Charles Eifrig, M.D.
Charles Eifrig, M.D. is a Retina Specialist (Ophthalmology) Physician in Laguna Hills, CA, registered under NPI 1306812979. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 23521 PASEO DE VALENCIA SUITE 207 (TAJ MAJAL BUILDING), Laguna Hills, CA 92653. 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 |
|---|---|---|
| C53104 | CA | Retina Specialist (Ophthalmology)… primary |
| 200300335 | NC | Ophthalmology Physician |
| C53104 | CA | Ophthalmology Physician |
Licences are recorded in 2 states: CA, NC. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Ophthalmology
- PAC ID
- 2961433198
- Enrollment ID
- I20080411000262
Medicare enrolment is recorded as approved under the provider type Practitioner - Ophthalmology. 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.
Licensed in 2 states
This provider holds licences in 2 states: California and North Carolina. The practice address on file is in Laguna Hills, CA, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- C53104
- Specialty
- Retina Specialist (Ophthalmology)…
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Retina Specialist covers
An ophthalmologist who specializes in the diagnosis and treatment of vitreoretinal diseases. NUCC Health Care Provider Taxonomy, code 207WX0107X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207WX0107X | Retina Specialist (Ophthalmology) Physician Retina Specialist | C53104 | CA | primary |
| 207W00000X | Ophthalmology Physician | 200300335 | NC | |
| 207W00000X | Ophthalmology Physician | C53104 | 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 | 1306812979 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 24, 2006 |
| Last updated | Mar 31, 2017 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
23521 PASEO DE VALENCIA SUITE 207 (TAJ MAJAL BUILDING) Laguna Hills, CA 92653 (949) 707-5125 |
| Other identifiers |
DB4007
· Other P00102182 · Other 562043271 · Other 134EF · Other 2090301 · Other 562043271 · Other 562043271 · Other C7150 · Other 26600 · Other 562043271 · Other 89134EF · Medicaid (NC) 2115757 · Other 3201207 · Other 7674444 · Other 014T8 · Other 89014T8 · Medicaid (NC) 562043271 · Other |
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 | 0 | 6 | 8 | 1 | 2 | 9 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 3 | 0 | 6 | 7 | 1 | 4 | 9 | 5 |
Sum = 61 · next multiple of 10 = 70 · check digit = 9 · actual last digit = 9
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.