Thanh Gia Phung, M.D.
Diagnostic Radiology Physician · Tustin, CA
Thanh Gia Phung, M.D. is a diagnostic radiology physician with a practice address in Tustin, California, and NPI 1952315319, issued on Jul 28, 2006. Check the license (California C42348, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thanh Gia Phung
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- C42348 CA
Self-reported in NPPES; status is on the state search - Practice location
- 661 W 1St St Ste G, Tustin, CA 92780
- Phone
- (714) 665-9890
- Enumerated
- Jul 28, 2006
- Record last updated
- Oct 22, 2025
- Fax
- (714) 665-9891
- Medicaid ID
- 00C423480 CA
- Medicare enrollment
- Enrolled (PECOS I20040510000549); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Also registered at 661 W 1St St Ste G
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marlie Abrahams, PA-CPhysician Assistant1639409048
- Denise Aquino, PA-CPhysician Assistant1750988671
- Bernard Bennett, MDInternal Medicine Physician1871568899
- Viktoriya Birger, NP-CFamily Nurse Practitioner1720853153
- Heather Bonnville, PHYSICIAN ASSISTANTPhysician Assistant1770762429
- Robert Borrowdale, M.D.Obstetrics & Gynecology Physician1013958545
Verify Thanh Gia Phung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C42348Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average diagnostic radiology physician in 2024
13 Medicare Part D claims for 12 beneficiaries, against an average of 51 among the 2,711 providers of this specialty who prescribed in Part D.
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 MIPS final score for 2023 (Medicare payment program): 0 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Magnolia Medical Imaging Center Inc A Medical GroupWestminster, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thanh Gia Phung among 4,500 diagnostic radiology physician records in California
Thanh Gia Phung, 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1973 · 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 Tustin → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Harvey Eisenberg, M.D.Tustin, CA 927801972834836
- Huy Le, M.D.Tustin, CA 927801619237468
- Siu-Ming Tam, M.D.Tustin, CA 927801578657292
- Khanh Vu, MDTustin, CA 927801184747040
- Reza Dehdari, M.D.Tustin, CA 927821508024126
- William Birnbaum, MDAnaheim, CA 928011225105745
- Roy Dorman, MDAnaheim, CA 928011366519886
- Zain Lalani, MDAnaheim, CA 928011659931335
Common questions
What is Thanh Gia Phung, M.D.'s NPI number?
Thanh Gia Phung, M.D.'s National Provider Identifier (NPI) is 1952315319, issued on Jul 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thanh Gia Phung, M.D. located?
The NPPES record lists a practice address at 661 W 1St St Ste G, Tustin, CA, 92780. Phone: (714) 665-9890. Providers update this record themselves, so call before visiting.
How can I verify Thanh Gia Phung, M.D.'s license?
NPPES lists California license number C42348, 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.
How much does Thanh Gia Phung, M.D. prescribe under Medicare Part D?
In 2024, Thanh Gia Phung, M.D. had 13 Medicare Part D claims for 12 beneficiaries; the average among diagnostic radiology physician prescribers was 51. Part D covers Medicare prescriptions only.
What is Thanh Gia Phung, M.D.'s MIPS final score?
The 2023 MIPS final score is 0 of 100. 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.