Chiajin Chiou, MD
Internal Medicine Physician · Mount Vernon, WA
Chiajin Chiou, MD is an internal medicine physician with a practice address in Mount Vernon, Washington, and NPI 1972815413, issued on Jul 13, 2010. Check the license (Washington MD60371422, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Chiajin Chiou
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD60371422 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1415 E Kincaid St, Mount Vernon, WA 98274
- Phone
- (360) 416-5750
- Enumerated
- Jul 13, 2010
- Record last updated
- Aug 19, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (360) 416-5758
- Medicare enrollment
- Enrolled (PECOS I20131106001872); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,079 in Washington → Look up another NPI →
Also registered at 1415 E Kincaid St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ahmed Abou-ZeidStudent in an Organized Health Care Education/Training Program1770421026
- Thea Anderson, ARNPFamily Nurse Practitioner1316685100
- Precious Barnes, DOHospitalist Physician1477819159
- Asheesh Batra, DOStudent in an Organized Health Care Education/Training Program1235999830
- Erin Beck, PHARMDPharmacist1871844381
- Eric Bing, MDStudent in an Organized Health Care Education/Training Program1811647977
Verify Chiajin Chiou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD60371422Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
160 Medicare Part D claims for 83 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.
Most prescribed
- Furosemide16 claims
- Oxycodone Hcl11 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 practice group's MIPS final score for 2023 (Medicare payment program): 79.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Overlake Medical Clinics LLCBellevue, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chiajin Chiou among 3,079 internal medicine physician records in Washington
Chiajin Chiou, MD 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 2010, is newer than 62% of them.
- NPI issued2010 · 62% of these records are older, 35% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2010 · 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).
33 internal medicine physician records list a practice address in Mount Vernon
They are 33 of the 1,500 NPPES records with a practice address in Mount Vernon, and 3,079 internal medicine physician records in Washington.
All 3,079 in Washington → Every provider in Mount Vernon → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sandeep Bal, MDMount Vernon, WA 982741386819449
- Thomas Carr, MDMount Vernon, WA 982741548271091
- Nancy Chaffee, M.D.Mount Vernon, WA 982741467604231
- Dmitry Feldman, DOMount Vernon, WA 982741629247689
- Thomas George, M.D.Mount Vernon, WA 982741952361727
- David Hoeft, MDMount Vernon, WA 982741164489076
- Dorien McAbee, DOMount Vernon, WA 982741417185802
- Deborah North, MDMount Vernon, WA 982741588628747
Common questions
What is Chiajin Chiou, MD's NPI number?
Chiajin Chiou, MD's National Provider Identifier (NPI) is 1972815413, issued on Jul 13, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Chiajin Chiou, MD located?
The NPPES record lists a practice address at 1415 E Kincaid St, Mount Vernon, WA, 98274. Phone: (360) 416-5750. Providers update this record themselves, so call before visiting.
How can I verify Chiajin Chiou, MD's license?
NPPES lists Washington license number MD60371422, 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 Chiajin Chiou, MD prescribe under Medicare Part D?
In 2024, Chiajin Chiou, MD had 160 Medicare Part D claims for 83 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Chiajin Chiou, MD's MIPS final score?
The 2023 MIPS final score is 79.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.