Hai T. Nguyen
- Medicare services, 2024
- 23
- Medicare patients, 2024
- 40
- Part D claims, 2024
- 5,438
- Hospital affiliations
- 3
- Industry payments
- $4,887
- Practice address
- 9455 Clairemont Mesa Blvd, San Diego, CA 92123
- Practice phone
- Call (619) 528-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Permanente San Diego Medical Center
San Diego, California
Find Hai Nguyen'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.
Hai T. Nguyen is a cardiologist in San Diego, California
Hai Nguyen practices at Kaiser Permanente San Diego Medical Center in San Diego, California.
Hai Nguyen's NPI, 1821150905, was assigned on December 14, 2006. Hai Nguyen graduated from University of California, San Francisco School of Medicine in 1998. Hai Nguyen holds Hawaii license MD13151.
- NPI
- 1821150905NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2961395728
- NPI enumeration date
- December 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (619) 528-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Hai T. Nguyen practices at Kaiser Permanente San Diego Medical Center in San Diego, California
Hai Nguyen's primary practice is Kaiser Permanente San Diego Medical Center, at 9455 Clairemont Mesa Blvd, San Diego, CA 92123 in San Diego County. The practice phone is (619) 528-5000.
- Kaiser Permanente San Diego Medical Center9455 Clairemont Mesa Blvd, San Diego, CA 92123 · San Diego CountyPhone(619) 528-5000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Hai T. Nguyen is affiliated with 4 sites of care and 1 medical group
Hai Nguyen's primary practice is Kaiser Permanente San Diego Medical Center in San Diego, California. Hai Nguyen is also affiliated with Kaiser Permanente Zion Medical Center. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Hai Nguyen to 2 more hospitals, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Hai T. Nguyen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Hai Nguyen practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente San Diego Medical Center | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Hai T. Nguyen is one of 2,375 cardiologists in California
Cardiovascular disease is Hai Nguyen's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Hai Nguyen is licensed in Hawaii.
Specialties and state licenses
- Cardiovascular disease, HawaiiPrimary
Cardiologists near Hai Nguyen
Counts of cardiologists 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
Hai T. Nguyen billed Medicare for 23 services in 2024
CMS data shows 23 Medicare services from Hai Nguyen across 2 procedure codes in 2024, for 40 Medicare patients. Medicare paid $603 for them.
Hai Nguyen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 212024: 2310%
Where Hai Nguyen's Medicare services took place, 2024
- In an office1252%
- In a facility1148%
Hai Nguyen compared with the California median for cardiologists, 2024
- Hai Nguyen
- California median
- Medicare services
- 23vs 1,56099% below
- Medicare patients
- 40vs 64494% below
- Part D claims
- 5,196vs 1,4103.7 times
Medians across 2,237 cardiologists in California with Dmand AI profiles that report each measure.
Hai 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
Hai T. Nguyen treated 40 Medicare patients in 2024, average age 68
CMS counts 40 Medicare patients who saw Hai Nguyen in 2024. The largest group is 65 to 74, with 25 patients. 75% of them have high blood pressure, and 70% have high cholesterol. 60% are also on Medicaid. Their average risk score is 1.27, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Hai Nguyen's median patient age at 67, with 47% women.
Hai Nguyen's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Hai Nguyen's Medicare patients by sex, 2024
- Women2255%
- Men1845%
Chronic conditions among Hai Nguyen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol70%
- Heart failure45%
- Chronic kidney disease43%
- Diabetes43%
- Ischemic heart disease40%
- Arthritis35%
- Atrial fibrillation33%
Share of Medicare patients with each condition. A patient can have several.
Hai 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 67
Patient panel by sex, all payers
- Women47%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Hai T. Nguyen wrote 5,438 Medicare Part D claims in 2024
In 2024, Hai Nguyen wrote 5,438 Medicare Part D claims for 1,012 patients. 82% of them were for generic drugs. CMS names the drug for 5,196 of them, across 48 drugs with 11 or more claims each, at $897,996 in total drug cost. In 2023, CMS named 4,576 claims across 45 drugs.
Hai Nguyen's Part D claims by kind of drug, 2024
- Generic4,436 claims82%
- Brand-name1,002 claims18%
Hai Nguyen's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Hai Nguyen's Part D claims, 2024
- Antibiotics1%36 of 5,438 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4,5762024: 5,19614%
Drugs named by CMS: 48 in 2024, 45 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Hai T. Nguyen takes part in Medicare
Hai Nguyen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Hai T. Nguyen received $4,887 in industry payments from 2016 to 2025
CMS Open Payments shows 41 general payments to Hai Nguyen from 22 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 69% of the total. Baxter Healthcare paid the most, $1,455.
General payments to Hai Nguyen by program year, 2016 to 2025
General payments to Hai Nguyen by kind, 2016 to 2025
- Food and beverage$3,38769%
- Consulting fees$1,45530%
- Speaker and faculty fees$451%
Companies that paid Hai Nguyen the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Hai T. Nguyen graduated from University of California, San Francisco School of Medicine
Hai Nguyen graduated from University of California, San Francisco School of Medicine in 1998.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Hai T. 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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)Medicare Part D Prescribers - by Provider (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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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 Hai T. 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 Hai T. Nguyen's NPI number?
Hai T. Nguyen's NPI number is 1821150905. It was assigned on December 14, 2006, and it is active in the NPI Registry.
What does Hai T. Nguyen specialize in?
Hai T. Nguyen is a cardiologist in San Diego, California. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Hai T. Nguyen practice?
Hai Nguyen practices at 9455 Clairemont Mesa Blvd, San Diego, CA 92123. Hai Nguyen's primary practice is Kaiser Permanente San Diego Medical Center in San Diego, California. Dmand AI also links Hai Nguyen to 2 hospitals.
What is Hai T. Nguyen's office phone number?
The practice phone on file for Hai Nguyen is (619) 528-5000.
What is Hai T. Nguyen's medical license number?
Hai Nguyen holds Hawaii license MD13151.
Which hospitals is Hai T. Nguyen affiliated with?
Hai Nguyen is affiliated with Kaiser Permanente Zion Medical Center. Dmand AI links Hai Nguyen to 2 more hospitals.
What medical group is Hai T. Nguyen part of?
Hai Nguyen is linked to Southern California Permanente Medical Group.
Does Hai T. Nguyen accept Medicare?
Yes. CMS data shows Hai Nguyen billed Medicare for 23 services in 2024, and Hai Nguyen accepts Medicare assignment.
How many Medicare patients does Hai T. Nguyen see?
CMS counts 40 Medicare patients who saw Hai Nguyen in 2024, with an average age of 68.
What services does Hai T. Nguyen bill to Medicare?
In 2024, Hai Nguyen's most billed Medicare services were heart test or procedure (93010) and heart test or procedure (93306).
Show 4 more questionsShow fewer questions
Where did Hai T. Nguyen go to medical school?
Hai Nguyen graduated from University of California, San Francisco School of Medicine in 1998.
What drugs does Hai T. Nguyen prescribe most?
In 2024 Medicare Part D data, Hai Nguyen's most prescribed drugs by claims were Metoprolol Tartrate, Furosemide and Metoprolol Succinate.
Has Hai T. Nguyen received payments from drug or device companies?
CMS Open Payments shows $4,887 in general payments to Hai Nguyen from 22 companies from 2016 to 2025. The largest total came from Baxter Healthcare.
How long has Hai T. Nguyen been practicing?
Hai Nguyen graduated from medical school in 1998, 28 years ago.
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