Are you Gregory J. Katz, M.D.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 5477 W Clark Rd, Ypsilanti, MI 48197
About Dr. Katz
Based in Ypsilanti, MI, Gregory J. Katz, M.D. is listed in the NPI registry under ophthalmology. According to Medicare claims data, Gregory cared for 2,867 Medicare patients across 3,541 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, photography of the retina, and established patient complete exam of visual system. NPI 1952364994 identifies this record in the national registry.
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
- (734) 434-6000
- Email not available
Practice Locations
5477 W CLARK RD
Ypsilanti, MI 48197
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
3,541 services · 2,867 patients · 17 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of cataract with insertion of prosthetic lens | Procedure | 66984 |
50 | Less often than most peers in Ophthalmology |
| Removal of recurring cataract in lens capsule using a laser | Procedure | 66821 |
45 | As often as other peers in Ophthalmology |
| Closure of tear duct opening using plug | Procedure | 68761 |
16 | Less often than most peers in Ophthalmology |
| Ultrasound scan of cornea to determine thickness | Imaging | 76514 |
14 | Less often than most peers in Ophthalmology |
| Photography of the retina | Treatment | 92250 |
575 | More than most peers in Ophthalmology |
| Established patient complete exam of visual system | Treatment | 92014 |
527 | More often than most peers in Ophthalmology |
| Exam of the internal drainage system of eye | Treatment | 92020 |
345 | More than most peers in Ophthalmology |
| Exam of visual field with extended testing | Treatment | 92083 |
338 | More often than most peers in Ophthalmology |
| Imaging of optic nerve | Treatment | 92133 |
312 | More often than most peers in Ophthalmology |
| Imaging of retina | Treatment | 92134 |
195 | 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.
Other eye doctors at this location 4
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 — 29 related providers in 4 groups
Other eye doctors in Ypsilanti 5
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1989 at Other 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 MI who bill this service to Medicare most often.
Common questions
What does Gregory J. Katz specialize in?
Gregory J. Katz is an eye doctor in Ypsilanti, MI. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
Where is Gregory J. Katz located?
Gregory J. Katz is listed at 5477 W Clark Rd, Ypsilanti, MI 48197. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Gregory J. Katz's phone number?
The number on file is (734) 434-6000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Gregory J. Katz's NPI number?
Gregory J. Katz's National Provider Identifier is 1952364994. 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 J. Katz train?
Gregory J. Katz attended Other, graduating in 1989. This comes from the CMS National Downloadable File.
CMS public data
How long has Gregory J. Katz been practicing?
Gregory J. Katz has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
What does Gregory J. Katz do most often?
According to Medicare billing data, Gregory J. Katz 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 of cornea to determine thickness; provides treatments such as photography of the 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 J. Katz confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Gregory J. Katz. If this is you, claiming it is free.
Guide.md
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