DR. GREGORY S. DOREN M.D.
NPI 1851411847
Ophthalmology in Chicago, IL

Q: What is Gregory Doren's NPI number?

The NPI number for Gregory Doren is 1851411847. It was assigned to this individual provider in the NPPES registry on March 31, 2007.

Q: What is Gregory Doren's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Doren was last updated on December 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since March 31, 2007PECOS EnrolledAccepts Medicare Assignment

3000 N HALSTED ST, SUITE 501, CHICAGO, IL 60657(773) 935-2800(773) 935-2861 Get Directions Write a Review

NPPES record last updated: December 29, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Gregory S. Doren M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GREGORY S. DOREN M.D. (NPI 1851411847) is an individual ophthalmology provider in Chicago, Illinois, licensed in Illinois (036079629) and active in the NPI registry since March 2007. He is enrolled in Medicare PECOS, is affiliated with Advocate Illinois Masonic Medical Center, and is a graduate of University Of Michigan Medical School (1985).

NPPES Registry Identity

NPI1851411847

Entity TypeIndividualMale

Primary Taxonomy207W00000X

Provider Legal NameDR. GREGORY S. DORENCredential: M.D.

Location Address3000 N HALSTED ST, SUITE 501Chicago, IL 60657-5188

Mailing Address3000 N Halsted St, Suite 501Chicago, IL 60657-5188 · (773) 935-2800 · Fax (773) 935-2861

Phone(773) 935-2800

Fax(773) 935-2861

Sole ProprietorNo

Medical School CMSUniversity Of Michigan Medical SchoolGraduated 1985

Enumeration DateMarch 31, 2007

Last NPPES UpdateDecember 29, 2021

NPPES CertifiedDecember 29, 2021

✔ NPI 1851411847 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

License✔ Licensed in IL · 036079629

Definition

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

3000 N HALSTED ST, Chicago, IL 60657

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Other Identifiers 1

Medicaid036079629IL

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Gregory S. Doren M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8921022187

PECOS Enrollment IDI20060118000193

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 18

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient complete exam of visual system 92014

An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.

947 services528 patients

Imaging of retina 92134

Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.

362 services276 patients

Exam of visual field with extended testing 92083

An extended visual field exam is a detailed test to evaluate your peripheral (side) vision. It helps to detect any potential blind spots which may not be noticeable in daily life. These could be caused by eye diseases like glaucoma, or neurological conditions.

305 services230 patients

Photography of the retina 92250

Photography of the retina, also known as retinal imaging, is a non-invasive procedure that captures images of the back of your eye. This helps doctors identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. It's painless and quick, often part of a routine eye exam.

303 services297 patients

Exam of the internal drainage system of eye 92020

This is a procedure where your doctor examines the eye's internal drainage system, essential for maintaining eye pressure. They use specialized tools to check for blockages or damage that might lead to conditions like glaucoma. It's non-invasive and painless.

213 services192 patients

Imaging of optic nerve 92133

Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).

171 services158 patients

Ultrasound scan to determine eye length and lens power 76519

An ultrasound scan for the eye is a safe, non-invasive procedure. It uses sound waves to create images of your eye's structure. This helps determine the length of your eye and the power of your lens, which is crucial for diagnosing eye conditions and planning surgeries.

87 services72 patients

New patient complete exam of visual system 92004

A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.

80 services80 patients

Photography of content of eyes 92285

Photography of the content of eyes, also known as ocular photography, captures detailed images of different parts of the eye. It helps identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. The process is non-invasive and painless.

72 services63 patients

Exam of visual field with intermediate testing 92082

An exam of the visual field with intermediate testing is a procedure that checks your peripheral (side) vision. It helps to identify blind spots which could be a sign of eye diseases. This non-invasive test is painless and quick.

71 services54 patients

Removal of cataract with insertion of prosthetic lens 66984

This is a procedure where a cloudy lens in your eye, known as a cataract, is removed. After removal, a clear artificial lens is inserted. This helps to restore your vision, enabling you to see clearly again.

50 services34 patients

Removal of recurring cataract in lens capsule using a laser 66821

This procedure, known as YAG laser capsulotomy, treats cloudiness in the lens capsule following cataract surgery. A laser is used to create a small hole in the cloudy capsule, allowing light to pass through and restore clear vision. It's a quick, painless procedure.

