Physician Profile
Gregory Persak, M.D.
Unclaimed ProfileAbout Dr. Persak
Gregory Persak, M.D. practices ophthalmology in West Islip, NY. Gregory is a 1981 graduate of Boston University School of Medicine. Medicare claims data shows Gregory provided 4,615 services to 3,953 patients.
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
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (631) 422-1110
- Email not available
Practice Locations
360 MONTAUK HWY
West Islip, NY 11795
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
Procedures & services
Most searched procedures
Procedures Most Often Billed to Medicare
4,615 services · 3,953 patients · 22 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of cataract with insertion of prosthetic lens | Procedure | 66984 |
277 |
| Removal of recurring cataract in lens capsule using a laser | Procedure | 66821 |
87 |
| Closure of tear duct opening using plug | Procedure | 68761 |
33 |
| Laser repair to improve eye fluid flow | Procedure | 65855 |
18 |
| Complex removal of cataract with insertion of prosthetic lens | Procedure | 66982 |
14 |
| Removal of eyelashes using forceps | Procedure | 67820 |
13 |
| Ultrasound scan to determine eye length and lens power | Imaging | 76519 |
18 |
| Ultrasound scan of cornea to determine thickness | Imaging | 76514 |
14 |
| Established patient complete exam of visual system | Treatment | 92014 |
1,189 |
| Photography of the retina | Treatment | 92250 |
859 |
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 ophthalmology specialists at this location 5
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.
Trained at Boston 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 1981 at Boston 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 NY who bill this service to Medicare most often.
Common questions
What does Dr. Persak specialize in?
Dr. Persak is an ophthalmology in West Islip, NY. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “OPHTHALMOLOGY”.
NPI registry
Where is Dr. Persak located?
Dr. Persak is listed at 360 MONTAUK HWY, West Islip, NY 11795. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Persak's phone number?
The number on file is (631) 422-1110. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Persak?
Dr. Persak's National Provider Identifier is 1952372245. 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. Persak go to medical school?
Dr. Persak attended Boston University School of Medicine, graduating in 1981. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Persak have?
Dr. Persak has 45 years experience. Calculated from a graduation year of 1981, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Persak do most often?
According to Medicare billing data, Dr. Persak performs procedures including removal of cataract with insertion of prosthetic lens, removal of recurring cataract in lens capsule using a laser and closure of tear duct opening using plug; 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
Is Dr. Persak's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Persak. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.