Terence Tack, OD
Terence Tack, OD is a provider specialising in Optometrist in Longview, WA, registered under NPI 1508925405. 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 820 OCEAN BEACH HWY SUITE 100, Longview, WA 98632. 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 |
|---|---|---|
| OD00000948 | WA | Optometrist primary |
| OD00000948 | WA | Corneal and Contact Management Optometrist |
| OD00000948 | WA | Low Vision Rehabilitation Optometrist |
| OD00000948 | WA | Pediatric Optometrist |
| OD00000948 | WA | Sports Vision Optometrist |
| OD00000948 | WA | Vision Therapy Optometrist |
| OD00000948 | WA | Occupational Vision Optometrist |
This provider holds licence OD00000948 issued in WA. 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 | OD00000948 | WA | primary |
| 152WC0802X | Corneal and Contact Management Optometrist Corneal and Contact Management | OD00000948 | WA | |
| 152WL0500X | Low Vision Rehabilitation Optometrist Low Vision Rehabilitation | OD00000948 | WA | |
| 152WP0200X | Pediatric Optometrist Pediatrics | OD00000948 | WA | |
| 152WS0006X | Sports Vision Optometrist Sports Vision | OD00000948 | WA | |
| 152WV0400X | Vision Therapy Optometrist Vision Therapy | OD00000948 | WA | |
| 152WX0102X | Occupational Vision Optometrist Occupational Vision | OD00000948 | WA |
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 | 1508925405 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 6, 2006 |
| Last updated | May 2, 2011 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | OD |
| Practice address |
820 OCEAN BEACH HWY SUITE 100 Longview, WA 98632 (360) 636-2020 |
| Other identifiers |
2899201
· Medicaid (WA) 410005544 · Other (WA) 50D2022229 · Other (WA) |
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 | 5 | 0 | 8 | 9 | 2 | 5 | 4 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 5 | 0 | 8 | 9 | 2 | 1 | 4 | 0 |
Sum = 55 · next multiple of 10 = 60 · 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.