Thomas That Ton, M.D
Internal Medicine Physician · Garden Grove, CA
Thomas That Ton, M.D is an internal medicine physician with a practice address in Garden Grove, California, and NPI 1912018789, issued on Aug 31, 2006. Check the license (California G78428, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thomas That Ton
- Credential
- M.D
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G78428 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7761 Garden Grove Blvd, Garden Grove, CA 92841
- Phone
- (714) 898-8888
- Enumerated
- Aug 31, 2006
- Record last updated
- Mar 1, 2022
- Fax
- (714) 901-7580
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 7761 Garden Grove Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Thomas That Ton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G78428Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
77 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Alprazolam15 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.
Industry payments in 2024: $1,488.22
11 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Thomas That Ton among 17,696 internal medicine physician records in California
Thomas That Ton, M.D is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2022 · 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 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
39 internal medicine physician records list a practice address in Garden Grove
They are 39 of the 4,572 NPPES records with a practice address in Garden Grove, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Garden Grove → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Tinh Tran, MDGarden Grove, CA 928411003879685
- Negin Behazin, MDGarden Grove, CA 928401497076301
- Bryan Choi, MDGarden Grove, CA 928401255525499
- Danh Dan, M.D.Garden Grove, CA 928401790917631
- Edward Ko, M.D.Garden Grove, CA 928401396911798
- Benjamin Navarro, M.D.Garden Grove, CA 928401033208608
- Tiffany Nguyen, M.D.Garden Grove, CA 928401770840530
- Nga Nguyen, M.D.Garden Grove, CA 928401346447984
Common questions
What is Thomas That Ton, M.D's NPI number?
Thomas That Ton, M.D's National Provider Identifier (NPI) is 1912018789, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas That Ton, M.D located?
The NPPES record lists a practice address at 7761 Garden Grove Blvd, Garden Grove, CA, 92841. Phone: (714) 898-8888. Providers update this record themselves, so call before visiting.
How can I verify Thomas That Ton, M.D's license?
NPPES lists California license number G78428, 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 Thomas That Ton, M.D prescribe under Medicare Part D?
In 2024, Thomas That Ton, M.D had 77 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.