CA |
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 | 1689674145 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 27, 2005 |
| Last updated | Aug 2, 2011 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | O.D. |
| Practice address |
386 S GREEN VALLEY RD Watsonville, CA 95076 (831) 724-1063 Fax (831) 724-1067 |
| Other identifiers |
1396787214
· Other (CA) |
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 | 8 | 9 | 6 | 7 | 4 | 1 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 7 | 9 | 3 | 7 | 8 | 1 | 8 |
Sum = 75 · next multiple of 10 = 80 · check digit = 5 · actual last digit = 5
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.