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Edit this profileAt a glance
- 2200 Whitney Ave, Suite 300, Hamden, CT 06518
About Dr. Haffner
Gregory Haffner, M.D. is a healthcare provider in Hamden, CT specializing in ophthalmology. According to Medicare claims data, Gregory cared for 2,133 Medicare patients across 13,421 services. The services billed most often include injection, faricimab-svoa, 0.1 mg, imaging of retina, and injection of drug into eye. This provider record is associated with NPI 1407886450.
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
- (203) 288-2020
- Email not available
Practice Locations
2200 WHITNEY AVE SUITE 300
Hamden, CT 06518
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
Eye injury and cancer
Inflammation, neurologic, and orbit
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
Retina & vitreous
Procedures & services
Cataract and lens
- Cataract surgery with lens implant
- Laser-assisted cataract surgery
- Intraocular lens exchange
- YAG laser capsulotomy
Cornea and refractive
Emergency and minor
- Corneal rust-ring removal
- Removal of an eye foreign body
- Repair of an eye or eyelid laceration
- Repair of ruptured globe
Examination and imaging
- Eye ultrasound
- Slit-lamp examination
- Visual-field testing
- Corneal topography
- Fluorescein angiography
Eyelid, tear duct, and muscle
- Chalazion removal
- Ectropion repair
- Eyelid surgery
- Tear-duct probing
- Drooping-eyelid repair
- Entropion repair
- Eye-muscle surgery
- Tear-duct bypass surgery
Glaucoma
- Cyclophotocoagulation
- Trabeculectomy
- Glaucoma drainage-device implantation
- Laser peripheral iridotomy
- Minimally invasive glaucoma surgery
- Selective laser trabeculoplasty
Retina
Most searched procedures
Corneal procedures
Eye diagnostics
Eye injuries
Eyelid surgery
Laser eye surgery
Laser procedures
Laser vision correction
Refractive surgery
Tear duct & Orbit
Procedures Most Often Billed to Medicare
13,421 services · 2,133 patients · 16 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Injection of drug into eye | Procedure | 67028 |
1,189 | More often than most peers in Ophthalmology |
| 2d ultrasound scan of eye tissue and structures | Imaging | 76512 |
24 | As often as other peers in Ophthalmology |
| Imaging of retina | Treatment | 92134 |
1,823 | More than most peers in Ophthalmology |
| Established patient complete exam of visual system | Treatment | 92014 |
410 | As often as other peers in Ophthalmology |
| Established patient problem focused exam of visual system | Treatment | 92012 |
181 | As often as other peers in Ophthalmology |
| Exam of retinal blood vessels using a special camera after injection of a dye | Treatment | 92235 |
33 | As often as other peers in Ophthalmology |
| Photography of the retina | Treatment | 92250 |
32 | Less often than most peers in Ophthalmology |
| Injection, faricimab-svoa, 0.1 mg | Drug given | J2777 |
7,320 | As often as other peers in Ophthalmology |
| Injection, aflibercept, 1 mg | Drug given | J0178 |
870 | More often than most peers in Ophthalmology |
| Injection, bevacizumab, 10 mg | Drug given | J9035 |
694 | More 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 1
Same specialty, same street address — most likely the same department or group.
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.
More connections — 30 related providers in 4 groups
Other eye doctors in Hamden 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2001 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Injection of drug into eye 7
Providers in CT who bill this service to Medicare most often.
Common questions
What does Gregory Haffner specialize in?
Gregory Haffner is an eye doctor in Hamden, CT. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
Where is Gregory Haffner located?
Gregory Haffner is listed at 2200 Whitney Ave Suite 300, Hamden, CT 06518. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Gregory Haffner's phone number?
The number on file is (203) 288-2020. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Gregory Haffner's NPI number?
Gregory Haffner's National Provider Identifier is 1407886450. 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 Gregory Haffner train?
Gregory Haffner attended Other, graduating in 2001. This comes from the CMS National Downloadable File.
CMS public data
How long has Gregory Haffner been practicing?
Gregory Haffner has 25 years experience. Calculated from a graduation year of 2001, reported in the CMS National Downloadable File.
CMS public data
What does Gregory Haffner do most often?
According to Medicare billing data, Gregory Haffner performs procedures including injection of drug into eye; reads or performs imaging such as 2d ultrasound scan of eye tissue and structures; provides treatments such as imaging of retina and established patient complete exam of visual system, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Gregory Haffner confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Gregory Haffner. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.