Physician Profile
Unclaimed ProfileAbout MARSHBURN
Based in Placentia, CA, John S Marshburn, M.D. is listed in the NPI registry under ophthalmology. John graduated from Tulane University School of Medicine in 1993. According to Medicare claims data, John cared for 3,699 Medicare patients across 6,474 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
- (714) 792-1199
- Email not available
Practice Locations
1275 N ROSE DR SUITE 112
Placentia, CA 92870
Procedures Most Often Billed to Medicare
6,474 services · 3,699 patients · 14 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of cataract with insertion of prosthetic lens | Procedure | 66984 |
77 |
| Removal of recurring cataract in lens capsule using a laser | Procedure | 66821 |
31 |
| Ultrasound scan to determine eye length and lens power | Imaging | 76519 |
116 |
| Ultrasound scan of cornea to determine thickness | Imaging | 76514 |
104 |
| Established patient complete exam of visual system | Treatment | 92014 |
1,301 |
| Photography of the retina | Treatment | 92250 |
1,241 |
| Imaging of optic nerve | Treatment | 92133 |
1,137 |
| Exam of visual field with extended testing | Treatment | 92083 |
823 |
| Established patient problem focused exam of visual system | Treatment | 92012 |
764 |
| Imaging of retina | Treatment | 92134 |
616 |
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 ophthalmology specialists in Placentia 3
Same specialty, same city.
Trained at Tulane University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1993 at Tulane University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of cataract with insertion of prosthetic lens 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Marshburn?
Dr. Marshburn is an ophthalmology in Placentia, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “OPHTHALMOLOGY”.
NPI registry
What is Dr. Marshburn's address?
Dr. Marshburn is listed at 1275 N ROSE DR SUITE 112, Placentia, CA 92870. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Marshburn?
The number on file is (714) 792-1199. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Marshburn's NPI number?
Dr. Marshburn's National Provider Identifier is 1245246164. 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. Marshburn train?
Dr. Marshburn attended Tulane University School of Medicine, graduating in 1993. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Marshburn been practicing?
Dr. Marshburn has 33 years experience. Calculated from a graduation year of 1993, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Marshburn perform?
According to Medicare billing data, Dr. Marshburn performs procedures including removal of cataract with insertion of prosthetic lens and removal of recurring cataract in lens capsule using a laser; reads or performs imaging such as ultrasound scan to determine eye length and lens power and ultrasound scan of cornea to determine thickness; provides treatments such as established patient complete exam of visual system and photography of the retina, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Marshburn confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Marshburn. If this is you, claiming it is free.
Guide.md
Is this your profile?
Verify your identity to control how patients — and AI assistants — describe you.
Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.