Ellen Yang
Ophthalmology β’ Bloomington, MN
9801 Dupont Ave S Ste 200
Bloomington, MN 554313200
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 May 20, 2022; this date does not establish years in practice.
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Published CMS data list 686 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:
- Latanoprost β 191 prescription fills, including refills.
- Dorzolamide Hcl β 164 prescription fills, including refills.
- Timolol Maleate β 101 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 all 10 records in the table Β· Guide: How to read Medicare Part D prescriber data
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Fewer Part D prescriptions than 75% of clinicians listed under Ophthalmology in Bloomington, MN (2024, 15 clinicians with data). Median for this group: 1,282. Middle half: 763 to 3,885.
Close to the middle for Part D prescriptions among clinicians listed under Ophthalmology in Minnesota (2024, 274 clinicians with data). Median for this group: 917. Middle half: 326 to 1,879.
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 126 in 2023 to 686 in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2023β2024.
Practice Location & Contact Primary Location
9801 Dupont Ave S Ste 200
Bloomington, MN 554313200
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Chicago, IL. See the list
Source: CMS NPPES NPI Registry, practice location records; 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
R Franklin University Of Med & Sci/chicago Medical School
2022
What Public CMS Data Show
Ophthalmology: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
1,178 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
$17,652 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: $480.28 across 8 records.
By nature of payment
- Food and Beverage: $480.28 across 8 records.
Reporting-company totals (3 largest of 4)
- Alcon Vision LLC: $299.76 across 4 records.
- Amgen Inc.: $132.60 across 2 records.
- Apellis Pharmaceuticals, Inc.: $33.09 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).
Years since graduation
4 years (graduated 2022)
CMS Doctors and Clinicians data list 2022 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished 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
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.
May accept Medicare assignment
CMS data show this clinician may accept Medicare assignment. Clinicians who do not always accept assignment can decide case by case.
Ask the office before your visit. If a clinician does not accept assignment for a service, they can charge up to 15% more than the Medicare-approved amount, and you may be asked to pay the full amount at the visit.
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)
Ellen Yang 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 Ellen Yang 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 Bloomington and Minnesota
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Fewer Part D prescriptions than 75% of clinicians listed under Ophthalmology in Bloomington, MN (2024, 15 clinicians with data). Median for this group: 1,282. Middle half: 763 to 3,885.
Close to the middle for clinicians listed under Ophthalmology in Minnesota (2024, 274 clinicians with data). Median for this group: 917. Middle half: 326 to 1,879.
Part D drug cost
A lower Part D drug cost than 75% of clinicians listed under Ophthalmology in Bloomington, MN (2024, 15 clinicians with data). Median for this group: $70,035. Middle half: $27,083 to $233,084.
A lower Part D drug cost than 65% of clinicians listed under Ophthalmology in Minnesota (2024, 274 clinicians with data). Median for this group: $45,837. Middle half: $11,257 to $132,065.
22 active clinicians are listed under Ophthalmology with a practice address in Bloomington, MN (434 in Minnesota).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Bloomington
0% of these 22 clinicians have the CMS telehealth indicator.
63.6% of these 22 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 increased 444% from 126 in 2023 to 686 in 2024.
- 2023: 126
- 2024: 686
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30-day fills
30-day fills increased 405% from 233 in 2023 to 1,178 in 2024.
- 2023: 233
- 2024: 1,178
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Part D drug cost
Part D drug cost increased 489% from $2,998 in 2023 to $17,652 in 2024.
- 2023: $2,998
- 2024: $17,652
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2025 only.
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 $480.28.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
|
Clareon | General | $120.64 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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TEPEZZA | General | $104.96 |
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
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HYDRUS Microstent | General | $80.76 |
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
|
Clareon | General | $66.88 |
| Apellis Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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Syfovre | General | $33.09 |
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
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HYDRUS Microstent | General | $31.48 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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TEPEZZA | General | $27.64 |
| Mirum Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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CTEXLI | General | $14.83 |
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 |
|---|---|---|---|---|---|
| Latanoprost | Latanoprost | 191 | 9,616 | $1,289.99 | 74 |
| Dorzolamide Hcl | Dorzolamide Hcl | 164 | 8,056 | $2,396.61 | 52 |
| Timolol Maleate | Timolol Maleate | 101 | 5,553 | $967.28 | 38 |
| Brimonidine Tartrate | Brimonidine Tartrate | 93 | 5,347 | $1,092.98 | 37 |
| Prednisolone Acetate | Prednisolone Acetate | 52 | 1,847 | $2,728.83 | 25 |
| Levobunolol Hcl | Levobunolol Hcl | 26 | 1,455 | $480.68 | β |
| Rhopressa | Netarsudil Mesylate | 24 | 616 | $7,630.21 | β |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 12 | 297 | $107.60 | β |
| Betaxolol Hcl | Betaxolol Hcl | 12 | 745 | $877.03 | β |
| Ketorolac Tromethamine | Ketorolac Tromethamine | 11 | 325 | $80.32 | 11 |
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: 2026-04-17NUCC 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.
NUCC Taxonomy Code: 390200000X
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - OPHTHALMOLOGY
I20260519001900
MN
4981086758
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Secondary Practice Locations
1969 W Ogden Ave
Chicago, IL 606123765
Phone: 3128646000
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.)
Optometrist - Corneal and Contact Management
Doctor of Optometry
Optometrist
Doctor of Optometry
Optometrist
Doctor of Optometry
Optometrist - Corneal and Contact Management
Doctor of Optometry
Optometrist
Doctor of Optometry
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 9801 DUPONT AVE S STE 200, BLOOMINGTON, MN 554313200 (Tel: 9528885800)
Registered at 9801 DUPONT AVE S STE 425, BLOOMINGTON, MN 554313873 (Tel: 9528885800)
Ophthalmology (license number reported to NPPES: MN 82075)
NPI status registered as active in NPPES database
Registered at 1969 W OGDEN AVE, CHICAGO, IL 606123765 (Tel: 3128646000)
Registered at 1212 S MICHIGAN AVE APT 202, CHICAGO, IL 606052417 (Tel: 2486879406)
Recorded as ELLEN YANG
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 Bloomington
- Dr. Alvina Janda, MD
- Dr. Mark Hansen, MD
- Dr. Patrick Riedel, MD
- Chase Liaboe
- Dr. Matthew Field, MD, PhD, MSPH
- Dr. Yun-Sen Chu, MD
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Mailing Address
9801 Dupont Ave S Ste 425
Bloomington, MN 554313873
Phone: 9528885800