Yien Chiong, M.D
Endocrinology, Diabetes & Metabolism Physician · Springfield, OR
Yien Chiong, M.D is an endocrinology, diabetes & metabolism physician with a practice address in Springfield, Oregon, and NPI 1205068012, issued on Aug 12, 2009. Check the license (Oregon MD192645, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Yien Chiong
- Credential
- M.D
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- MD192645 OR
53396 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1007 Harlow RD Ste 210, Springfield, OR 97477
- Phone
- (541) 741-0387
- Enumerated
- Aug 12, 2009
- Record last updated
- Sep 20, 2025
- Medicaid ID
- 00427772 CO
- Medicare enrollment
- Enrolled (PECOS I20190820001121); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 104 in Oregon → Look up another NPI →
Also registered at 1007 Harlow RD Ste 210
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Justin Bucci, MDRheumatology Physician1508285099
- Elizabeth Dhungana, CNPFamily Nurse Practitioner1780135939
- Dane Dougherty, M.D.Rheumatology Physician1518251370
- Vipul Lakhani, MDEndocrinology, Diabetes & Metabolism Physician1336150804
- Elizabeth Morrison, DOEndocrinology, Diabetes & Metabolism Physician1740223304
- Cody Wasner, M.D.Rheumatology Physician1245222322
Verify Yien Chiong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD192645Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% more Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
4,632 Medicare Part D claims for 632 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 49% of claims.
Most prescribed
- Ozempic419 claims
- Atorvastatin Calcium374 claims
- Levothyroxine Sodium363 claims
- Lantus Solostar219 claims
- Metformin Hcl Er208 claims
- Metformin Hcl184 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): 95.9 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
- Oregon Healthcare Resources LLCEugene, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Yien Chiong among 104 endocrinology, diabetes & metabolism physician records in Oregon
Yien Chiong, M.D is one of 104 endocrinology, diabetes & metabolism physician records with a practice address in Oregon. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 69% of them.
- NPI issued2009 · 69% of these records are older, 27% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2009 · median 2001 among the 67 with a school on file
- Record last updated2025 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Oregon
There are 104 endocrinology, diabetes & metabolism physician records in Oregon.
All 104 in Oregon → Every provider in Springfield → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- John Bagdade, M.D.Springfield, OR 974771811020415
- Vipul Lakhani, MDSpringfield, OR 974771336150804
- Elizabeth Morrison, DOSpringfield, OR 974771740223304
- Patrick Clyde, MDRoseburg, OR 974711538254941
- Mark BradleyRoseburg, OR 974701427162635
- John Gallen, MDMedford, OR 975041114993656
- Patrick Hungerford, M.D.Medford, OR 975041710169099
- Gina Jones, PACMedford, OR 975041275595811
Common questions
What is Yien Chiong, M.D's NPI number?
Yien Chiong, M.D's National Provider Identifier (NPI) is 1205068012, issued on Aug 12, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Yien Chiong, M.D located?
The NPPES record lists a practice address at 1007 Harlow RD Ste 210, Springfield, OR, 97477. Phone: (541) 741-0387. Providers update this record themselves, so call before visiting.
How can I verify Yien Chiong, M.D's license?
NPPES lists Oregon license number MD192645, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Yien Chiong, M.D prescribe under Medicare Part D?
In 2024, Yien Chiong, M.D had 4,632 Medicare Part D claims for 632 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Yien Chiong, M.D's MIPS final score?
The 2023 MIPS final score is 95.9 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.