Dr. Angela Yaru Chang , MD
Ophthalmology β’ Chicago, IL
1009 S Wood St
Chicago, IL 606123747
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on March 23, 2022; this date does not establish years in practice.
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Published CMS data list 22 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Erythromycin (Erythromycin Base) β 22 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table Β· Guide: How to read Medicare Part D prescriber data
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Fewer Part D prescriptions than 90% 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.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 21 in 2023 to 22 in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2023β2024.
Practice Location & Contact Primary Location
1009 S Wood St
Chicago, IL 606123747
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Ophthalmology: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
22 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
$368 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
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 β by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $155.23 across 2 records.
By nature of payment
- Food and Beverage: $155.23 across 2 records.
Reporting-company totals
- Alcon Vision LLC: $140.54 across 1 record.
- Boston Scientific Corporation: $14.69 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
NPI first issued
2022
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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, βDoes your provider accept Medicare as full payment?β
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.
Enrolled in Medicare (PECOS)
Dr. Chang 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.
Can order Medicare-covered services
CMS lists Dr. Chang 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.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
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.
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 90% 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 95% 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.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions stayed about the same: 21 in 2023 and 22 in 2024.
- 2023: 21
- 2024: 22
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30-day fills
30-day fills stayed about the same: 21 in 2023 and 22 in 2024.
- 2023: 21
- 2024: 22
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Part D drug cost
Part D drug cost went from $272 in 2023 to $368 in 2024.
- 2023: $272
- 2024: $368
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $130.47 in 2023 to $155.23 in 2025.
- 2023: $130.47
- 2025: $155.23
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
Program year 2025 (payments made January 1 β December 31, 2025): fewer than 11 records totaling $155.23.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
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Clareon | General | $140.54 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
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ACCOLADE SR | General | $14.69 |
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.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Erythromycin | Erythromycin Base | 22 | 237 | $368.04 | 18 |
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: 2026-05-21NUCC Taxonomy Code: 207W00000X
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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSORDER AND REFERRING ONLY - OPHTHALMOLOGY
I20260423001291
IL
4688141047
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Ophthalmology
Doctor of Medicine (M.D.)
Ophthalmology
Doctor of Medicine (M.D.)
Optometrist
Doctor of Optometry
Ophthalmology
Ophthalmology
Doctor of Medicine (M.D.)
Ophthalmology
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1009 S WOOD ST, CHICAGO, IL 606123747 (Tel: 3129967445)
Ophthalmology (license number reported to NPPES: IL 036.179020)
Registered at 820 S WOOD ST, CHICAGO, IL 606124325
Student in an Organized Health Care Education/Training Program (license number reported to NPPES: IL 036.179020)
Registered at 51 N 39TH ST, PHILADELPHIA, PA 191042640
Registered at 51 N 39TH ST, PHILADELPHIA, PA 191042640 (Tel: 2153165151)
NPI status registered as active in NPPES database
Registered at 824 HUNT RD, NEWTOWN SQUARE, PA 190733522 (Tel: 6106620001)
Registered at 824 HUNT RD, NEWTOWN SQUARE, PA 190733522
Recorded as ANGELA CHANG, MD
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Ophthalmology Specialists in Chicago
- Dr. Anne Langguth, MD
- Dr. Anjali Tannan, MD
- Dr. Lee Jampol, MD
- Dr. David Tresley, MD
- Dr. Wendewessen Amde, MD
- Dr. Gary Lissner, MD
Mailing Address
820 S Wood St
Chicago, IL 606124325