Dr. Chi Tonglien Viet, DDS, MD, PhD
- Medicare services, 2024
- 104
- Medicare patients, 2024
- 63
- Part D claims, 2018
- 41
- Publications
- 6
- Hospital affiliations
- 1
- Practice address
- 11092 Anderson St, Loma Linda, CA 92350-1706
- Practice phone
- Call (909) 558-4613
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Loma Linda University School Of Dentistry
Dental practice · Loma Linda, California
Find Dr. Viet's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Chi Tonglien Viet is a surgical oncologist in Loma Linda, California
Dr. Viet practices at Loma Linda University School Of Dentistry in Loma Linda, California.
Dr. Viet's NPI, 1306157094, was assigned on June 28, 2010. Dr. Viet graduated from New York University School of Medicine in 2014. Dr. Viet holds California license A153114.
- NPI
- 1306157094NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3971840760
- NPI enumeration date
- June 28, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 558-4613
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 42
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chi Tonglien Viet practices at Loma Linda University School of Dentistry in Loma Linda, California
Dr. Viet's primary practice is Loma Linda University School of Dentistry, at 11092 Anderson St, Loma Linda, CA 92350-1706. The practice phone is (909) 558-4613.
- Loma Linda University School of Dentistry11092 Anderson St, Loma Linda, CA 92350-1706Phone(909) 558-4613
Source: Dmand AI Affiliation Data
Dr. Chi Tonglien Viet is affiliated with 3 sites of care and 3 medical groups
Dr. Viet's primary practice is Loma Linda University School Of Dentistry in Loma Linda, California. Dr. Viet is also affiliated with Loma Linda University Medical Center. The medical group on file is Loma Linda University Faculty Medical Group (LLUFMG). Dmand AI also links Dr. Viet to 2 more medical groups and 1 group practice or clinic, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Chi Tonglien Viet's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Viet practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Loma Linda University School Of Dentistry | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Chi Tonglien Viet is one of 243 surgical oncologists in California
Surgical oncology is Dr. Viet's primary specialty in the NPI Registry, under taxonomy code 2086X0206X. Dmand AI has Dr. Viet's licenses on file in 2 states: California and Oregon.
Specialties and state licenses
- Surgical oncology, CaliforniaPrimary
- Oregon license
Surgical oncologists near Dr. Viet
Counts of surgical oncologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Chi Tonglien Viet billed Medicare for 104 services in 2024
CMS data shows 104 Medicare services from Dr. Viet across 4 procedure codes in 2024, for 63 Medicare patients. Medicare paid $8,276 for them. Every service was in an office.
Dr. Viet's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 482024: 7352%
- Imaging
- 2023: 372024: 3116%
- Surgery
- 2023: 112024: 0100%
Dr. Viet compared with the California median for surgical oncologists, 2024
- Dr. Viet
- California median
- Medicare services
- 104vs 17240% below
- Medicare patients
- 63vs 11143% below
- Part D claims
- 41vs 2286% above
Medians across 217 surgical oncologists in California with Dmand AI profiles that report each measure.
Dr. Viet's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Viet and other surgical oncologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Chi Tonglien Viet treated 63 Medicare patients in 2024, average age 74
CMS counts 63 Medicare patients who saw Dr. Viet in 2024. The largest group is 65 to 74, with 29 patients. 71% of them have high blood pressure, and 71% have high cholesterol. 29% are also on Medicaid. Their average risk score is 1.70, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Viet's median patient age at 61, with 54% women.
Dr. Viet's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Viet's Medicare patients by sex, 2024
- Women3149%
- Men3251%
Chronic conditions among Dr. Viet's Medicare patients, 2024
- High blood pressure71%
- High cholesterol71%
- Arthritis56%
- Depression29%
- Mood disorders29%
- Diabetes27%
- Osteoporosis27%
- COPD24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Viet's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Chi Tonglien Viet wrote 41 Medicare Part D claims in 2018
In 2018, Dr. Viet wrote 41 Medicare Part D claims. Every claim was for a generic drug. They cover 2 drugs, with $1,250 in total drug cost. In 2017, CMS named 28 claims across 1 drug.
Dr. Viet's most prescribed drugs by claims, 2018
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2017 to 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 282018: 4146%
Drugs named by CMS: 2 in 2018, 1 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. Chi Tonglien Viet ranks in the 71st percentile for melanoma (skin cancer) excision in Medicare
Dr. Viet accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 16 procedures of melanoma (skin cancer) excision by Dr. Viet, more than 71% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Viet ranks in Medicare procedure volume
- Melanoma (skin cancer) excision
- 71st percentile16 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Chi Tonglien Viet has 6 publications on record
Dmand AI links 6 papers to Dr. Viet, published from 2011 to 2024. 2014 was the busiest year, with 2. The most frequent topics are Disease Models, Animal, Mice, Nude and Pain. Dr. Viet's most frequent co-authors are Brian L. Schmidt, DMD, Tien Sy Dong, MD, PhD and Scott Howard Troob, MD.
