Ian K. Tseng, M.D.
Diagnostic Radiology Physician · Irvine, CA
Ian K. Tseng, M.D. is a diagnostic radiology physician with a practice address in Irvine, California, and NPI 1689949257, issued on Mar 15, 2012. Check the license (California A129394, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ian K. Tseng
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- A129394 CA
25MA09270800 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 17595 Harvard Ave Ste C, Irvine, CA 92614
- Phone
- (949) 870-9996
- Enumerated
- Mar 15, 2012
- Record last updated
- Mar 25, 2025
- Medicaid IDs
- 0347558 NJ
03583906 NY - Medicare enrollment
- Enrolled (PECOS I20150402000818); accepts Medicare assignment
- Medical or professional school
- Miami Medical College, 2007
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Also registered at 17595 Harvard Ave Ste C
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Fortunato Azoulay, M.P.T.Physical Therapist1053560276
- Twila Clark, PH.D.Clinical Psychologist1689927824
Verify Ian K. Tseng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A129394Check 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): 87.7 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 2 group practices
- N W Indiana Radiology Services, PCMerrillville, IN
- Saint Agnes Medical FoundationFresno, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ian K. Tseng among 4,500 diagnostic radiology physician records in California
Ian K. Tseng, M.D. is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 73% of them.
- NPI issued2012 · 73% of these records are older, 24% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2007 · median 2004 among the 3,130 with a school on file
- Record last updated2025 · 60% 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 California 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 California
There are 4,500 diagnostic radiology physician records in California.
All 4,500 in California → Every provider in Irvine → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Joseph Ugorji, D.O.Irvine, CA 926141548492028
- William Feske, MDIrvine, CA 926121689652653
- Ali Forootan, MDIrvine, CA 926121184687816
- Glenn Slocum, M.D.Irvine, CA 926171588614564
- Hiren Dave, MDIrvine, CA 926181316193915
- Bennett Gray, MDIrvine, CA 926181376637132
- Hossein Mehdikhani Karimabad, M.D.Irvine, CA 926181083026041
- Judy Owens, M.D.Irvine, CA 926181366674962
Common questions
What is Ian K. Tseng, M.D.'s NPI number?
Ian K. Tseng, M.D.'s National Provider Identifier (NPI) is 1689949257, issued on Mar 15, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Ian K. Tseng, M.D. located?
The NPPES record lists a practice address at 17595 Harvard Ave Ste C, Irvine, CA, 92614. Phone: (949) 870-9996. Providers update this record themselves, so call before visiting.
How can I verify Ian K. Tseng, M.D.'s license?
NPPES lists California license number A129394, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Ian K. Tseng, M.D.'s MIPS final score?
The 2023 MIPS final score is 87.7 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.