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Edit this profileAt a glance
- 937 E Main St, C/O East End Eye A Division of Prohealth Care Associate, Riverhead, NY 11901
About Dr. Dinowitz
Marc Dinowitz, M.D. is a healthcare provider in Riverhead, NY specializing in ophthalmology. Marc trained at State University of New York at Stony Brook, School of Medicine, graduating in 1996. According to Medicare claims data, Marc cared for 3,868 Medicare patients across 4,711 services. The services billed most often include established patient complete exam of visual system, imaging of retina, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more. This provider record is associated with NPI 1578582466.
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
- (631) 369-0777
- Email not available
Practice Locations
937 E MAIN ST C/O EAST END EYE A DIVISION OF PROHEALTH CARE ASSOCIATE
Riverhead, NY 11901
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
4,711 services · 3,868 patients · 18 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of cataract with insertion of prosthetic lens | Procedure | 66984 |
291 | More often than most peers in Ophthalmology |
| Removal of recurring cataract in lens capsule using a laser | Procedure | 66821 |
154 | More than most peers in Ophthalmology |
| Complex removal of cataract with insertion of prosthetic lens | Procedure | 66982 |
15 | Less often than most peers in Ophthalmology |
| Ultrasound scan of cornea to determine thickness | Imaging | 76514 |
36 | As often as other peers in Ophthalmology |
| Established patient complete exam of visual system | Treatment | 92014 |
1,778 | More than most peers in Ophthalmology |
| Imaging of retina | Treatment | 92134 |
608 | More often than most peers in Ophthalmology |
| New patient complete exam of visual system | Treatment | 92004 |
343 | More than most peers in Ophthalmology |
| Measurement of corneal curvature and depth of eye | Treatment | 92136 |
312 | More often than most peers in Ophthalmology |
| Imaging of optic nerve | Treatment | 92133 |
159 | More often than most peers in Ophthalmology |
| Photography of the retina | Treatment | 92250 |
141 | More often than most 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.
Other eye doctors at this location 4
Same specialty, same street address — most likely the same department or group.
Also at this address 2
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 Riverhead 3
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at State University of New York at Stony Brook, School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1996 at State University of New York at Stony Brook, 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 NY who bill this service to Medicare most often.
Common questions
What does Marc Dinowitz specialize in?
Marc Dinowitz is an eye doctor in Riverhead, NY. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
Where is Marc Dinowitz located?
Marc Dinowitz is listed at 937 E Main St C/O East End Eye A Division of Prohealth Care Associate, Riverhead, NY 11901. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Marc Dinowitz's phone number?
The number on file is (631) 369-0777. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Marc Dinowitz's NPI number?
Marc Dinowitz's National Provider Identifier is 1578582466. 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 Marc Dinowitz train?
Marc Dinowitz attended State University of New York at Stony Brook, School of Medicine, graduating in 1996. This comes from the CMS National Downloadable File.
CMS public data
How long has Marc Dinowitz been practicing?
Marc Dinowitz has 30 years experience. Calculated from a graduation year of 1996, reported in the CMS National Downloadable File.
CMS public data
What does Marc Dinowitz do most often?
According to Medicare billing data, Marc Dinowitz performs procedures including removal of cataract with insertion of prosthetic lens, removal of recurring cataract in lens capsule using a laser and complex removal of cataract with insertion of prosthetic lens; reads or performs imaging such as ultrasound scan of cornea to determine thickness; 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 Marc Dinowitz confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Marc Dinowitz. If this is you, claiming it is free.
Guide.md
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