Physician Profile
Unclaimed ProfileAbout 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.
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
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (408) 279-4664
- Email not available
Practice Locations
123 DI SALVO AVE SUITE 20
San Jose, CA 95128
Procedures Most Often Billed to Medicare
1,175 services · 921 patients · 9 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient complete exam of visual system | Treatment | 92014 |
350 |
| Imaging of retina | Treatment | 92134 |
245 |
| Imaging of optic nerve | Treatment | 92133 |
116 |
| Exam of the internal drainage system of eye | Treatment | 92020 |
111 |
| Exam of visual field with extended testing | Treatment | 92083 |
88 |
| Photography of the retina | Treatment | 92250 |
43 |
| New patient complete exam of visual system | Treatment | 92004 |
43 |
| Established patient problem focused exam of visual system | Treatment | 92012 |
20 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
159 |
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 ophthalmology specialists 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 ophthalmology specialists 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 Dr. Decker's specialty?
Dr. Decker is an ophthalmology in San Jose, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “OPHTHALMOLOGY”.
NPI registry
Where can I find Dr. Decker?
Dr. 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 Dr. Decker?
The number on file is (408) 279-4664. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Decker's NPI number?
Dr. 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 Dr. Decker's medical education?
Dr. Decker attended Other, graduating in 1962. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Decker been practicing?
Dr. Decker has 64 years experience. Calculated from a graduation year of 1962, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Decker known for?
According to Medicare billing data, Dr. 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 Dr. Decker confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Decker. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.