Dr. Viet's papers by year, 2011 to 2024
Topics Dr. Viet writes about most
- Disease Models, Animal
- Mice, Nude
- Pain
- Pain Measurement
Dr. Viet's most frequent co-authors
- Brian L. Schmidt, DMD4 shared papers
- Tien Sy Dong, MD, PhD1 shared paper
- Scott Howard Troob, MD1 shared paper
Recent publications by Dr. Viet
Acta Neuropathol Commun
Behav Brain Funct
See who Dr. Viet researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Viet works with, so you can find a warm path to the right surgical oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Chi Tonglien Viet received $19,364 in industry payments from 2017 to 2025
CMS Open Payments shows 71 general payments to Dr. Viet from 12 drug and device companies from 2017 to 2025. Honoraria make up the largest share, 43% of the total. KLS-Martin L.P. paid the most, $10,705.
General payments to Dr. Viet by program year, 2017 to 2025
General payments to Dr. Viet by kind, 2017 to 2025
- Honoraria$8,25043%
- Compensation for serving as faculty or as a speaker for a medical education program$5,42028%
- Food and beverage$3,72019%
- Travel and lodging$1,97410%
Companies that paid Dr. Viet the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Chi Tonglien Viet graduated from New York University School of Medicine
Dr. Viet graduated from New York University School of Medicine in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Chi Tonglien Viet accepts plans from 3 insurance carriers
Dr. Viet is in network with 3 carriers, including Blue Cross Blue Shield of Michigan, Molina and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Molina
- CMS Medicare
Plan types Dr. Viet accepts, by number of carriers
- HMO2
- Medicare2
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Chi Tonglien Viet's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Chi Tonglien Viet
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Chi Tonglien Viet's NPI number?
Dr. Chi Tonglien Viet's NPI number is 1306157094. It was assigned on June 28, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Chi Tonglien Viet?
Dr. Chi Tonglien Viet is a surgical oncologist in Loma Linda, California. The primary specialty in the NPI Registry is Surgical Oncology Physician (taxonomy code 2086X0206X).
Where does Dr. Chi Tonglien Viet practice?
Dr. Viet practices at 11092 Anderson St, Loma Linda, CA 92350-1706. Dr. Viet's primary practice is Loma Linda University School Of Dentistry in Loma Linda, California. Dmand AI also links Dr. Viet to 2 medical groups and 1 group practice or clinic.
What is Dr. Chi Tonglien Viet's office phone number?
The practice phone on file for Dr. Viet is (909) 558-4613.
What is Dr. Chi Tonglien Viet's medical license number?
Dr. Viet holds California license A153114, one of the licenses on file in 2 states.
Which states has Dr. Chi Tonglien Viet been licensed in?
Dmand AI has state licenses on file for Dr. Viet in California (2014 to 2027) and Oregon (2017 to 2021).
Which hospitals is Dr. Chi Tonglien Viet affiliated with?
Dr. Viet is affiliated with Loma Linda University Medical Center.
What medical group is Dr. Chi Tonglien Viet part of?
Dr. Viet is linked to Loma Linda University Faculty Medical Group (LLUFMG). Dmand AI links Dr. Viet to 2 more medical groups.
Does Dr. Chi Tonglien Viet accept Medicare?
Yes. CMS data shows Dr. Viet billed Medicare for 104 services in 2024, and Dr. Viet accepts Medicare assignment.
How many Medicare patients does Dr. Chi Tonglien Viet see?
CMS counts 63 Medicare patients who saw Dr. Viet in 2024, with an average age of 74.
Show 8 more questionsShow fewer questions
What services does Dr. Chi Tonglien Viet bill to Medicare?
In 2024, Dr. Viet's most billed Medicare services were office visit, established patient (99214), diagnostic imaging (70355) and office visit, new patient (99205).
Where did Dr. Chi Tonglien Viet go to medical school?
Dr. Viet graduated from New York University School of Medicine in 2014.
What drugs does Dr. Chi Tonglien Viet prescribe most?
In 2018 Medicare Part D data, Dr. Viet's most prescribed drugs by claims were Oxycodone HCl and Ibuprofen.
Has Dr. Chi Tonglien Viet received payments from drug or device companies?
CMS Open Payments shows $19,364 in general payments to Dr. Viet from 12 companies from 2017 to 2025. The largest total came from KLS-Martin L.P.
How long has Dr. Chi Tonglien Viet been practicing?
Dr. Viet graduated from medical school in 2014, 12 years ago.
Does Dr. Chi Tonglien Viet do research?
Dmand AI links 6 publications to Dr. Viet, published from 2011 to 2024.
Who does Dr. Chi Tonglien Viet publish with?
Dr. Viet's most frequent co-authors are Brian L. Schmidt, DMD (4 shared papers), Tien Sy Dong, MD, PhD (1 shared paper) and Scott Howard Troob, MD (1 shared paper).
What insurance does Dr. Chi Tonglien Viet accept?
Dr. Viet is in network with 3 carriers, including Blue Cross Blue Shield of Michigan, Molina and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
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