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Edit this profileAt a glance
- 123 Di Salvo Ave, Suite 20, San Jose, CA 95128
About Dr. Decker
Joseph Decker, M.D. practices ophthalmology in San Jose, CA. According to Medicare claims data, Joseph cared for 921 Medicare patients across 1,175 services. The services billed most often include established patient complete exam of visual system, imaging of retina, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. The provider's National Provider Identifier (NPI) is 1871546010.
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
- (408) 279-4664
- Email not available
Practice Locations
123 DI SALVO AVE SUITE 20
San Jose, CA 95128
Conditions Commonly Evaluated or Treated
Within Ophthalmology 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
Cornea and external eye
Eyelid and tear drainage
Refractive and focusing
- Astigmatism
- Eye misalignment (strabismus)
- Farsightedness
- Lazy eye (amblyopia)
- Nearsightedness
- Presbyopia
Retina and vitreous
Eye injuries
Inflammation, neurologic, and orbit
Retina & vitreous
Procedures & services
Most searched procedures
Examination and imaging
Cataract and lens
Corneal procedures
Eye diagnostics
Eye injuries
Eyelid surgery
Eyelid, tear duct, and muscle
Glaucoma
- Glaucoma drainage-device implantation
- Laser peripheral iridotomy
- Minimally invasive glaucoma surgery
- Selective laser trabeculoplasty
Laser eye surgery
Laser procedures
Laser vision correction
Refractive surgery
Tear duct & Orbit
Procedures Most Often Billed to Medicare
1,175 services · 921 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient complete exam of visual system | Treatment | 92014 |
350 | As often as other peers in Ophthalmology |
| Imaging of retina | Treatment | 92134 |
245 | More often than most peers in Ophthalmology |
| Imaging of optic nerve | Treatment | 92133 |
116 | As often as other peers in Ophthalmology |
| Exam of the internal drainage system of eye | Treatment | 92020 |
111 | More often than most peers in Ophthalmology |
| Exam of visual field with extended testing | Treatment | 92083 |
88 | As often as other peers in Ophthalmology |
| Photography of the retina | Treatment | 92250 |
43 | Less often than most peers in Ophthalmology |
| New patient complete exam of visual system | Treatment | 92004 |
43 | As often as other peers in Ophthalmology |
| Established patient problem focused exam of visual system | Treatment | 92012 |
20 | Less often than most peers in Ophthalmology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
159 | As often as other peers in Ophthalmology |
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 eye doctors at this location 1
Same specialty, same street address — most likely the same department or group.
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 eye doctors in San Jose 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1962 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Established patient complete exam of visual system 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Joseph Decker's specialty?
Joseph Decker is an eye doctor in San Jose, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
Where can I find Joseph Decker?
Joseph Decker is listed at 123 Di Salvo Ave Suite 20, San Jose, CA 95128. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Joseph Decker?
The number on file is (408) 279-4664. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Joseph Decker's NPI number?
Joseph Decker's National Provider Identifier is 1871546010. 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
What is Joseph Decker's education?
Joseph Decker attended Other, graduating in 1962. This comes from the CMS National Downloadable File.
CMS public data
How long has Joseph Decker been practicing?
Joseph Decker has 64 years experience. Calculated from a graduation year of 1962, reported in the CMS National Downloadable File.
CMS public data
What is Joseph Decker known for?
According to Medicare billing data, Joseph Decker provides treatments such as established patient complete exam of visual system and imaging of retina, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Joseph Decker confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Joseph Decker. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.