Dr. Steve I. Chang, MD
- Medicare services, 2024
- 1,954
- Medicare patients, 2024
- 473
- Part D claims, 2024
- 20,255
- MIPS score, 2024
- 84
- Hospital affiliations
- 1
- Practice address
- 325 N Corporate Dr, Brookfield, WI 53045
- Practice phone
- Call (262) 335-4500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Samaritan Nursing and Rehab
Brookfield, Wisconsin
Find Dr. Chang'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. Steve I. Chang is an internist in Brookfield, Wisconsin
Dr. Chang practices at Samaritan Nursing and Rehab in Brookfield, Wisconsin.
Dr. Chang's NPI, 1295897569, was assigned on December 14, 2006. Dr. Chang graduated from New York University School of Medicine in 1994. Dr. Chang holds Wisconsin license 38648.
- NPI
- 1295897569NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557360781
- NPI enumeration date
- December 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (262) 335-4500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Steve I. Chang practices at Samaritan Nursing and Rehab in Brookfield, Wisconsin
Dr. Chang's primary practice is Samaritan Nursing and Rehab, at 325 N Corporate Dr, Brookfield, WI 53045 in Waukesha County. The practice phone is (262) 335-4500.
- Samaritan Nursing and Rehab325 N Corporate Dr, Brookfield, WI 53045 · Waukesha CountyPhone(262) 335-4500
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Steve I. Chang is affiliated with 12 sites of care
Dr. Chang's primary practice is Samaritan Nursing and Rehab in Brookfield, Wisconsin. Dr. Chang is also affiliated with Aurora St. Luke's Medical Center. Dmand AI also links Dr. Chang to 5 more hospices, 4 skilled nursing facilities and 1 physician office, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Steve I. Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 11 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Samaritan Nursing and Rehab | Available with a free account |
| +11 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Steve I. Chang is one of 1,675 internists in Wisconsin
Internal medicine is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chang is licensed in Wisconsin.
Specialties and state licenses
- Internal medicine, WisconsinPrimary
Internists near Dr. Chang
Counts of internists 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. Steve I. Chang billed Medicare for 1,954 services in 2024
CMS data shows 1,954 Medicare services from Dr. Chang across 15 procedure codes in 2024, for 473 Medicare patients. Medicare paid $144,344 for them.
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2,3202024: 1,87219%
- Other services
- 2023: 662024: 5714%
- Tests and treatments
- 2023: 152024: 2567%
Where Dr. Chang's Medicare services took place, 2024
- In an office27514%
- In a facility1,67986%
Dr. Chang compared with the Wisconsin median for internists, 2024
- Dr. Chang
- Wisconsin median
- Medicare services
- 1,954vs 4574.3 times
- Medicare patients
- 473vs 1992.4 times
- Part D claims
- 19,403vs 43344.8 times
Medians across 1,658 internists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Chang'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. Chang?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chang and other internists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Steve I. Chang treated 473 Medicare patients in 2024, average age 84
CMS counts 473 Medicare patients who saw Dr. Chang in 2024. The largest group is 85 and over, with 245 patients. 75% of them have arthritis, and 75% have high blood pressure. 26% are also on Medicaid. Their average risk score is 2.13, 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. Chang's median patient age at 86, with 65% women.
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women32068%
- Men15332%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease48%
- Heart failure41%
- Ischemic heart disease41%
- Mood disorders41%
- Depression40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 86
Patient panel by sex, all payers
- Women65%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Steve I. Chang wrote 20,255 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 20,255 Medicare Part D claims for 636 patients. 82% of them were for generic drugs. CMS names the drug for 19,403 of them, across 215 drugs with 11 or more claims each, at $1,337,453 in total drug cost. In 2023, CMS named 22,201 claims across 229 drugs.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic16,609 claims82%
- Brand-name3,580 claims18%
- Other66 claims0%
Dr. Chang'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. Chang's Part D claims, 2024
- Opioids2%360 of 20,255 claims
- Antibiotics1%296 of 20,255 claims
- Antipsychotics, patients 65 and over1%206 of 20,255 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: 22,2012024: 19,40313%
Drugs named by CMS: 215 in 2024, 229 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. Steve I. Chang scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Chang for performance year 2024, reported individually. Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Chang's MIPS scores, performance year 2024
- 84of 100Final score
- 77.2of 100Quality
- 93of 100Promoting Interoperability
- 40of 100Improvement Activities
- 52of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Steve I. Chang received $32,852 in industry payments from 2016 to 2025
CMS Open Payments shows 2,013 general payments to Dr. Chang from 67 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Novo Nordisk Inc paid the most, $4,473.
General payments to Dr. Chang by program year, 2016 to 2025
General payments to Dr. Chang by kind, 2016 to 2025
- Food and beverage$32,25598%
- Education$5582%
- Speaker and faculty fees$390%
Companies that paid Dr. Chang 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. Steve I. Chang graduated from New York University School of Medicine
Dr. Chang graduated from New York University School of Medicine in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Steve I. Chang'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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. Steve I. Chang
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. Steve I. Chang's NPI number?
Dr. Steve I. Chang's NPI number is 1295897569. It was assigned on December 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Steve I. Chang?
Dr. Steve I. Chang is an internist in Brookfield, Wisconsin. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Steve I. Chang practice?
Dr. Chang practices at 325 N Corporate Dr, Brookfield, WI 53045. Dr. Chang's primary practice is Samaritan Nursing and Rehab in Brookfield, Wisconsin. Dmand AI also links Dr. Chang to 5 hospices, 4 skilled nursing facilities and 1 physician office.
What is Dr. Steve I. Chang's office phone number?
The practice phone on file for Dr. Chang is (262) 335-4500.
What is Dr. Steve I. Chang's medical license number?
Dr. Chang holds Wisconsin license 38648.
Which hospitals is Dr. Steve I. Chang affiliated with?
Dr. Chang is affiliated with Aurora St. Luke's Medical Center.
Does Dr. Steve I. Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 1,954 services in 2024, and Dr. Chang accepts Medicare assignment.
What is Dr. Steve I. Chang's MIPS score?
Dr. Chang's MIPS final score for performance year 2024 is 84 out of 100, reported individually.
How many Medicare patients does Dr. Steve I. Chang see?
CMS counts 473 Medicare patients who saw Dr. Chang in 2024, with an average age of 84.
What services does Dr. Steve I. Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were nursing facility care (99308), nursing facility care (99309) and nursing facility care (99305).
Show 4 more questionsShow fewer questions
Where did Dr. Steve I. Chang go to medical school?
Dr. Chang graduated from New York University School of Medicine in 1994.
What drugs does Dr. Steve I. Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Furosemide.
Has Dr. Steve I. Chang received payments from drug or device companies?
CMS Open Payments shows $32,852 in general payments to Dr. Chang from 67 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Steve I. Chang been practicing?
Dr. Chang graduated from medical school in 1994, 32 years ago.
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