Dr. John W. Yang, MD
- Medicare services, 2024
- 4,423
- Medicare patients, 2024
- 1,570
- Part D claims, 2024
- 1,883
- MIPS score, 2024
- 92
- Hospital affiliations
- 1
- Practice address
- 251 E Huron St, Chicago, IL 60611
- Practice phone
- Call (312) 926-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Yang's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John W. Yang is an ophthalmologist in Chicago, Illinois
Dr. Yang practices at Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare.
Dr. Yang's NPI, 1942315312, was assigned on August 19, 2006. Dr. Yang graduated from Northwestern University Feinberg Medical School in 1996.
- NPI
- 1942315312NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345366274
- NPI enumeration date
- August 19, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (312) 926-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John W. Yang practices at Northwestern Memorial Hospital in Chicago, Illinois
Dr. Yang's primary practice is Northwestern Memorial Hospital, at 251 E Huron St, Chicago, IL 60611 in Cook County. The practice phone is (312) 926-2000.
- Northwestern Memorial Hospital251 E Huron St, Chicago, IL 60611 · Cook CountyPhone(312) 926-2000
Source: Dmand AI Affiliation Data
Dr. John W. Yang is affiliated with 2 sites of care and 1 medical group
Dr. Yang's primary practice is Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare. Dmand AI also links Dr. Yang to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John W. Yang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Yang practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Memorial Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Northwestern Memorial HealthCare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John W. Yang is one of 692 ophthalmologists in Illinois
Ophthalmology is Dr. Yang's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Yang has a license on file in Illinois.
Specialties and state licenses
- Ophthalmology, Illinois
Ophthalmologists near Dr. Yang
Counts of ophthalmologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John W. Yang billed Medicare for 4,423 services in 2024
CMS data shows 4,423 Medicare services from Dr. Yang across 15 procedure codes in 2024, for 1,570 Medicare patients. Medicare paid $322,075 for them.
Dr. Yang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2,1182024: 2,2255%
- Tests and treatments
- 2023: 1,6222024: 1,5872%
- Other services
- 2023: 02024: 372
- Surgery
- 2023: 2162024: 2244%
- Imaging
- 2023: 332024: 1555%
Where Dr. Yang's Medicare services took place, 2024
- In an office4,30297%
- In a facility1213%
Dr. Yang compared with the Illinois median for ophthalmologists, 2024
- Dr. Yang
- Illinois median
- Medicare services
- 4,423vs 1,5442.9 times
- Medicare patients
- 1,570vs 5772.7 times
- Part D claims
- 1,759vs 5823.0 times
Medians across 710 ophthalmologists in Illinois with Dmand AI profiles that report each measure.
Dr. Yang's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Yang?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Yang and other ophthalmologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John W. Yang treated 1,570 Medicare patients in 2024, average age 76
CMS counts 1,570 Medicare patients who saw Dr. Yang in 2024. The largest group is 75 to 84, with 740 patients. 75% of them have high cholesterol, and 60% have high blood pressure. 4% are also on Medicaid. Their average risk score is 0.88, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Yang's median patient age at 70, with 62% women.
Dr. Yang's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Yang's Medicare patients by sex, 2024
- Women97862%
- Men59238%
Chronic conditions among Dr. Yang's Medicare patients, 2024
- High cholesterol75%
- High blood pressure60%
- Arthritis40%
- Ischemic heart disease22%
- Osteoporosis22%
- Cancer20%
- Diabetes20%
- Anxiety16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Yang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women62%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John W. Yang wrote 1,883 Medicare Part D claims in 2024
In 2024, Dr. Yang wrote 1,883 Medicare Part D claims for 421 patients. 50% of them were for generic drugs. CMS names the drug for 1,759 of them, across 29 drugs with 11 or more claims each, at $318,381 in total drug cost. In 2023, CMS named 1,656 claims across 27 drugs.
Dr. Yang's Part D claims by kind of drug, 2024
- Generic937 claims50%
- Brand-name946 claims50%
Dr. Yang's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Yang's Part D claims, 2024
- Antibiotics2%30 of 1,883 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,6562024: 1,7596%
Drugs named by CMS: 29 in 2024, 27 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. John W. Yang scored 92 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 92 out of 100 for Dr. Yang for performance year 2024, reported as part of a group. Dr. Yang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 229 procedures of cataract surgery by Dr. Yang, more than 86% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Yang's MIPS scores, performance year 2024
- 92of 100Final score
- 100of 100Quality
- 40of 100Improvement Activities
- 74of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Yang ranks in Medicare procedure volume
- Cataract surgery
- 86th percentile229 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. John W. Yang received $2,591 in industry payments from 2016 to 2025
CMS Open Payments shows 114 general payments to Dr. Yang from 21 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Allergan Inc. paid the most, $490.
General payments to Dr. Yang by program year, 2016 to 2025
General payments to Dr. Yang by kind, 2016 to 2025
- Food and beverage$2,53498%
- Education$381%
- Gifts$191%
Companies that paid Dr. Yang the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John W. Yang graduated from Northwestern University Feinberg Medical School
Dr. Yang graduated from Northwestern University Feinberg Medical School in 1996.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John W. Yang's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John W. Yang
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John W. Yang's NPI number?
Dr. John W. Yang's NPI number is 1942315312. It was assigned on August 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John W. Yang?
Dr. John W. Yang is an ophthalmologist in Chicago, Illinois. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. John W. Yang practice?
Dr. Yang practices at 251 E Huron St, Chicago, IL 60611. Dr. Yang's primary practice is Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare. Dmand AI also links Dr. Yang to 1 group practice or clinic and 1 medical group.
What is Dr. John W. Yang's office phone number?
The practice phone on file for Dr. Yang is (312) 926-2000.
Which hospitals is Dr. John W. Yang affiliated with?
Dr. Yang practices at Northwestern Memorial Hospital in Chicago, Illinois.
Does Dr. John W. Yang accept Medicare?
Yes. CMS data shows Dr. Yang billed Medicare for 4,423 services in 2024, and Dr. Yang accepts Medicare assignment.
What is Dr. John W. Yang's MIPS score?
Dr. Yang's MIPS final score for performance year 2024 is 92 out of 100, reported as part of a group.
How many Medicare patients does Dr. John W. Yang see?
CMS counts 1,570 Medicare patients who saw Dr. Yang in 2024, with an average age of 76.
What services does Dr. John W. Yang bill to Medicare?
In 2024, Dr. Yang's most billed Medicare services were office visit, established patient (99214), eye exam or test (92133) and eye exam or test (92083).
Where did Dr. John W. Yang go to medical school?
Dr. Yang graduated from Northwestern University Feinberg Medical School in 1996.
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What drugs does Dr. John W. Yang prescribe most?
In 2024 Medicare Part D data, Dr. Yang's most prescribed drugs by claims were Latanoprost, Timolol Maleate and Prednisolone Acetate.
Has Dr. John W. Yang received payments from drug or device companies?
CMS Open Payments shows $2,591 in general payments to Dr. Yang from 21 companies from 2016 to 2025. The largest total came from Allergan Inc.
How long has Dr. John W. Yang been practicing?
Dr. Yang graduated from medical school in 1996, 30 years ago.
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