Khanh Tan Duong, MD
Internal Medicine Physician · Montclair, CA
Khanh Tan Duong, MD is an internal medicine physician with a practice address in Montclair, California, and NPI 1225528466, issued on May 14, 2018. Check the license (California A174153, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Khanh Tan Duong
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A174153 CA
BP10064981 TX
Self-reported in NPPES; status is on the state search - Practice location
- 9635 Monte Vista Ave Ste 208, Montclair, CA 91763
- Phone
- (909) 255-0199
- Enumerated
- May 14, 2018
- Record last updated
- Feb 25, 2022
- Fax
- (216) 208-1435
- Medicare enrollment
- Enrolled (PECOS I20211129001121); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Khanh Tan Duong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A174153Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
24% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,416 Medicare Part D claims for 290 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 16 claims were for opioids.
Most prescribed
- Atorvastatin Calcium204 claims
- Metformin Hcl120 claims
- Amlodipine Besylate108 claims
- Losartan Potassium101 claims
- Gabapentin79 claims
- Albuterol Sulfate Hfa56 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: $7.10
1 payment: food and beverage; the largest payer was Zoll Services LLC (a/k/a Zoll LifeCor Corp). 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.
Bills Medicare through one group practice
- Hospitalist Medicine Physicians OF California IncApple Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Khanh Tan Duong among 17,696 internal medicine physician records in California
Khanh Tan Duong, MD 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 2018, is newer than 84% of them.
- NPI issued2018 · 84% of these records are older, 14% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2012 · median 2004 among the 11,065 with a school on file
- 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).
12 internal medicine physician records list a practice address in Montclair
They are 12 of the 1,301 NPPES records with a practice address in Montclair, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Montclair → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mohammed Al-Khayyat, M.D.Montclair, CA 917631588195424
- Dion Kencana, MDMontclair, CA 917631528709805
- Sadia Khan, MDMontclair, CA 917631225271125
- George Moran, MDMontclair, CA 917631639673635
- Kiandokht Partovi, M.D.Montclair, CA 917631689763427
- Atif Qadeer, MDMontclair, CA 917631730160201
- Ali Salem, M.D.Montclair, CA 917631376983122
- Jose Santiago, M.D.Montclair, CA 917631790763191
Common questions
What is Khanh Tan Duong, MD's NPI number?
Khanh Tan Duong, MD's National Provider Identifier (NPI) is 1225528466, issued on May 14, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Khanh Tan Duong, MD located?
The NPPES record lists a practice address at 9635 Monte Vista Ave Ste 208, Montclair, CA, 91763. Phone: (909) 255-0199. Providers update this record themselves, so call before visiting.
How can I verify Khanh Tan Duong, MD's license?
NPPES lists California license number A174153, 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 Khanh Tan Duong, MD prescribe under Medicare Part D?
In 2024, Khanh Tan Duong, MD had 2,416 Medicare Part D claims for 290 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.