Doctor profile · Federal record
Dr. Gregory Doren, M.D.
Ophthalmology Physician (CMS: Ophthalmology) · Chicago, IL
- NPI 1851411847
- Accepts Medicare
- 41 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3000 N Halsted St, Suite 501
Chicago, IL 606575188
(773) 935-2800
fax (773) 935-2861
Credentials & registration
- NPI registered
- March 2007 — 19 yrs on file
- Profile last updated
- December 29, 2021
- Year of graduation
- 1985 — 41 yrs since
- Specialty taxonomy
- 207W00000X — NUCC code
- State license (1)
- Illinois #036079629
- Medicaid
- IL #036079629
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1851411847. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,559
Distinct HCPCS
10
Medicare allowed
$248,496
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
92014 |
Established patient complete exam of visual system | 875 | 521 | $130 | |
92134 |
Imaging of retina | 417 | 306 | $41 | |
92083 |
Exam of visual field with extended testing | 306 | 224 | $64 | |
92133 |
Imaging of optic nerve | 176 | 172 | $35 | |
92250 |
Photography of the retina | 146 | 145 | $37 | |
92020 |
Exam of the internal drainage system of eye | 112 | 105 | $28 | |
76519 |
Ultrasound scan to determine eye length and lens power | 106 | 90 | $56 | |
92004 |
New patient complete exam of visual system | 96 | 96 | $153 | |
92285 |
Photography of content of eyes | 63 | 58 | $22 | |
92082 |
Exam of visual field with intermediate testing | 57 | 47 | $48 |
In context: peer comparison
Among 73 peers in Chicago Ophthalmology Physician, average services per provider: 211. This provider delivers 12× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
2,019
Patients
839
Total drug cost
$118,111
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Latanoprost | Generic | 680 | 190 | $22,653 |
| Prednisolone Acetate | Generic | 235 | 132 | $10,635 |
| Dorzolamide Hcl | Generic | 210 | 50 | $5,964 |
| Erythromycin (Erythromycin Base) | Brand | 165 | 132 | $1,941 |
| Timolol Maleate | Generic | 162 | 51 | $5,715 |
| Ketorolac Tromethamine | Generic | 129 | 62 | $3,480 |
| Ciprofloxacin Hcl | Generic | 110 | 79 | $1,401 |
| Brimonidine Tartrate | Generic | 92 | 29 | $5,882 |
| Tobramycin-Dexamethasone (Tobramycin/Dexamethasone) | Brand | 70 | 61 | $4,386 |
| Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) | Brand | 51 | 15 | $1,693 |
Frequently asked questions
What is Dr. Gregory Doren's medical specialty?
Dr. Gregory Doren practices Ophthalmology Physician in Chicago, IL.
Where does Dr. Gregory Doren practice?
Dr. Gregory Doren practices at 3000 N Halsted St, Chicago, IL 606575188. Office phone: 7739352800.
What is Dr. Gregory Doren's NPI?
Dr. Gregory Doren's National Provider Identifier (NPI) is 1851411847, issued by NPPES.
Does Dr. Gregory Doren accept Medicare assignment?
Yes. Dr. Gregory Doren accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gregory Doren commonly perform?
Top Medicare-reported procedures in 2023: Established patient complete exam of visual system (HCPCS 92014); Imaging of retina (HCPCS 92134); Exam of visual field with extended testing (HCPCS 92083). Source: CMS Medicare Physician & Other Practitioners file.