Catherine Johnson, O.D.
Catherine Johnson, O.D. is a provider specialising in Optometrist in Denham Springs, LA, registered under NPI 1003225921.
Getting there
Here is what surrounds this office in Denham Springs, based on OpenStreetMap data collected Sep 12, 2026. Parking is available about 0.46 mi away. If you arrive early, there is a coffee shop 0.47 mi away.
Getting here and what is nearby
Restaurant La Carreta 0.20 mi ~4 min
Restaurant Sonic 0.25 mi ~6 min
1345 South Range Avenue, Denham Springs 70726
Mo-Th 06:00-23:00; Fr 06:00-24:00; Sa 07:00-24:00; Su 07:00-23:00
Parking 0.37 mi ~8 min
Parking 0.40 mi ~9 min
Restaurant Papi's Mexican Cuisine 0.40 mi ~8 min
Gas station Murphy USA 0.44 mi ~9 min
Parking 0.46 mi ~10 min
Coffee CC's Coffee House 0.47 mi ~10 min
2200 Corporal Shawn Kelly Memorial Boulevard, Denham Springs 70726
06:00-20:00
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 1790-724T | LA | Optometrist primary |
This provider holds licence 1790-724T issued in LA. 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 - Optometry
- PAC ID
- 8325269525
- Enrollment ID
- I20141030002355
Medicare enrolment is recorded as approved under the provider type Practitioner - Optometry. 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 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
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 | 1003225921 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 5, 2014 |
| Last updated | Nov 13, 2024 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | O.D. |
| Practice address |
222 VETERANS BLVD Denham Springs, LA 70726 (225) 791-2020 Fax (225) 791-2077 |
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 | 0 | 0 | 3 | 2 | 2 | 5 | 9 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 2 | 1 | 9 | 4 |
Sum = 49 · next multiple of 10 = 50 · check digit = 1 · actual last digit = 1
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.