46 services36 patients

Creation of eye fluid drainage tracts in iris using a laser, per session 66761

This procedure uses a laser to create small drainage tracts in the iris, the colored part of your eye. This helps excess fluid escape, reducing pressure in the eye that can cause glaucoma. It's performed in sessions.

33 services17 patients

Ultrasound scan of cornea to determine thickness 76514

An ultrasound scan of the cornea is a non-invasive procedure that uses sound waves to measure the thickness of your cornea. This helps in diagnosing certain eye conditions and planning treatments. No discomfort or pain is typically experienced.

30 services30 patients

Complex removal of cataract with insertion of prosthetic lens 66982

This procedure involves removing a cloudy lens (cataract) from your eye and replacing it with a clear, artificial lens. It helps restore vision that has been affected by the cataract. The operation is usually done under local anesthesia.

26 services21 patients

Established patient problem focused exam of visual system 92012

This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.

25 services23 patients

Closure of tear duct opening using plug 68761

Closure of the tear duct opening using a plug is a procedure to address excessive tear production. A small device is inserted into the tear duct to block it, reducing tear flow and relieving symptoms. This is a safe, reversible process, often performed in-office.

23 services11 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

13 services11 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Advocate Illinois Masonic Medical Center

Acute Care Hospitals · Chicago, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140182

Location836 West Wellington AvenueChicago, IL 60657 · Cook County

Emergency services Birthing friendly

Presence Saint Joseph Hospital - Chicago

Acute Care Hospitals · Chicago, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140224

Location2900 North Lake Shore DriveChicago, IL 60657 · Cook County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60657 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$138.86 typical visit price

range $60.08 – $183.39

Typical copayment $34.71 (range $15.02 – $45.84)

Most-billed visit code 99204

Established Patient

$74.80 typical visit price

range $18.97 – $148.12

Typical copayment $18.70 (range $4.74 – $37.03)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ADAJAR SURGICAL, S.C.

Surgery

3000 N HALSTED ST, SUITE 500
CHICAGO, IL 60657

Cook County (773) 310-3316

AMANDA ALLRED MS, GC

Genetic Counselor, MS

3000 N HALSTED ST
CHICAGO, IL 60657

Cook County (773) 296-6666

MARK PIETZ D.P.M.

Podiatrist

3000 N HALSTED ST, SUITE 821
CHICAGO, IL 60657

Cook County (773) 296-7160

LEVINE GYNECOLOGY OF CHICAGO, S.C.

Obstetrics & Gynecology (Gynecology)

3000 N HALSTED ST, SUITE 625
CHICAGO, IL 60657

Cook County (773) 296-3450

PAUL BERNARD RINGEL M.D.

Internal Medicine

3000 N HALSTED ST, SUITE 509
CHICAGO, IL 60657

Cook County (773) 296-5090

WHITNEY FRITZIE PA

Physician Assistant

3000 N HALSTED ST, SUITE 320
CHICAGO, IL 60657

Cook County (773) 296-3636

DR. SILVIA BICALHO M.D.

Obstetrics & Gynecology

3000 N HALSTED ST
CHICAGO, IL 60657

Cook County (773) 296-3300

CHICAGO ANESTHESIOLOGY PAIN SPECIALISTS LLC

Anesthesiology (Pain Medicine)

3000 N HALSTED ST
CHICAGO, IL 60657

Cook County (773) 296-7937

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gregory Doren's NPI number?

The NPI number for Gregory Doren is 1851411847. It was assigned to this individual provider in the NPPES registry on March 31, 2007.

Where is Gregory Doren located?

Gregory Doren practices at 3000 N Halsted St Suite 501, Chicago, IL 60657. The listed phone number is (773) 935-2800.

What is Gregory Doren's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Gregory Doren enrolled in Medicare?

Yes. Gregory Doren is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Gregory Doren affiliated with any hospitals?

According to CMS data, Gregory Doren is affiliated with Advocate Illinois Masonic Medical Center and Presence Saint Joseph Hospital - Chicago.

When was this NPI record last updated?

The NPPES record for Gregory Doren was last updated on December 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.