Tina Ann Chang
Internal Medicine Physician · Seattle, WA
Tina Ann Chang is an internal medicine physician with a practice address in Seattle, Washington, and NPI 1912083635, issued on Oct 27, 2006. Check the license (Washington MD00036408, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Tina Ann Chang
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD00036408 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1100 9TH Ave, Seattle, WA 98101
- Phone
- (206) 341-0860
- Enumerated
- Oct 27, 2006
- Record last updated
- Oct 10, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid IDs
- 8246472 WA
1912083635 WA - Medicare enrollment
- Enrolled (PECOS I20050107000591); accepts Medicare assignment
- Medical or professional school
- University Of Michigan Medical School, 1996
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,079 in Washington → Look up another NPI →
Also registered at 1100 9TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Tina Ann Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00036408Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
63 Medicare Part D claims for 30 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
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.
One hospital affiliation
- Virginia Mason Medical CenterSeattle, WA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Tina Ann Chang among 3,079 internal medicine physician records in Washington
Tina Ann Chang is one of 3,079 internal medicine physician records with a practice address in Washington. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1996 · median 2006 among the 1,852 with a school on file
- Record last updated2013 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
821 internal medicine physician records list a practice address in Seattle
They are 821 of the 41,956 NPPES records with a practice address in Seattle, and 3,079 internal medicine physician records in Washington.
All 3,079 in Washington → Every provider in Seattle → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Lesley Althouse, MDSeattle, WA 981011669402608
- Leslie Bailey, M.D.Seattle, WA 981011255366613
- A Bender, MDSeattle, WA 981011265462634
- Christopher Carlsten, MDSeattle, WA 981011891734208
- Stephan Fihn, MDSeattle, WA 981011225098320
- Richard Furlong, MDSeattle, WA 981011457370777
- Carrie Horwitch, MDSeattle, WA 981011477574325
- Paul Kassab, MDSeattle, WA 981011740287275
Common questions
What is Tina Ann Chang's NPI number?
Tina Ann Chang's National Provider Identifier (NPI) is 1912083635, issued on Oct 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tina Ann Chang located?
The NPPES record lists a practice address at 1100 9TH Ave, Seattle, WA, 98101. Phone: (206) 341-0860. Providers update this record themselves, so call before visiting.
How can I verify Tina Ann Chang's license?
NPPES lists Washington license number MD00036408, as entered by the provider. 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 Tina Ann Chang prescribe under Medicare Part D?
In 2024, Tina Ann Chang had 63 Medicare Part D claims for 30 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.