Are you Rex A. Werner, O.D.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 2650 Jamacha Rd, Suite 155, El Cajon, CA 92019
About Dr. Werner
Based in El Cajon, CA, Rex A. 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 specializing in optometrist. According to Medicare claims data, Rex cared for 608 Medicare patients across 757 services. The services billed most often include photography of the retina, established patient complete exam of visual system, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. NPI 1891760716 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (619) 670-6296
- Email not available
Practice Locations
2650 JAMACHA RD SUITE 155
El Cajon, CA 92019
Conditions Commonly Evaluated or Treated
Within Optometry generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Contact lens issues
Cornea conditions
Corneal issues
Eye conditions
Eye discomfort
Eye diseases
Eye infections
Eye inflammation
Eye injuries
Eye irritation
Eye surface issues
Eyelid conditions
Eyelid issues
Pediatric eye conditions
Pupil issues
Tear duct issues
Vision changes
- Blurry Vision
- Color Blindness
- Distorted Vision
- Double Vision
- Eye Floaters and Flashes
- Eye Strain
- Farsightedness
- Halos Around Lights
- Light Sensitivity
- Night Blindness
- Posterior vitreous detachment
- Tunnel Vision
- Visual Migraines
Procedures & services
Most searched procedures
Contact lens exams
- Bifocal or Multifocal Contact Lens Fitting
- Contact Lens Training
- Plano (Non-Prescription) Colored Contact Lens Exam
- Toric Contact Lens Fitting
Dry eye treatments
Examinations
- Comprehensive medical eye examination
- Diabetic Eye Exam
- DMV Vision Test
- Low Vision Assessment
- Pediatric Eye Exam
Eyelid care
Eyelid treatments
General exams
Glasses and eyewear
- Blue Light Glasses Consultation
- Eyeglass Frame Adjustment and Repair
- Prescription Sunglasses Consultation
- Prism Eyeglasses Fitting
Imaging & tests
- Color Vision Testing
- Corneal topography
- Coronary optical coherence tomography
- Eye-pressure measurement
- Pachymetry
- Retinal photography
- Visual Field Test
Imaging and scans
Minor procedures
Specialty lenses
Surgical evaluations
Tear duct procedures
Therapy
Urgent care
Vision correction
Procedures Most Often Billed to Medicare
757 services · 608 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Photography of the retina | Treatment | 92250 |
220 | More often than most peers in Optometry |
| Established patient complete exam of visual system | Treatment | 92014 |
169 | More often than most peers in Optometry |
| Exam of visual field with extended testing | Treatment | 92083 |
56 | More often than most peers in Optometry |
| Imaging of optic nerve | Treatment | 92133 |
53 | More often than most peers in Optometry |
| Imaging of retina | Treatment | 92134 |
41 | As often as other peers in Optometry |
| Evaluation of eye adaptation to light and dark with interpretation and report | Treatment | 92284 |
27 | As often as other peers in Optometry |
| New patient complete exam of visual system | Treatment | 92004 |
27 | As often as other peers in Optometry |
| Exam of the internal drainage system of eye | Treatment | 92020 |
19 | As often as other peers in Optometry |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
73 | More often than most peers in Optometry |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
55 | As often as other peers in Optometry |
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 8
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.
Common questions
What does Rex A. Werner specialize in?
Rex A. Werner is an optometry in El Cajon, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Rex A. Werner located?
Rex A. 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 Rex A. Werner's phone number?
The number on file is (619) 670-6296. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Rex A. Werner's NPI number?
Rex A. 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 Rex A. Werner train?
Rex A. 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 Rex A. Werner been practicing?
Rex A. Werner has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
What does Rex A. Werner do most often?
According to Medicare billing data, Rex A. 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 Rex A. Werner confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Rex A. Werner. If this is you, claiming it is free.
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Guide.md listings do not constitute medical advice or an endorsement.