Dr. Chiajin Chiou, MD
- Medicare services, 2024
- 563
- Medicare patients, 2024
- 167
- Part D claims, 2024
- 160
- MIPS score, 2024
- 87
- Hospital affiliations
- 1
- Practice address
- 1035-116Th Ave NE, Bellevue, WA 98004
- Practice phone
- Call (425) 688-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Chiajin Chiou is an internist in Bellevue, Washington
Dr. Chiou practices at Overlake Medical Center in Bellevue, Washington, part of MultiCare Health System.
Dr. Chiou's NPI, 1972815413, was assigned on July 13, 2010. Dr. Chiou graduated from Saint Louis University School of Medicine in 2010. Dr. Chiou holds Washington license MD60371422.
- NPI
- 1972815413NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4183859739
- NPI enumeration date
- July 13, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (425) 688-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chiajin Chiou practices at Overlake Medical Center in Bellevue, Washington
Dr. Chiou's primary practice is Overlake Medical Center, at 1035-116Th Ave NE, Bellevue, WA 98004 in King County. The practice phone is (425) 688-5000.
- Overlake Medical Center1035-116Th Ave NE, Bellevue, WA 98004 · King CountyPhone(425) 688-5000
Source: Dmand AI Affiliation Data
Dr. Chiajin Chiou is affiliated with 1 site of care and 1 medical group
Dr. Chiou's primary practice is Overlake Medical Center in Bellevue, Washington, part of MultiCare Health System. The medical group on file is Overlake Clinics Cardiology.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Chiajin Chiou's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chiou practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Overlake Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Chiajin Chiou is one of 2,689 internists in Washington
Internal medicine is Dr. Chiou's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chiou is licensed in Washington.
Specialties and state licenses
- Internal medicine, WashingtonPrimary
Internists near Dr. Chiou
Counts of internists 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. Chiajin Chiou billed Medicare for 563 services in 2024
CMS data shows 563 Medicare services from Dr. Chiou across 5 procedure codes in 2024, for 167 Medicare patients. Medicare paid $53,896 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chiou's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6242024: 53714%
- Other services
- 2023: 02024: 26
Dr. Chiou compared with the Washington median for internists, 2024
- Dr. Chiou
- Washington median
- Medicare services
- 563vs 36455% above
- Medicare patients
- 167vs 165Close to median
- Part D claims
- 27vs 18285% below
Medians across 2,604 internists in Washington with Dmand AI profiles that report each measure.
Dr. Chiou'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Chiajin Chiou treated 167 Medicare patients in 2024, average age 84
CMS counts 167 Medicare patients who saw Dr. Chiou in 2024. The largest group is 85 and over, with 85 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 13% are also on Medicaid. Their average risk score is 2.12, 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. Chiou's median patient age at 73, with 54% women.
Dr. Chiou's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chiou's Medicare patients by sex, 2024
- Women10160%
- Men6640%
Chronic conditions among Dr. Chiou's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Heart failure50%
- Atrial fibrillation49%
- Ischemic heart disease49%
- Chronic kidney disease43%
- Mood disorders40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chiou's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Chiajin Chiou wrote 160 Medicare Part D claims in 2024
In 2024, Dr. Chiou wrote 160 Medicare Part D claims for 83 patients. 83% of them were for generic drugs. CMS names the drug for 27 of them, across 2 drugs with 11 or more claims each, at $109 in total drug cost. In 2023, CMS named 68 claims across 5 drugs.
Dr. Chiou's Part D claims by kind of drug, 2024
- Generic132 claims83%
- Brand-name and other28 claims18%
Dr. Chiou'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.
Drug classes CMS tracks in Dr. Chiou's Part D claims, 2024
- Opioids8%12 of 160 claims
- Antibiotics14%22 of 160 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 682024: 2760%
Drugs named by CMS: 2 in 2024, 5 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. Chiajin Chiou scored 87 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Dr. Chiou for performance year 2024, reported through an alternative payment model (APM). Dr. Chiou accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Chiou's MIPS scores, performance year 2024
- 87of 100Final score
- 73.5of 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. Chiajin Chiou graduated from Saint Louis University School of Medicine
Dr. Chiou graduated from Saint Louis University School of Medicine in 2010.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Chiajin Chiou'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)Clinician Public Reporting: Overall MIPS Performance (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. Chiajin Chiou
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. Chiajin Chiou's NPI number?
Dr. Chiajin Chiou's NPI number is 1972815413. It was assigned on July 13, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Chiajin Chiou?
Dr. Chiajin Chiou is an internist in Bellevue, Washington. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Chiajin Chiou practice?
Dr. Chiou practices at 1035-116Th Ave NE, Bellevue, WA 98004. Dr. Chiou's primary practice is Overlake Medical Center in Bellevue, Washington, part of MultiCare Health System.
What is Dr. Chiajin Chiou's office phone number?
The practice phone on file for Dr. Chiou is (425) 688-5000.
What is Dr. Chiajin Chiou's medical license number?
Dr. Chiou holds Washington license MD60371422.
Which hospitals is Dr. Chiajin Chiou affiliated with?
Dr. Chiou practices at Overlake Medical Center in Bellevue, Washington.
What medical group is Dr. Chiajin Chiou part of?
Dr. Chiou is linked to Overlake Clinics Cardiology.
Does Dr. Chiajin Chiou accept Medicare?
Yes. CMS data shows Dr. Chiou billed Medicare for 563 services in 2024, and Dr. Chiou accepts Medicare assignment.
What is Dr. Chiajin Chiou's MIPS score?
Dr. Chiou's MIPS final score for performance year 2024 is 87 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Chiajin Chiou see?
CMS counts 167 Medicare patients who saw Dr. Chiou in 2024, with an average age of 84.
Show 4 more questionsShow fewer questions
What services does Dr. Chiajin Chiou bill to Medicare?
In 2024, Dr. Chiou's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99223).
Where did Dr. Chiajin Chiou go to medical school?
Dr. Chiou graduated from Saint Louis University School of Medicine in 2010.
What drugs does Dr. Chiajin Chiou prescribe most?
In 2024 Medicare Part D data, Dr. Chiou's most prescribed drugs by claims were Furosemide and Oxycodone HCl.
How long has Dr. Chiajin Chiou been practicing?
Dr. Chiou graduated from medical school in 2010, 16 years ago.
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