Dr. Thieu Quang Nguyen, MD
- Medicare services, 2024
- 171
- Medicare patients, 2024
- 173
- Part D claims, 2021
- 78
- MIPS score, 2024
- 79
- Hospital affiliations
- 3
- Practice address
- 1225 Wilshire Boulevard, Los Angeles, CA 90017
- Practice phone
- Call (213) 977-2121
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Nguyen's professional email, personal email and mobile number
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Dr. Thieu Quang Nguyen is an internist in Los Angeles, California
Dr. Nguyen practices at PIH Health Good Samaritan Hospital in Los Angeles, California, part of PIH Health.
Dr. Nguyen's NPI, 1720469919, was assigned on June 12, 2015. Dr. Nguyen holds California license A152506.
- NPI
- 1720469919NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022366087
- NPI enumeration date
- June 12, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (213) 977-2121
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thieu Quang Nguyen practices at PIH Health Good Samaritan Hospital in Los Angeles, California
Dr. Nguyen's primary practice is PIH Health Good Samaritan Hospital, at 1225 Wilshire Boulevard, Los Angeles, CA 90017 in Los Angeles County. The practice phone is (213) 977-2121.
- PIH Health Good Samaritan Hospital1225 Wilshire Boulevard, Los Angeles, CA 90017 · Los Angeles CountyPhone(213) 977-2121
Source: Dmand AI Affiliation Data
Dr. Thieu Quang Nguyen is affiliated with 3 sites of care and 2 medical groups
Dr. Nguyen's primary practice is PIH Health Good Samaritan Hospital in Los Angeles, California, part of PIH Health. Dr. Nguyen is also affiliated with PIH Health Whittier Hospital. The medical group on file is PIH Health Physicians. Dmand AI also links Dr. Nguyen to 1 more hospital and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Thieu Quang Nguyen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nguyen practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| PIH Health Good Samaritan Hospital | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thieu Quang Nguyen is one of 16,751 internists in California
Internal medicine is Dr. Nguyen's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Nguyen is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Nguyen
Counts of internists 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. Thieu Quang Nguyen billed Medicare for 171 services in 2024
CMS data shows 171 Medicare services from Dr. Nguyen across 1 procedure code in 2024, for 173 Medicare patients. Medicare paid $18,322 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Nguyen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 282024: 171511%
Dr. Nguyen compared with the California median for internists, 2024
- Dr. Nguyen
- California median
- Medicare services
- 171vs 36153% below
- Medicare patients
- 173vs 15115% above
- Part D claims
- 78vs 42181% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Nguyen'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thieu Quang Nguyen treated 173 Medicare patients in 2024, average age 75
CMS counts 173 Medicare patients who saw Dr. Nguyen in 2024. The largest group is 65 to 74, with 58 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 91% are also on Medicaid. Their average risk score is 3.74, 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. Nguyen's median patient age at 64, with 39% women.
Dr. Nguyen's Medicare patients by age, 2024
Dr. Nguyen's Medicare patients by sex, 2024
- Women9354%
- Men8046%
Chronic conditions among Dr. Nguyen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes69%
- Chronic kidney disease64%
- Heart failure59%
- Arthritis58%
- Ischemic heart disease55%
- Mood disorders45%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nguyen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women39%
- Men61%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Thieu Quang Nguyen wrote 78 Medicare Part D claims in 2021
In 2021, Dr. Nguyen wrote 78 Medicare Part D claims. They cover 5 drugs, with $1,175 in total drug cost. In 2020, CMS named 126 claims across 7 drugs.
Dr. Nguyen's most prescribed drugs by claims, 2021
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, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 1262021: 7838%
Drugs named by CMS: 5 in 2021, 7 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. Thieu Quang Nguyen scored 79 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 79 out of 100 for Dr. Nguyen for performance year 2024, reported as part of a group. Dr. Nguyen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Nguyen's MIPS scores, performance year 2024
- 79of 100Final score
- 58.7of 100Quality
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Thieu Quang Nguyen received $289 in industry payments from 2019 to 2024
CMS Open Payments shows 16 general payments to Dr. Nguyen from 4 drug and device companies from 2019 to 2024. Food and beverage make up the largest share, 100% of the total. Bristol-Myers Squibb Company paid the most, $129.
General payments to Dr. Nguyen by program year, 2019 to 2024
Companies that paid Dr. Nguyen the most, 2019 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Thieu Quang Nguyen'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 DataDmand AI Org Hierarchy 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Thieu Quang Nguyen
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. Thieu Quang Nguyen's NPI number?
Dr. Thieu Quang Nguyen's NPI number is 1720469919. It was assigned on June 12, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Thieu Quang Nguyen?
Dr. Thieu Quang Nguyen is an internist in Los Angeles, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Thieu Quang Nguyen practice?
Dr. Nguyen practices at 1225 Wilshire Boulevard, Los Angeles, CA 90017. Dr. Nguyen's primary practice is PIH Health Good Samaritan Hospital in Los Angeles, California, part of PIH Health. Dmand AI also links Dr. Nguyen to 1 hospital and 1 medical group.
What is Dr. Thieu Quang Nguyen's office phone number?
The practice phone on file for Dr. Nguyen is (213) 977-2121.
What is Dr. Thieu Quang Nguyen's medical license number?
Dr. Nguyen holds California license A152506.
Which hospitals is Dr. Thieu Quang Nguyen affiliated with?
Dr. Nguyen practices at PIH Health Good Samaritan Hospital in Los Angeles, California. Dr. Nguyen is also affiliated with PIH Health Whittier Hospital. Dmand AI links Dr. Nguyen to 1 more hospital.
What medical group is Dr. Thieu Quang Nguyen part of?
Dr. Nguyen is linked to PIH Health Physicians. Dmand AI links Dr. Nguyen to 1 more medical group.
Does Dr. Thieu Quang Nguyen accept Medicare?
Yes. CMS data shows Dr. Nguyen billed Medicare for 171 services in 2024, and Dr. Nguyen accepts Medicare assignment.
What is Dr. Thieu Quang Nguyen's MIPS score?
Dr. Nguyen's MIPS final score for performance year 2024 is 79 out of 100, reported as part of a group.
How many Medicare patients does Dr. Thieu Quang Nguyen see?
CMS counts 173 Medicare patients who saw Dr. Nguyen in 2024, with an average age of 75.
Show 4 more questionsShow fewer questions
What services does Dr. Thieu Quang Nguyen bill to Medicare?
In 2024, Dr. Nguyen's most billed Medicare services were hospital inpatient care (99222).
What drugs does Dr. Thieu Quang Nguyen prescribe most?
In 2021 Medicare Part D data, Dr. Nguyen's most prescribed drugs by claims were Cefuroxime, Atorvastatin Calcium and Doxycycline Hyclate.
Has Dr. Thieu Quang Nguyen received payments from drug or device companies?
CMS Open Payments shows $289 in general payments to Dr. Nguyen from 4 companies from 2019 to 2024. The largest total came from Bristol-Myers Squibb Company.
How long has Dr. Thieu Quang Nguyen been practicing?
Dr. Nguyen graduated from medical school in 2013, 13 years ago.
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