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Edit this profileAt a glance
- 222 E 41St St, New York, NY 10017
About Dr. Colby
Kathryn A. Colby, M.D. practices ophthalmology in New York, NY. Kathryn is also listed as specializing in ophthalmology — cornea & external disease. According to Medicare claims data, Kathryn cared for 97 Medicare patients across 129 services. The services billed most often include ultrasound scan of cornea to determine thickness, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and imaging of front third of eye using a special microscope. The provider's National Provider Identifier (NPI) is 1245221282.
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
- (212) 263-2574
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
222 E 41ST ST
New York, NY 10017
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
129 services · 97 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Ultrasound scan of cornea to determine thickness | Imaging | 76514 |
50 | More often than most peers in Ophthalmology |
| Imaging of front third of eye using a special microscope | Treatment | 92286 |
20 | Less often than most peers in Ophthalmology |
| Ct scan of cornea | Treatment | 92025 |
18 | Less often than most peers in Ophthalmology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
28 | Less often than most peers in Ophthalmology |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
13 | Less 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.
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 New York 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1992 at Other 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 NY who bill this service to Medicare most often.
Common questions
What kind of doctor is Kathryn A. Colby?
Kathryn A. Colby is an eye doctor in New York, NY. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
What is Kathryn A. Colby's address?
Kathryn A. Colby is listed at 222 E 41St St, New York, NY 10017. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Kathryn A. Colby?
The number on file is (212) 263-2574. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Kathryn A. Colby's NPI number?
Kathryn A. Colby's National Provider Identifier is 1245221282. 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 Kathryn A. Colby train?
Kathryn A. Colby attended Other, graduating in 1992. This comes from the CMS National Downloadable File.
CMS public data
How long has Kathryn A. Colby been practicing?
Kathryn A. Colby has 34 years experience. Calculated from a graduation year of 1992, reported in the CMS National Downloadable File.
CMS public data
What procedures does Kathryn A. Colby perform?
According to Medicare billing data, Kathryn A. Colby performs imaging including ultrasound scan of cornea to determine thickness; provides treatments such as imaging of front third of eye using a special microscope and ct scan of cornea, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Kathryn A. Colby confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Kathryn A. Colby. If this is you, claiming it is free.
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