ESSEX OPTICAL CORPORATION
ESSEX OPTICAL CORPORATION is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1346312170, based in Gloucester, MA. The organization lists 2 taxonomy classifications, with Contact Lens Fitter recorded as primary.
Getting there
The practice address on file is 29 RAILROAD AVENUE, Gloucester, MA 01915. 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 |
|---|---|---|
| 1881 | MA | Contact Lens Fitter primary |
| 1881 | MA | Optician |
This provider holds licence 1881 issued in MA. 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 Contact Lens Fitter covers
An optician or other ancillary support staff person who, where authorized by state law and trained or certified to do so, may fit or dispense contact lenses to a patient based on the prescription of an optometrist or medical physician. NUCC Health Care Provider Taxonomy, code 156FC0801X
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 | |
|---|---|---|---|---|
| 156FC0801X | Contact Lens Fitter Contact Lens Fitter | 1881 | MA | primary |
| 156FX1800X | Optician Optician | 1881 | MA |
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1346312170 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Nov 15, 2006 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Practice address |
29 RAILROAD AVENUE Gloucester, MA 01915 (978) 281-4514 Fax (978) 281-4668 |
| Other identifiers |
1523759
· Medicaid (MA) |
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 | 3 | 4 | 6 | 3 | 1 | 2 | 1 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 3 | 8 | 6 | 6 | 1 | 4 | 1 | 5 |
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.