Dr. Michael F. Chang, MD
- Medicare services, 2019
- 33
- Medicare patients, 2024
- 14
- MIPS score, 2024
- 99
- Hospital affiliations
- 2
- Industry payments
- $477
- Practice address
- 3181 SW Sam Jackson Park Road, Portland, OR 97239
- Practice phone
- Call (503) 494-9000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Michael F. Chang is a hepatology physician in Portland, Oregon
Dr. Chang practices at OHSU Hospital in Portland, Oregon, part of State of Oregon.
Dr. Chang's NPI, 1538213608, was assigned on January 23, 2007. Dr. Chang graduated from Boston University School of Medicine in 1999. Dr. Chang holds Oregon license MD27815.
- NPI
- 1538213608NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5193770881
- NPI enumeration date
- January 23, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (503) 494-9000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael F. Chang practices at OHSU Hospital in Portland, Oregon
Dr. Chang's primary practice is OHSU Hospital, at 3181 SW Sam Jackson Park Road, Portland, OR 97239 in Multnomah County. The practice phone is (503) 494-9000.
- OHSU Hospital3181 SW Sam Jackson Park Road, Portland, OR 97239 · Multnomah CountyPhone(503) 494-9000
Source: Dmand AI Affiliation Data
Dr. Michael F. Chang is affiliated with 4 sites of care and 1 medical group
Dr. Chang's primary practice is OHSU Hospital in Portland, Oregon, part of State of Oregon. Dr. Chang is also affiliated with Legacy Meridian Park Medical Center. The medical group on file is Oregon Health & Science University (OHSU). Dmand AI also links Dr. Chang to 1 more clinical lab and 1 group practice or clinic, 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. Michael F. Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| OHSU Hospital | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael F. Chang is one of 2 hepatology physicians in Oregon
Hepatology is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207RI0008X. Dr. Chang is licensed in Oregon.
Specialties and state licenses
- Hepatology, OregonPrimary
Hepatology physicians near Dr. Chang
Counts of hepatology physicians 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. Michael F. Chang billed Medicare for 33 services in 2019
CMS data shows 33 Medicare services from Dr. Chang across 1 procedure code in 2019, for 14 Medicare patients. Medicare paid $1,932 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chang's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 372019: 3311%
Dr. Chang's most billed Medicare procedure codes, 2019
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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Source: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data
Dr. Michael F. Chang treated 14 Medicare patients in 2024, average age 60
CMS counts 14 Medicare patients who saw Dr. Chang in 2024. The largest group is 85 and over, with 0 patients. Their average risk score is 2.69, 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 69, with 31% women.
Dr. Chang's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
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 69
Patient panel by sex, all payers
- Women31%
- Men69%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael F. Chang scored 99 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 99 out of 100 for Dr. Chang for performance year 2024, reported through an alternative payment model (APM). 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
- 99of 100Final score
- 84.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
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. Michael F. Chang received $477 in industry payments from 2016 to 2025
CMS Open Payments shows 6 general payments to Dr. Chang from 4 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $271.
General payments to Dr. Chang by program year, 2016 to 2025
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. Michael F. Chang graduated from Boston University School of Medicine
Dr. Chang graduated from Boston University School of Medicine in 1999.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael F. 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) |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - 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. Michael F. 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. Michael F. Chang's NPI number?
Dr. Michael F. Chang's NPI number is 1538213608. It was assigned on January 23, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael F. Chang?
Dr. Michael F. Chang is a hepatology physician in Portland, Oregon. The primary specialty in the NPI Registry is Hepatology Physician (taxonomy code 207RI0008X).
Where does Dr. Michael F. Chang practice?
Dr. Chang practices at 3181 SW Sam Jackson Park Road, Portland, OR 97239. Dr. Chang's primary practice is OHSU Hospital in Portland, Oregon, part of State of Oregon. Dmand AI also links Dr. Chang to 1 clinical lab and 1 group practice or clinic.
What is Dr. Michael F. Chang's office phone number?
The practice phone on file for Dr. Chang is (503) 494-9000.
What is Dr. Michael F. Chang's medical license number?
Dr. Chang holds Oregon license MD27815.
Which hospitals is Dr. Michael F. Chang affiliated with?
Dr. Chang practices at OHSU Hospital in Portland, Oregon. Dr. Chang is also affiliated with Legacy Meridian Park Medical Center.
What medical group is Dr. Michael F. Chang part of?
Dr. Chang is linked to Oregon Health & Science University (OHSU).
Does Dr. Michael F. Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 33 services in 2019, and Dr. Chang accepts Medicare assignment.
What is Dr. Michael F. Chang's MIPS score?
Dr. Chang's MIPS final score for performance year 2024 is 99 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Michael F. Chang see?
CMS counts 14 Medicare patients who saw Dr. Chang in 2024, with an average age of 60.
Show 4 more questionsShow fewer questions
What services does Dr. Michael F. Chang bill to Medicare?
In 2019, Dr. Chang's most billed Medicare services were hospital inpatient care (99232).
Where did Dr. Michael F. Chang go to medical school?
Dr. Chang graduated from Boston University School of Medicine in 1999.
Has Dr. Michael F. Chang received payments from drug or device companies?
CMS Open Payments shows $477 in general payments to Dr. Chang from 4 companies from 2016 to 2025. The largest total came from Gilead Sciences, Inc.
How long has Dr. Michael F. Chang been practicing?
Dr. Chang graduated from medical school in 1999, 27 years ago.
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