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Edit this profileAt a glance
- 3000 N Halsted St, Suite 501, Chicago, IL 60657
About Dr. Doren
Based in Chicago, IL, Gregory S. Doren, M.D. is listed in the NPI registry under ophthalmology. Gregory graduated from University of Michigan Medical School in 1985. Medicare claims data shows Gregory provided 2,857 services to 2,133 patients. The services billed most often include established patient complete exam of visual system, imaging of retina, and exam of visual field with extended testing. NPI 1851411847 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
- (773) 935-2800
- Email not available
Practice Locations
3000 N HALSTED ST SUITE 501
Chicago, IL 60657
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
2,857 services · 2,133 patients · 18 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 |
46 | As often as other peers in Ophthalmology |
| Creation of eye fluid drainage tracts in iris using a laser, per session | Procedure | 66761 |
33 | More often than most peers in Ophthalmology |
| Complex removal of cataract with insertion of prosthetic lens | Procedure | 66982 |
26 | As often as other peers in Ophthalmology |
| Closure of tear duct opening using plug | Procedure | 68761 |
23 | Less often than most peers in Ophthalmology |
| Ultrasound scan to determine eye length and lens power | Imaging | 76519 |
87 | More often than most peers in Ophthalmology |
| Ultrasound scan of cornea to determine thickness | Imaging | 76514 |
30 | As often as other peers in Ophthalmology |
| Established patient complete exam of visual system | Treatment | 92014 |
947 | More often than most peers in Ophthalmology |
| Imaging of retina | Treatment | 92134 |
362 | More often than most peers in Ophthalmology |
| Exam of visual field with extended testing | Treatment | 92083 |
305 | 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.
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.
Other eye doctors in Chicago 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at University of Michigan Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 1985 at University of Michigan Medical School 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 IL who bill this service to Medicare most often.
Common questions
What does Gregory S. Doren specialize in?
Gregory S. Doren is an eye doctor in Chicago, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
Where is Gregory S. Doren located?
Gregory S. Doren is listed at 3000 N Halsted St Suite 501, Chicago, IL 60657. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Gregory S. Doren's phone number?
The number on file is (773) 935-2800. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Gregory S. Doren?
Gregory S. Doren's National Provider Identifier is 1851411847. 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 S. Doren train?
Gregory S. Doren attended University of Michigan Medical School, graduating in 1985. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Gregory S. Doren have?
Gregory S. Doren has 41 years experience. Calculated from a graduation year of 1985, reported in the CMS National Downloadable File.
CMS public data
What does Gregory S. Doren do most often?
According to Medicare billing data, Gregory S. Doren performs procedures including removal of cataract with insertion of prosthetic lens, removal of recurring cataract in lens capsule using a laser and creation of eye fluid drainage tracts in iris using a laser, per session; 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 imaging of retina, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Gregory S. Doren's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Gregory S. Doren. If this is you, claiming it is free.
Guide.md
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