James Chung-Ming Tsai, MD
Diagnostic Radiology Physician · Portland, OR
James Chung-Ming Tsai, MD is a diagnostic radiology physician with a practice address in Portland, Oregon, and NPI 1164409868, issued on Dec 23, 2005. Check the license (Oregon MD23999, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- James Chung-Ming Tsai
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- MD23999 OR
Self-reported in NPPES; status is on the state search - Practice location
- 545 NE 47TH Ave, Portland, OR 97213
- Phone
- (503) 731-2900
- Enumerated
- Dec 23, 2005
- Record last updated
- Oct 15, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid IDs
- 286677 OR
8322828 WA - Medicare enrollment
- Enrolled (PECOS I20040430000370); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 1996
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 522 in Oregon → Look up another NPI →
Also registered at 545 NE 47TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify James Chung-Ming Tsai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD23999Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 91.6 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).
Industry payments in 2024: $122.71
1 payment: food and beverage; the largest payer was Emd Serono, Inc. The 8,048 providers of this specialty with any payment received $2,488.38 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.
Bills Medicare through 2 group practices
- Radiology Specialists OF The Northwest PCPortland, OR
- The Oregon Clinic, PCPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Chung-Ming Tsai among 522 diagnostic radiology physician records in Oregon
James Chung-Ming Tsai, MD is one of 522 diagnostic radiology physician records with a practice address in Oregon. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1996 · median 2005 among the 334 with a school on file
- Record last updated2007 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in Oregon
There are 522 diagnostic radiology physician records in Oregon.
All 522 in Oregon → Every provider in Portland → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Deborah Arnold, MDPortland, OR 972131063429991
- Charles Croteau, D.O.Portland, OR 972131518183284
- James Hasenauer, M.D.Portland, OR 972131669422416
- Ronald Kizziar, MDPortland, OR 972131316924046
- David Klipper, DOPortland, OR 972131598851396
- Richard Koesel, MDPortland, OR 972131275572133
- Jozsef Lukacs, MDPortland, OR 972131164406989
- Michael Neuman, MDPortland, OR 972131316924053
Common questions
What is James Chung-Ming Tsai, MD's NPI number?
James Chung-Ming Tsai, MD's National Provider Identifier (NPI) is 1164409868, issued on Dec 23, 2005. An NPI identifies a provider in billing; it is not a license.
Where is James Chung-Ming Tsai, MD located?
The NPPES record lists a practice address at 545 NE 47TH Ave, Portland, OR, 97213. Phone: (503) 731-2900. Providers update this record themselves, so call before visiting.
How can I verify James Chung-Ming Tsai, MD's license?
NPPES lists Oregon license number MD23999, 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.
What is James Chung-Ming Tsai, MD's MIPS final score?
The 2023 MIPS final score is 91.6 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.