Physician Profile
Unclaimed ProfileAbout WERNER
Based in El Cajon, CA, Rex Arthur Werner, O.D. is listed in the NPI registry under optometry. Rex graduated from University Alabama Birmingham - School of Optometry in 1989. Rex is also listed as specialising in optometrist.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Werner specialise in?
Dr. Werner is an optometry in El Cajon, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “OPTOMETRY”.
NPI registry
Where is Dr. Werner located?
Dr. Werner is listed at 2650 JAMACHA RD SUITE 155, El Cajon, CA 92019. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Werner's phone number?
The number on file is (619) 670-6296. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Werner's NPI number?
Dr. Werner's National Provider Identifier is 1891760716. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Werner go to medical school?
Dr. Werner attended University Alabama Birmingham - School of Optometry, graduating in 1989. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Werner been practising?
Dr. Werner has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Werner do most often?
According to Medicare billing data, Dr. Werner provides treatments such as photography of the retina and established patient complete exam of visual system, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Werner confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Werner. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (619) 670-6296
- Email not available
Practice Locations
2650 JAMACHA RD SUITE 155
El Cajon, CA 92019
Procedures Most Often Billed to Medicare
757 services · 608 patients · 11 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Photography of the retina | Treatment | 92250 |
220 |
| Established patient complete exam of visual system | Treatment | 92014 |
169 |
| Exam of visual field with extended testing | Treatment | 92083 |
56 |
| Imaging of optic nerve | Treatment | 92133 |
53 |
| Imaging of retina | Treatment | 92134 |
41 |
| Evaluation of eye adaptation to light and dark with interpretation and report | Treatment | 92284 |
27 |
| New patient complete exam of visual system | Treatment | 92004 |
27 |
| Exam of the internal drainage system of eye | Treatment | 92020 |
19 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
73 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
55 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other optometry specialists at this location 2
Same specialty, same street address — most likely the same department or group.
Also at this address 3
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other optometry specialists in El Cajon 7
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at University Alabama Birmingham - School of Optometry 8
Other providers in the same specialty who trained at the same institution.
Class of 1989 at University Alabama Birmingham - School of Optometry 8
Providers who graduated from the same medical school in the same year.
Also performs Photography of the retina 8
Providers in CA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.