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Dr. Haroon O Ismail , MD

Ophthalmology β€’ Chicago, IL

Active NPI 1558947598 Individual Practitioner Male Practitioner Accepts Medicare assignment
Practice location in NPPES

420 E Superior St Ste 9-900
Chicago, IL 606114494

Call 3125037975 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

420 E Superior St Ste 9-900

Chicago, IL 606114494

Telephone 3125037975
Organization at the Same NPPES Address or Phone
Mcgaw Medical Center Of Northwestern University Facility NPI 1043630098

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

NPPES lists 1 additional practice-address record in Chicago, IL. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

CMS Doctors and Clinicians lists 1 group name: Northwestern Medical Faculty Foundation. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

Howard University College Of Medicine

Graduation Year

2021

30-day fills

14 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$457 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $20.73 in 2025

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2025.

Guide: How to read an Open Payments record

Years since graduation

5 years (graduated 2021)

CMS Doctors and Clinicians data list 2021 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2021

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, β€œDoes your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Ismail has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Ismail as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Chicago and Illinois

Billing and prescribing volume is not a quality rating.

Medicare Part D prescriptions

Fewer Part D prescriptions than 95% of clinicians listed under Ophthalmology in Chicago, IL (2024, 180 clinicians with data). Median for this group: 387. Middle half: 133 to 1,297.

Fewer Part D prescriptions than 95% of clinicians listed under Ophthalmology in Illinois (2024, 570 clinicians with data). Median for this group: 891. Middle half: 294 to 1,971.

Part D drug cost

A lower Part D drug cost than 90% of clinicians listed under Ophthalmology in Chicago, IL (2024, 180 clinicians with data). Median for this group: $21,351. Middle half: $3,118 to $119,759.

A lower Part D drug cost than 95% of clinicians listed under Ophthalmology in Illinois (2024, 570 clinicians with data). Median for this group: $71,776. Middle half: $10,407 to $185,387.

309 active clinicians are listed under Ophthalmology with a practice address in Chicago, IL (898 in Illinois).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Chicago

1.3% of these 309 clinicians have the CMS telehealth indicator.

53.1% of these 309 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo Β· Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments Β· Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $20.73.

Manufacturer Payment Nature Product Type Amount ($)
Glaukos Corporation
Food and Beverage
Cash or cash equivalent
iStent infinite General $20.73

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D Β· Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Prednisolone Acetate Prednisolone Acetate 13 345 $457.30 β€”

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2025-04-28
Ophthalmology Primary Specialty

NUCC Taxonomy Code: 207W00000X

License # reported to NPPES IL 125.078470

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.

Ophthalmology

NUCC Taxonomy Code: 207W00000X

License # reported to NPPES IL 036173232

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.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Illinois Department of Financial and Professional Regulation.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - OPHTHALMOLOGY

Medicare Enrollment ID

I20250502001611

Enrollment State Jurisdiction

IL

PECOS Control ID

4789085887

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Northwestern Medical Faculty Foundation

259 E Erie, Chicago, IL 606112987

Phone: 3126958150

Secondary Practice Locations

259 E Erie St Ste 1520

Chicago, IL 606113111

Phone: 3126958150

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

3 listed
NPI 1023436953

Doctor of Medicine (M.D.)

NPI 1023630399

Doctor of Osteopathic Medicine (D.O.), Master of Science

Michael Yarrington

Internal Medicine - Infectious Disease

NPI 1013334952

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

9 Historical Events
πŸ‘€
Provider Name / Credentials Updated April 28, 2025

Recorded as HAROON ISMAIL, MD

πŸ“
Updated Business Mailing Address June 19, 2021

Registered at 251 E HURON ST, CHICAGO, IL 606112908 (Tel: 3125037975)

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) June 19, 2021

Ophthalmology (license number reported to NPPES: IL 125.078470)

βœ…
NPI Profile Active March 21, 2021

NPI status registered as active in NPPES database

πŸ“
Practice Location (Initial Record) March 21, 2021

Registered at 420 E SUPERIOR ST STE 9-900, CHICAGO, IL 606114494 (Tel: 3125037975)

πŸ“
Business Mailing Address (Initial Record) March 21, 2021

Registered at 420 E SUPERIOR ST STE 9-900, CHICAGO, IL 606114494 (Tel: 3125037975)

πŸ‘€
Provider Name / Credentials (Initial Record) March 21, 2021

Recorded as HAROON ISMAIL

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) March 21, 2021

Student in an Organized Health Care Education/Training Program

🟒
Initial NPI Registration & Enumeration March 21, 2021

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1558947598
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: March 21, 2021
Last Update: April 28, 2025
Sole Proprietor: No

Other Ophthalmology Specialists in Chicago

All Ophthalmology Specialists in Chicago

Mailing Address

251 E Huron St

Chicago, IL 606112908

Phone: 3125037975

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.