Ken Duong Nguyen, M.D.
Gastroenterology Physician · Temple City, CA
Ken Duong Nguyen, M.D. is a gastroenterology physician with a practice address in Temple City, California, and NPI 1205193828, issued on Apr 20, 2012. Check the license (California A127222, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ken Duong Nguyen
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A127222 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6271 Rosemead Blvd, Temple City, CA 91780
- Phone
- (626) 898-4560
- Enumerated
- Apr 20, 2012
- Record last updated
- Nov 23, 2023
- Fax
- (626) 898-4561
- Medicare enrollment
- Enrolled (PECOS I20140906000014); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 2012
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 6271 Rosemead Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tien-Chun Chen, MDGastroenterology Physician1396005450
- Andy ChowPsychiatric/Mental Health Nurse Practitioner1336807288
- Unknown Lianna, NPPrimary Care Nurse Practitioner1881415214
Verify Ken Duong Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A127222Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average gastroenterology physician in 2024
1,909 Medicare Part D claims for 542 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium305 claims
- Gavilyte-G173 claims
- Omeprazole164 claims
- Linzess138 claims
- Creon101 claims
- Dexlansoprazole Dr92 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: $33,269.14
170 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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.
Bills Medicare through one group practice
- Genesis Healthcare Partners PCSan Gabriel, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ken Duong Nguyen among 2,140 gastroenterology physician records in California
Ken Duong Nguyen, M.D. is one of 2,140 gastroenterology physician records with a practice address in California. 83% 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 77% of them.
- NPI issued2012 · 77% of these records are older, 20% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2012 · median 2002 among the 1,538 with a school on file
- Record last updated2023 · 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 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Temple City → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Tien-Chun Chen, MDTemple City, CA 917801396005450
- Robert Mehler, M.D.San Gabriel, CA 917761730259243
- Dana Pan, MDSan Gabriel, CA 917761265842934
- Chester Zahn, MDSan Gabriel, CA 917761639146442
- Basim Abdelkarim, MDUpland, CA 917861932217544
- Chuang Hung, M.D.Upland, CA 917861619049749
- Kevin Jenkins, DOUpland, CA 917861730276163
- Camron Kiafar, D.O.Upland, CA 917861831299254
Common questions
What is Ken Duong Nguyen, M.D.'s NPI number?
Ken Duong Nguyen, M.D.'s National Provider Identifier (NPI) is 1205193828, issued on Apr 20, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Ken Duong Nguyen, M.D. located?
The NPPES record lists a practice address at 6271 Rosemead Blvd, Temple City, CA, 91780. Phone: (626) 898-4560. Providers update this record themselves, so call before visiting.
How can I verify Ken Duong Nguyen, M.D.'s license?
NPPES lists California license number A127222, 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 Ken Duong Nguyen, M.D. prescribe under Medicare Part D?
In 2024, Ken Duong Nguyen, M.D. had 1,909 Medicare Part D claims for 542 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.