Physician Profile
Unclaimed ProfileAbout PREPAS
Stephen B Prepas, M.D. is a healthcare provider in Irvine, CA specialising in ophthalmology. Stephen trained at University of California, Irvine, California College of Medicine, graduating in 1975. Stephen is also listed as specialising in ophthalmology — pediatric.
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. Prepas specialise in?
Dr. Prepas is an ophthalmology in Irvine, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “OPHTHALMOLOGY”.
NPI registry
Where is Dr. Prepas located?
Dr. Prepas is listed at 850 HEALTH SCIENCES RD, Irvine, CA 92617. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Prepas's phone number?
The number on file is (949) 824-2020. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Prepas's NPI number?
Dr. Prepas's National Provider Identifier is 1023103660. 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. Prepas go to medical school?
Dr. Prepas attended University of California, Irvine, California College of Medicine, graduating in 1975. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Prepas been practising?
Dr. Prepas has 51 years experience. Calculated from a graduation year of 1975, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Prepas do most often?
According to Medicare billing data, Dr. Prepas provides treatments such as 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. Prepas confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Prepas. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (949) 824-2020
- Email not available
Practice Locations
850 HEALTH SCIENCES RD
Irvine, CA 92617
Procedures Most Often Billed to Medicare
62 services · 54 patients · 3 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Imaging of retina | Treatment | 92134 |
13 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
31 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
18 |
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 Irvine 3
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at University of California, Irvine, California College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1975 at University of California, Irvine, California College of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Imaging of retina 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.