Physician Profile
Unclaimed ProfileAbout CORWIN
Joel Michael Corwin, M.D. practises ophthalmology in Ventura, CA. Joel is a 1978 graduate of Warren Alpert Medical School of Brown University.
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. Corwin specialise in?
Dr. Corwin is an ophthalmology in Ventura, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “OPHTHALMOLOGY”.
NPI registry
Where is Dr. Corwin located?
Dr. Corwin is listed at 3085 LOMA VISTA RD, Ventura, CA 93003. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Corwin's phone number?
The number on file is (805) 648-3085. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Corwin?
Dr. Corwin's National Provider Identifier is 1518901651. 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. Corwin go to medical school?
Dr. Corwin attended Warren Alpert Medical School of Brown University, graduating in 1978. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Corwin have?
Dr. Corwin has 48 years experience. Calculated from a graduation year of 1978, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Corwin do most often?
According to Medicare billing data, Dr. Corwin performs procedures including injection of drug into eye; 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. Corwin's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Corwin. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (805) 648-3085
- Email not available
Practice Locations
3085 LOMA VISTA RD
Ventura, CA 93003
Procedures Most Often Billed to Medicare
10,394 services · 3,949 patients · 12 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Injection of drug into eye | Procedure | 67028 |
1,708 |
| Photography of the retina | Treatment | 92250 |
2,624 |
| Established patient complete exam of visual system | Treatment | 92014 |
1,098 |
| Imaging of retina | Treatment | 92134 |
512 |
| Established patient problem focused exam of visual system | Treatment | 92012 |
361 |
| Exam of retinal blood vessels using a special camera after injection of a dye | Treatment | 92235 |
196 |
| New patient complete exam of visual system | Treatment | 92004 |
51 |
| Imaging of optic nerve | Treatment | 92133 |
18 |
| Exam of visual field with extended testing | Treatment | 92083 |
12 |
| Compounded drug, not otherwise classified | Drug given | J7999 |
1,380 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated 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 8
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 Ventura 5
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at Warren Alpert Medical School of Brown University 8
Other providers in the same specialty who trained at the same institution.
Class of 1978 at Warren Alpert Medical School of Brown University 7
Providers who graduated from the same medical school in the same year.
Also performs Injection of drug into eye 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.