Giok Twan Tjoa, M.D.
Diagnostic Radiology Physician · McAllen, TX
Giok Twan Tjoa, M.D. is a diagnostic radiology physician with a practice address in McAllen, Texas, and NPI 1790057107, issued on Jan 31, 2012. Check the license (Texas D 8464, as entered in NPPES) on the Texas Medical Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Giok Twan Tjoa
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- D 8464 TX
Self-reported in NPPES; status is on the state search - Practice location
- 201 E Duke Ave, McAllen, TX 78504
- Phone
- (956) 618-0039
- Enumerated
- Jan 31, 2012
- Record last updated
- Jan 31, 2012 (not updated in 14 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 3,124 in Texas → Look up another NPI →
Verify Giok Twan Tjoa in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license D 8464Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Giok Twan Tjoa among 3,124 diagnostic radiology physician records in Texas
Giok Twan Tjoa, M.D. is one of 3,124 diagnostic radiology physician records with a practice address in Texas. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2012, is newer than 76% of them.
- NPI issued2012 · 76% of these records are older, 22% newer
- In a Medicare fileNo · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 73% of these records are
- Record last updated2012 · 61% 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 Texas 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 Texas
There are 3,124 diagnostic radiology physician records in Texas. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 3,124 in Texas → Every provider in McAllen → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Irwan Gunadi, MDMcAllen, TX 785041801867676
- Allan Kapilivsky, M.D.McAllen, TX 785041962512269
- Ramesh Shah, MDMcAllen, TX 785041013988666
- Edward Tan, MDMcAllen, TX 785041457300758
- Oscar Cano, MDMcAllen, TX 785031770774952
- Kuang-Wei Chang, M.D.McAllen, TX 785031578820866
- Barry Cook, MDMcAllen, TX 785031487858049
- William Martin, M.D.McAllen, TX 785011861571929
Common questions
What is Giok Twan Tjoa, M.D.'s NPI number?
Giok Twan Tjoa, M.D.'s National Provider Identifier (NPI) is 1790057107, issued on Jan 31, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Giok Twan Tjoa, M.D. located?
The NPPES record lists a practice address at 201 E Duke Ave, McAllen, TX, 78504. Phone: (956) 618-0039. Providers update this record themselves, so call before visiting.
How can I verify Giok Twan Tjoa, M.D.'s license?
NPPES lists Texas license number D 8464, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.