Katherine Chang, M.D.
Hematology & Oncology Physician · Seattle, WA
Katherine Chang, M.D. is a hematology & oncology physician with a practice address in Seattle, Washington, and NPI 1427289982, issued on Jul 31, 2009. Check the license on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Katherine Chang
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- Practice location
- 825 Eastlake Ave., Seattle, WA 98109
- Phone
- (206) 520-5000
- Enumerated
- Jul 31, 2009
- Entity
- Type 1 · individual
Also registered at 825 Eastlake Ave.
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Matthew Givens, MDStudent in an Organized Health Care Education/Training Program1407349509
Verify Katherine Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical CommissionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
46% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
480 Medicare Part D claims for 97 beneficiaries, against an average of 885 among the 8,428 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims. 23 claims were for opioids.
Most prescribed
- Eliquis37 claims
- Anastrozole33 claims
- Ondansetron Hcl25 claims
- Potassium Chloride25 claims
- Brukinsa23 claims
- Loperamide22 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The Medicare quality score for 2023: 93.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $17.23
1 payment, mostly food and beverage; the largest payer was Sanofi Pasteur Inc.. The 6,678 providers of this specialty with any payment received $7,643.36 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital or facility affiliation
- The Association OF University PhysiciansSeattle, WA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Hematology & Oncology Physician providers in Washington
There are 400 hematology & oncology physician records in Washington.
Other hematology & oncology physician records in Washington
- Farnoush Abar, M.D.Seattle, WA1558560342
- Janis AbkowitzSeattle, WA1740366558
- David Aboulafia, MDSeattle, WA1043269392
- Shirali AgarwalSeattle, WA1972093052
- Amith Ahluwalia, MDWenatchee, WA1497231773
- Sharmila Ahmed, MDSeattle, WA1073512141
- Hani Alhashmi, M.D.Seattle, WA1841596582
- Naveed Ali, M.D.Seattle, WA1134569692
- Naif Aljohani, M.DSeattle, WA1487054573
- Aisha Alkhinji, MDSeattle, WA1770873614
Common questions
What is Katherine Chang, M.D.'s NPI number?
Katherine Chang, M.D.'s National Provider Identifier (NPI) is 1427289982, issued on Jul 31, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Chang, M.D. located?
The NPPES record lists a practice address at 825 Eastlake Ave., Seattle, WA, 98109. Phone: (206) 520-5000. Providers update this record themselves, so call before visiting.
How can I verify Katherine Chang, M.D.'s license?
Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katherine Chang, M.D. prescribe under Medicare Part D?
In 2024, Katherine Chang, M.D. had 480 Medicare Part D claims for 97 beneficiaries; the average among hematology & oncology physician prescribers was 885. Part D covers Medicare prescriptions only.
What is Katherine Chang, M.D.'s Medicare quality score?
The 2023 MIPS final score is 93.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.