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Dr. Han H. Chang, MD
NPI1730404773
- Medicare services, 2022
- 14
- Medicare patients, 2024
- 19
- Part D claims, 2024
- 245
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 10180 Se Sunnyside Road, Clackamas, OR 97015
- Practice phone
- Call (503) 652-2880
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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. Han H. Chang is an emergency medicine physician in Clackamas, Oregon
Dr. Chang practices at Kaiser Permanente Sunnyside Medical Center in Clackamas, Oregon, part of Kaiser Permanente.
Dr. Chang's NPI, 1730404773, was assigned on April 1, 2010. Dr. Chang holds Nevada license 14796.
NPI and contact details
- NPI
- 1730404773NPI Registry (opens in a new tab)
- NPI enumeration date
- April 1, 2010
- NPI status
- Active
- Practice phone
- (503) 652-2880
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Han H. Chang practices at Kaiser Permanente Sunnyside Medical Center in Clackamas, Oregon
Dr. Chang's primary practice is Kaiser Permanente Sunnyside Medical Center, at 10180 Se Sunnyside Road, Clackamas, OR 97015 in Clackamas County. The practice phone is (503) 652-2880.
- Kaiser Permanente Sunnyside Medical Center10180 Se Sunnyside Road, Clackamas, OR 97015 · Clackamas CountyPhone(503) 652-2880
Source: Dmand AI Affiliation Data
Dr. Han H. Chang is affiliated with 1 site of care and 1 medical group
Dr. Chang's primary practice is Kaiser Permanente Sunnyside Medical Center in Clackamas, Oregon, part of Kaiser Permanente. The medical group on file is Kaiser Permanente Northwest.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Han H. Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente Sunnyside Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Han H. Chang is one of 962 emergency medicine physicians in Oregon
Emergency medicine is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Dr. Chang's licenses on file in 2 states: Nevada and Ohio.
Specialties and state licenses
- Emergency medicine, NevadaPrimary
- Ohio license
Emergency medicine physicians near Dr. Chang
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
962emergency medicine physicians in Oregon59emergency medicine physicians in Clackamas57emergency medicine physicians at Kaiser Permanente Sunnyside Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Han H. Chang billed Medicare for 14 services in 2022
CMS data shows 14 Medicare services from Dr. Chang across 1 procedure code in 2022, for 19 Medicare patients. Medicare paid $1,357 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202214
Medicare patients19
Paid by Medicare$1,357
Procedure codes1
Dr. Chang's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 222022: 1436%
Dr. Chang compared with the Oregon median for emergency medicine physicians, 2022
- Dr. Chang
- Oregon median
- Medicare services
- 14vs 17792% below
- Medicare patients
- 19vs 18190% below
- Part D claims
- 121vs 492.5 times
Medians across 1,000 emergency medicine physicians in Oregon with Dmand AI profiles that report each measure.
Dr. Chang's most billed Medicare procedure codes, 2022
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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chang and other emergency medicine physicians in Oregon.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Han H. Chang treated 19 Medicare patients in 2024, average age 68
CMS counts 19 Medicare patients who saw Dr. Chang in 2024. 58% of them have high blood pressure. Their average risk score is 1.38, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 47, with 58% women.
Medicare patients, 202419
Average age68
Average risk score1.38
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure58%
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 47
Patient panel by sex, all payers
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Han H. Chang wrote 245 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 245 Medicare Part D claims for 165 patients. 89% of them were for generic drugs. CMS names the drug for 121 of them, across 7 drugs with 11 or more claims each, at $1,277 in total drug cost. In 2022, CMS named 58 claims across 4 drugs.
Part D claims, 2024245
Drugs named by CMS7
Total drug cost$1,277
Part D patients165
Dr. Chang's Part D claims by kind of drug, 2024
- Generic217 claims89%
- Brand-name28 claims11%
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
- Opioids18%45 of 245 claims
- Antibiotics33%82 of 245 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, 2022 to 2024
- 2022
- 2024
- Claims for drugs CMS names
- 2022: 582024: 121109%
Drugs named by CMS: 7 in 2024, 4 in 2022.
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
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Dr. Han H. Chang has 1 publication on record
Dmand AI links 1 paper to Dr. Chang in 2012.
Papers1
Recent publications by Dr. Chang
See who Dr. Chang researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chang works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Han H. Chang received $17 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Chang from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Teva Pharmaceuticals USA, Inc. paid the most, $17.
Companies that paid Dr. Chang the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Han H. 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 | 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Han H. 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. Han H. Chang's NPI number?
Dr. Han H. Chang's NPI number is 1730404773. It was assigned on April 1, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Han H. Chang?
Dr. Han H. Chang is an emergency medicine physician in Clackamas, Oregon. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Han H. Chang practice?
Dr. Chang practices at 10180 Se Sunnyside Road, Clackamas, OR 97015. Dr. Chang's primary practice is Kaiser Permanente Sunnyside Medical Center in Clackamas, Oregon, part of Kaiser Permanente.
What is Dr. Han H. Chang's office phone number?
The practice phone on file for Dr. Chang is (503) 652-2880.
What is Dr. Han H. Chang's medical license number?
Dr. Chang holds Nevada license 14796, one of the licenses on file in 2 states.
Which states has Dr. Han H. Chang been licensed in?
Dmand AI has state licenses on file for Dr. Chang in Nevada and Ohio.
Which hospitals is Dr. Han H. Chang affiliated with?
Dr. Chang practices at Kaiser Permanente Sunnyside Medical Center in Clackamas, Oregon.
What medical group is Dr. Han H. Chang part of?
Dr. Chang is linked to Kaiser Permanente Northwest.
Does Dr. Han H. Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 14 services in 2022.
How many Medicare patients does Dr. Han H. Chang see?
CMS counts 19 Medicare patients who saw Dr. Chang in 2024, with an average age of 68.
Show 5 more questionsShow fewer questions
What services does Dr. Han H. Chang bill to Medicare?
In 2022, Dr. Chang's most billed Medicare services were emergency department visit (99284).
What drugs does Dr. Han H. Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Oxycodone HCl, Cephalexin and Ondansetron ODT.
Has Dr. Han H. Chang received payments from drug or device companies?
CMS Open Payments shows $17 in general payments to Dr. Chang from 1 company from 2023 to 2023. The largest total came from Teva Pharmaceuticals USA, Inc.
How long has Dr. Han H. Chang been practicing?
Dr. Chang graduated from medical school in 2010, 16 years ago.
Does Dr. Han H. Chang do research?
Dmand AI links 1 publication to Dr. Chang.
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