At a glance
- 477 N El Camino Real Ste C202, Encinitas, CA 92024
About Dr. Cao-Nguyen
Tien Johnny B. Cao-Nguyen, OD is a healthcare provider in Encinitas, CA specializing in optometry. Tien Johnny is also listed as specializing in optometrist. Medicare claims data shows Tien Johnny provided 840 services to 814 patients. 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. This provider record is associated with NPI 1477121713.
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
- (760) 631-3500
- Email not available
Practice Locations
477 N EL CAMINO REAL STE C202
Encinitas, CA 92024
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
840 services · 814 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Photography of the retina | Treatment | 92250 |
282 | More than most peers in Optometry |
| Established patient complete exam of visual system | Treatment | 92014 |
222 | More often than most peers in Optometry |
| Established patient problem focused exam of visual system | Treatment | 92012 |
66 | As often as other peers in Optometry |
| Imaging of optic nerve | Treatment | 92133 |
58 | More often than most peers in Optometry |
| Exam of visual field with extended testing | Treatment | 92083 |
31 | As often as other peers in Optometry |
| New patient complete exam of visual system | Treatment | 92004 |
31 | As often as other peers in Optometry |
| Imaging of retina | Treatment | 92134 |
16 | Less often than most 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 |
83 | 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 |
51 | 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.
Also at this address 4
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 Encinitas 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 2021 at Other 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 Dr. Cao-Nguyen specialize in?
Dr. Cao-Nguyen is an optometry in Encinitas, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. Cao-Nguyen located?
Dr. Cao-Nguyen is listed at 477 N El Camino Real Ste C202, Encinitas, CA 92024. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Cao-Nguyen's phone number?
The number on file is (760) 631-3500. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Cao-Nguyen?
Dr. Cao-Nguyen's National Provider Identifier is 1477121713. 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. Cao-Nguyen go to medical school?
Dr. Cao-Nguyen attended Other, graduating in 2021. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Cao-Nguyen have?
Dr. Cao-Nguyen has 5 years experience. Calculated from a graduation year of 2021, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Cao-Nguyen do most often?
According to Medicare billing data, Dr. Cao-Nguyen 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
Is Dr. Cao-Nguyen's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Cao-Nguyen. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.