Dr. Chang Yang, MD
- Medicare services, 2024
- 1,286
- Medicare patients, 2024
- 466
- Part D claims, 2024
- 387
- Hospital affiliations
- 7
- Industry payments
- $10,384
- Practice address
- 333 E Second St, Richland Center, WI 53581
- Practice phone
- Call (608) 647-6321
- 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. Chang Yang is a hospitalist in Richland Center, Wisconsin
Dr. Yang practices at The Richland Hospital and Clinics in Richland Center, Wisconsin, part of The Richland Hospital.
Dr. Yang's NPI, 1902219611, was assigned on June 10, 2014. Dr. Yang holds Illinois license 036.143268.
- NPI
- 1902219611NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8820390644
- NPI enumeration date
- June 10, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (608) 647-6321
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chang Yang practices at The Richland Hospital and Clinics in Richland Center, Wisconsin
Dr. Yang's primary practice is The Richland Hospital and Clinics, at 333 E Second St, Richland Center, WI 53581 in Richland County. The practice phone is (608) 647-6321.
- The Richland Hospital and Clinics333 E Second St, Richland Center, WI 53581 · Richland CountyPhone(608) 647-6321
Source: Dmand AI Affiliation Data
Dr. Chang Yang is affiliated with 7 sites of care and 7 medical groups
Dr. Yang's primary practice is The Richland Hospital and Clinics in Richland Center, Wisconsin, part of The Richland Hospital. Dr. Yang is also affiliated with University of Chicago Medical Center. The medical group on file is Rural Physicians Group. Dmand AI also links Dr. Yang to 5 more hospitals and 6 medical groups, 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. Chang Yang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Yang practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The Richland Hospital and Clinics | Available with a free account |
| +6 more sites and 6 medical groups | 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 The Richland Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Chang Yang is one of 773 hospitalists in Wisconsin
Hospitalist is Dr. Yang's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dmand AI has Dr. Yang's licenses on file in 5 states: Illinois, Indiana, Missouri, Ohio and Wisconsin.
Specialties and state licenses
- Hospitalist, IllinoisPrimary
- Indiana license
- Missouri license
- Ohio license
- Wisconsin license
Hospitalists near Dr. Yang
Counts of hospitalists 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. Chang Yang billed Medicare for 1,286 services in 2024
CMS data shows 1,286 Medicare services from Dr. Yang across 5 procedure codes in 2024, for 466 Medicare patients. Medicare paid $126,220 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Yang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,2362024: 1,2864%
Dr. Yang compared with the Wisconsin median for hospitalists, 2024
- Dr. Yang
- Wisconsin median
- Medicare services
- 1,286vs 3573.6 times
- Medicare patients
- 466vs 1652.8 times
- Part D claims
- 179vs 782.3 times
Medians across 743 hospitalists in Wisconsin 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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Chang Yang treated 466 Medicare patients in 2024, average age 78
CMS counts 466 Medicare patients who saw Dr. Yang in 2024. The largest group is 75 to 84, with 184 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 2.26, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Yang's median patient age at 75, with 54% women.
Dr. Yang's Medicare patients by age, 2024
Dr. Yang's Medicare patients by sex, 2024
- Women24653%
- Men22047%
Chronic conditions among Dr. Yang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis60%
- Chronic kidney disease51%
- Heart failure50%
- Ischemic heart disease50%
- Diabetes46%
- Atrial fibrillation42%
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 75
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Chang Yang wrote 387 Medicare Part D claims in 2024
In 2024, Dr. Yang wrote 387 Medicare Part D claims for 158 patients. 89% of them were for generic drugs. CMS names the drug for 179 of them, across 11 drugs with 11 or more claims each, at $6,847 in total drug cost. In 2023, CMS named 40 claims across 3 drugs.
Dr. Yang's Part D claims by kind of drug, 2024
- Generic344 claims89%
- Brand-name and other43 claims11%
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
- Opioids6%25 of 387 claims
- Antibiotics16%61 of 387 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: 402024: 179348%
Drugs named by CMS: 11 in 2024, 3 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
How Dr. Chang Yang takes part in Medicare
Dr. Yang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Chang Yang received $10,384 in industry payments from 2016 to 2023
CMS Open Payments shows 18 general payments to Dr. Yang from 14 drug and device companies from 2016 to 2023. Consulting fees make up the largest share, 96% of the total. Astellas Pharma US Inc paid the most, $10,000.
General payments to Dr. Yang by program year, 2016 to 2023
General payments to Dr. Yang by kind, 2016 to 2023
- Consulting fees$10,00096%
- Food and beverage$3844%
Companies that paid Dr. Yang the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Chang 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Chang 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. Chang Yang's NPI number?
Dr. Chang Yang's NPI number is 1902219611. It was assigned on June 10, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Chang Yang?
Dr. Chang Yang is a hospitalist in Richland Center, Wisconsin. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Chang Yang practice?
Dr. Yang practices at 333 E Second St, Richland Center, WI 53581. Dr. Yang's primary practice is The Richland Hospital and Clinics in Richland Center, Wisconsin, part of The Richland Hospital. Dmand AI also links Dr. Yang to 5 hospitals and 6 medical groups.
What is Dr. Chang Yang's office phone number?
The practice phone on file for Dr. Yang is (608) 647-6321.
What is Dr. Chang Yang's medical license number?
Dr. Yang holds Illinois license 036.143268, one of the licenses on file in 5 states.
Which states has Dr. Chang Yang been licensed in?
Dmand AI has state licenses on file for Dr. Yang in Illinois, Indiana, Missouri, Ohio and Wisconsin.
Which hospitals is Dr. Chang Yang affiliated with?
Dr. Yang practices at The Richland Hospital and Clinics in Richland Center, Wisconsin. Dr. Yang is also affiliated with University of Chicago Medical Center. Dmand AI links Dr. Yang to 5 more hospitals.
What medical group is Dr. Chang Yang part of?
Dr. Yang is linked to Rural Physicians Group. Dmand AI links Dr. Yang to 6 more medical groups.
Does Dr. Chang Yang accept Medicare?
Yes. CMS data shows Dr. Yang billed Medicare for 1,286 services in 2024, and Dr. Yang accepts Medicare assignment.
How many Medicare patients does Dr. Chang Yang see?
CMS counts 466 Medicare patients who saw Dr. Yang in 2024, with an average age of 78.
Show 4 more questionsShow fewer questions
What services does Dr. Chang Yang bill to Medicare?
In 2024, Dr. Yang's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99223).
What drugs does Dr. Chang Yang prescribe most?
In 2024 Medicare Part D data, Dr. Yang's most prescribed drugs by claims were Diltiazem 24hr ER (XR), Metoprolol Succinate and Pantoprazole Sodium.
Has Dr. Chang Yang received payments from drug or device companies?
CMS Open Payments shows $10,384 in general payments to Dr. Yang from 14 companies from 2016 to 2023. The largest total came from Astellas Pharma US Inc.
How long has Dr. Chang Yang been practicing?
Dr. Yang graduated from medical school in 2005, 21 years ago.
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