Taiwan J Ophthalmol
Dr. Joseph Chang, MD
NPI1497173116PAC ID7113211418
- Medicare services, 2024
- 507
- Medicare patients, 2024
- 209
- Part D claims, 2024
- 121
- Publications
- 1
- Hospital affiliations
- 2
- Practice address
- 1959 NE Pacific St Box 356151, Seattle, WA 98195
- Practice phone
- Call (206) 598-3300
- 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. Joseph Chang is an otolaryngologist in Seattle, Washington
Dr. Chang practices at UW Medical Center - Montlake in Seattle, Washington, part of University of Washington.
Dr. Chang's NPI, 1497173116, was assigned on March 31, 2014. Dr. Chang holds Washington license MD61423790.
NPI and contact details
- NPI
- 1497173116NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7113211418
- NPI enumeration date
- March 31, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (206) 598-3300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joseph Chang practices at UW Medical Center - Montlake in Seattle, Washington
Dr. Chang's primary practice is UW Medical Center - Montlake, at 1959 NE Pacific St Box 356151, Seattle, WA 98195 in King County. The practice phone is (206) 598-3300.
- UW Medical Center - Montlake1959 NE Pacific St Box 356151, Seattle, WA 98195 · King CountyPhone(206) 598-3300
Source: Dmand AI Affiliation Data
Dr. Joseph Chang is affiliated with 4 sites of care and 1 medical group
Dr. Chang's primary practice is UW Medical Center - Montlake in Seattle, Washington, part of University of Washington. The medical group on file is UW Physicians. Dmand AI also links Dr. Chang to 1 more hospital, 1 group practice or clinic and 1 hospital outpatient department, each named with a free account.
UW Physicians1 hospitalName with a free account1 group practice or clinicName with a free account1 hospital outpatient departmentName with a free account
See all 5 affiliations for Dr. ChangSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Joseph 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 |
|---|---|
| UW Medical Center - Montlake | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Joseph Chang is one of 254 otolaryngologists in Washington
Otolaryngology is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207Y00000X. Dr. Chang is licensed in Washington.
Specialties and state licenses
- Otolaryngology, WashingtonPrimary
Otolaryngologists near Dr. Chang
Counts of otolaryngologists with a Dmand AI profile, by place and practice. Each opens the list.
254otolaryngologists in Washington71otolaryngologists in Seattle23otolaryngologists at UW Medical Center - Montlake
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Joseph Chang billed Medicare for 507 services in 2024
CMS data shows 507 Medicare services from Dr. Chang across 10 procedure codes in 2024, for 209 Medicare patients. Medicare paid $65,396 for them. Every service was in an office.
Medicare services, 2024507
Medicare patients209
Paid by Medicare$65,396
Procedure codes10
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1002024: 267167%
- Surgery
- 2023: 852024: 181113%
- Other services
- 2023: 02024: 59
Dr. Chang compared with the Washington median for otolaryngologists, 2024
- Dr. Chang
- Washington median
- Medicare services
- 507vs 40326% above
- Medicare patients
- 209vs 2257% below
- Part D claims
- 36vs 16078% below
Medians across 241 otolaryngologists in Washington 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 otolaryngologists in Washington.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joseph Chang treated 209 Medicare patients in 2024, average age 74
CMS counts 209 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 94 patients. 67% of them have high cholesterol, and 58% have high blood pressure. 15% are also on Medicaid. Their average risk score is 1.33, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 54, with 56% women.
Medicare patients, 2024209
Average age74
Average risk score1.33
Also on Medicaid15%
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women13464%
- Men7536%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High cholesterol67%
- High blood pressure58%
- Arthritis41%
- Mood disorders33%
- Depression29%
- Anxiety26%
- Osteoporosis26%
- Ischemic heart disease25%
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 54
Patient panel by sex, all payers
- Women56%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Joseph Chang wrote 121 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 121 Medicare Part D claims for 66 patients. 100% of them were for generic drugs. CMS names the drug for 36 of them, across 2 drugs with 11 or more claims each, at $880 in total drug cost. In 2023, CMS named 13 claims across 1 drug.
Part D claims, 2024121
Drugs named by CMS2
Total drug cost$880
Part D patients66
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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 132024: 36177%
Drugs named by CMS: 2 in 2024, 1 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. Joseph Chang offers telehealth to Medicare patients
Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chang as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
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Dr. Joseph Chang has 1 publication on record
Dmand AI links 1 paper to Dr. Chang in 2021. Dr. Chang's most frequent co-author is Stephen Hing-Lam Tsang, MD.
Papers1
Dr. Chang's most frequent co-authors
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 otolaryngologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Joseph Chang received $279 in industry payments from 2019 to 2025
CMS Open Payments shows 3 general payments to Dr. Chang from 3 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 86% of the total. GlaxoSmithKline, LLC. paid the most, $125.
General payments to Dr. Chang by program year, 2019 to 2025
General payments to Dr. Chang by kind, 2019 to 2025
$279in total
- Food and beverage$23986%
- Education$4014%
Companies that paid Dr. Chang the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Joseph 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. Joseph 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. Joseph Chang's NPI number?
Dr. Joseph Chang's NPI number is 1497173116. It was assigned on March 31, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Joseph Chang?
Dr. Joseph Chang is an otolaryngologist in Seattle, Washington. The primary specialty in the NPI Registry is Otolaryngology Physician (taxonomy code 207Y00000X).
Where does Dr. Joseph Chang practice?
Dr. Chang practices at 1959 NE Pacific St Box 356151, Seattle, WA 98195. Dr. Chang's primary practice is UW Medical Center - Montlake in Seattle, Washington, part of University of Washington. Dmand AI also links Dr. Chang to 1 hospital, 1 group practice or clinic and 1 hospital outpatient department.
What is Dr. Joseph Chang's office phone number?
The practice phone on file for Dr. Chang is (206) 598-3300.
What is Dr. Joseph Chang's medical license number?
Dr. Chang holds Washington license MD61423790.
Which hospitals is Dr. Joseph Chang affiliated with?
Dr. Chang practices at UW Medical Center - Montlake in Seattle, Washington. Dmand AI links Dr. Chang to 1 more hospital.
What medical group is Dr. Joseph Chang part of?
Dr. Chang is linked to UW Physicians.
Does Dr. Joseph Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 507 services in 2024, and Dr. Chang accepts Medicare assignment.
Does Dr. Joseph Chang offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chang as offering telehealth services.
How many Medicare patients does Dr. Joseph Chang see?
CMS counts 209 Medicare patients who saw Dr. Chang in 2024, with an average age of 74.
Show 6 more questionsShow fewer questions
What services does Dr. Joseph Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were office visit, established patient (99213), surgery: lungs and airway (31579) and medicare service (G2211).
What drugs does Dr. Joseph Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Azelastine HCl and Fluticasone Propionate.
Has Dr. Joseph Chang received payments from drug or device companies?
CMS Open Payments shows $279 in general payments to Dr. Chang from 3 companies from 2019 to 2025. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Joseph Chang been practicing?
Dr. Chang graduated from medical school in 2014, 12 years ago.
Does Dr. Joseph Chang do research?
Dmand AI links 1 publication to Dr. Chang.
Who does Dr. Joseph Chang publish with?
Dr. Chang's most frequent co-authors are Stephen Hing-Lam Tsang, MD (1 shared paper).
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