MAYO RETINA, INC.
MAYO RETINA, INC. is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1851561716, based in Garden Grove, CA. The organization lists 2 taxonomy classifications, with Ophthalmologic Surgery Clinic/Center recorded as primary.
Getting there
The practice address on file is 12665 GARDEN GROVE BLVD STE 300, Garden Grove, CA 92843. 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 |
|---|---|---|
| G83501 | CA | Ophthalmologic Surgery Clinic/Center primary |
| 20A9551 | CA | Medical Specialty Clinic/Center |
This provider holds licence G83501 issued in CA. 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
- Part B Supplier - Clinic/group Practice
- PAC ID
- 9739259979
- Enrollment ID
- O20080530000618
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. 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 Ophthalmologic Surgery covers
Definition to come... NUCC Health Care Provider Taxonomy, code 261QS0132X
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 | |
|---|---|---|---|---|
| 261QS0132X | Ophthalmologic Surgery Clinic/Center Ophthalmologic Surgery | G83501 | CA | primary |
| 261QM2500X | Medical Specialty Clinic/Center Medical Specialty | 20A9551 | 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-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 | 1851561716 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Mar 7, 2008 |
| Last updated | Jan 10, 2026 |
| Status | Active |
| Practice address |
12665 GARDEN GROVE BLVD STE 300 Garden Grove, CA 92843 (657) 667-0817 Fax (657) 667-0819 |
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 | 8 | 5 | 1 | 5 | 6 | 1 | 7 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 1 | 1 | 1 | 6 | 2 | 7 | 2 |
Sum = 54 · next multiple of 10 = 60 · check digit = 6 · actual last digit = 6
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.