Are you Dr. Gaster? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 5901 E 7Th St, Long Beach, CA 90822
About Dr. Gaster
Ronald N. Gaster, MD practices ophthalmology in Long Beach, CA. Ronald is a 1973 graduate of University of California, Geffen School of Medicine. Medicare claims data shows Ronald provided 1,066 services to 599 patients. The services billed most often include established patient complete exam of visual system, ct scan of cornea, and ultrasound scan of cornea to determine thickness. The provider's National Provider Identifier (NPI) is 1306940325.
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
- (562) 826-8000
- Email not available
Practice Locations
5901 E 7TH ST
Long Beach, CA 90822
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
1,066 services · 599 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Ultrasound scan of cornea to determine thickness | Imaging | 76514 |
189 | More than most peers in Ophthalmology |
| Ultrasound scan to determine eye length and lens power | Imaging | 76519 |
179 | More often than most peers in Ophthalmology |
| Established patient complete exam of visual system | Treatment | 92014 |
273 | As often as other peers in Ophthalmology |
| Ct scan of cornea | Treatment | 92025 |
225 | More than most peers in Ophthalmology |
| Imaging of optic nerve | Treatment | 92133 |
93 | As often as other peers in Ophthalmology |
| Established patient problem focused exam of visual system | Treatment | 92012 |
65 | As often as other peers in Ophthalmology |
| New patient complete exam of visual system | Treatment | 92004 |
42 | 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.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
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 Long Beach 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at University of California, Geffen School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1973 at University of California, Geffen School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Ultrasound scan of cornea to determine thickness 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Dr. Gaster's specialty?
Dr. Gaster is an eye doctor in Long Beach, 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 Dr. Gaster?
Dr. Gaster is listed at 5901 E 7Th St, Long Beach, CA 90822. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Gaster?
The number on file is (562) 826-8000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Gaster?
Dr. Gaster's National Provider Identifier is 1306940325. 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. Gaster's medical education?
Dr. Gaster attended University of California, Geffen School of Medicine, graduating in 1973. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Gaster have?
Dr. Gaster has 53 years experience. Calculated from a graduation year of 1973, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Gaster known for?
According to Medicare billing data, Dr. Gaster performs imaging including ultrasound scan of cornea to determine thickness and ultrasound scan to determine eye length and lens power; provides treatments such as established patient complete exam of visual system and ct scan of cornea. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Gaster's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Gaster. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.