Seon K. Tjoe, M.D.
Internal Medicine Physician · Dublin, CA
Seon K. Tjoe, M.D. is an internal medicine physician with a practice address in Dublin, California, and NPI 1346565942, issued on Apr 7, 2010. Check the license (California A124886, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Seon K. Tjoe
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A124886 CA
269259 NY
Self-reported in NPPES; status is on the state search - Practice location
- 4050 Dublin Blvd, Dublin, CA 94568
- Phone
- (925) 875-6100
- Enumerated
- Apr 7, 2010
- Record last updated
- May 28, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20131115000387); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical Branch At Galveston, 2010
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 4050 Dublin Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Carla Antypas, DOFamily Medicine Physician1063096113
Verify Seon K. Tjoe in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A124886Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,411 Medicare Part D claims for 156 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 26 claims were for opioids.
Most prescribed
- Atorvastatin Calcium170 claims
- Amlodipine Besylate95 claims
- Lisinopril86 claims
- Metformin Hcl73 claims
- Levothyroxine Sodium48 claims
- Losartan Potassium37 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.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationFremont, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Seon K. Tjoe among 17,696 internal medicine physician records in California
Seon K. Tjoe, 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 2010, is newer than 63% of them.
- NPI issued2010 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2010 · median 2004 among the 11,065 with a school on file
- Record last updated2020 · 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).
20 internal medicine physician records list a practice address in Dublin
They are 20 of the 2,148 NPPES records with a practice address in Dublin, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Dublin → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kim Benson, M.D.Dublin, CA 945681801948633
- Bryan Chin, DODublin, CA 945681972756237
- Tulika Ghosh, MDDublin, CA 945681902102726
- Kanwalpreet Hundal, MDDublin, CA 945681386828242
- Andal Kadambi, MDDublin, CA 945681821150863
- Damayanthi Kalisetti, MDDublin, CA 945681205813532
- Jacqueline Keedy, M.D.Dublin, CA 945681760612931
- Natasha Phan, MDDublin, CA 945681669406005
Common questions
What is Seon K. Tjoe, M.D.'s NPI number?
Seon K. Tjoe, M.D.'s National Provider Identifier (NPI) is 1346565942, issued on Apr 7, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Seon K. Tjoe, M.D. located?
The NPPES record lists a practice address at 4050 Dublin Blvd, Dublin, CA, 94568. Phone: (925) 875-6100. Providers update this record themselves, so call before visiting.
How can I verify Seon K. Tjoe, M.D.'s license?
NPPES lists California license number A124886, 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 Seon K. Tjoe, M.D. prescribe under Medicare Part D?
In 2024, Seon K. Tjoe, M.D. had 1,411 Medicare Part D claims for 156 beneficiaries; 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.