Diabetes Mellitus, Type 2Folic AcidHypoglycemic Agents
Dr. Dat Tan Huynh, MD
NPI1033298963PAC ID0840465043
- Medicare services, 2024
- 1,836
- Medicare patients, 2024
- 160
- Part D claims, 2024
- 9,202
- Publications
- 3
- Industry payments
- $20,156
- Practice address
- 227 N Jackson Ave, San Jose, CA 95116
- Practice phone
- Call (408) 279-2377
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
One Health Medical Foundation
San Jose, California
Find Dr. Huynh'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. Dat Tan Huynh is an internist in San Jose, California
Dr. Huynh practices at One Health Medical Foundation in San Jose, California.
Dr. Huynh's NPI, 1033298963, was assigned on November 2, 2006. Dr. Huynh graduated from Ho Chi Minh City Medicine and Pharmacy University in 1970. Dr. Huynh's California license number on file is A500710.
NPI and contact details
- NPI
- 1033298963NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0840465043
- NPI enumeration date
- November 2, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (408) 279-2377
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 82
- Medical school graduation
- 1970
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Dat Tan Huynh practices at One Health Medical Foundation in San Jose, California
Dr. Huynh's primary practice is One Health Medical Foundation, at 227 N Jackson Ave, San Jose, CA 95116 in Santa Clara County. The practice phone is (408) 279-2377.
- One Health Medical Foundation227 N Jackson Ave, San Jose, CA 95116 · Santa Clara CountyPhone(408) 279-2377
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Dat Tan Huynh is affiliated with 2 sites of care and 1 medical group
Dr. Huynh's primary practice is One Health Medical Foundation in San Jose, California. The medical group on file is One Health Primary Care. Dmand AI also links Dr. Huynh to 1 more group practice or clinic, named with a free account.
One Health Medical FoundationPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Dat Tan Huynh's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Huynh practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| One Health Medical Foundation | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every site where Dr. Huynh practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Dat Tan Huynh is one of 16,751 internists in California
Internal medicine is Dr. Huynh's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Huynh's licenses on file in 2 states: California and Florida.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Florida license
Clinical focus
Dmand AI lists alzheimer's disease, arthritis, asthma, atrial fibrillation and flutter, bladder disease, chronic diabetes, chronic hypertension and chronic kidney disease among the conditions Dr. Huynh treats.
Internists near Dr. Huynh
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. Dat Tan Huynh billed Medicare for 1,836 services in 2024
CMS data shows 1,836 Medicare services from Dr. Huynh across 14 procedure codes in 2024, for 160 Medicare patients. Medicare paid $105,357 for them. Every service was in an office.
Medicare services, 20241,836
Medicare patients160
Paid by Medicare$105,357
Procedure codes14
Dr. Huynh's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4152024: 1,024147%
- Other services
- 2023: 4582024: 78872%
- Tests and treatments
- 2023: 452024: 2447%
Dr. Huynh compared with the California median for internists, 2024
- Dr. Huynh
- California median
- Medicare services
- 1,836vs 3615.1 times
- Medicare patients
- 160vs 1516% above
- Part D claims
- 8,786vs 42120.9 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Huynh'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.
Need commercial claims for Dr. Huynh?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Huynh and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Dat Tan Huynh treated 160 Medicare patients in 2024, average age 74
CMS counts 160 Medicare patients who saw Dr. Huynh in 2024. The largest group is 65 to 74, with 80 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.12, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Huynh's median patient age at 67, with 52% women.
Medicare patients, 2024160
Average age74
Average risk score1.12
Dr. Huynh's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Huynh's Medicare patients by sex, 2024
- Women8251%
- Men7849%
Chronic conditions among Dr. Huynh's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes43%
- Arthritis21%
- Chronic kidney disease18%
- Ischemic heart disease18%
- Osteoporosis14%
- Heart failure9%
Share of Medicare patients with each condition. A patient can have several.
Dr. Huynh'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
- Women52%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Dat Tan Huynh wrote 9,202 Medicare Part D claims in 2024
In 2024, Dr. Huynh wrote 9,202 Medicare Part D claims for 432 patients. 81% of them were for generic drugs. CMS names the drug for 8,786 of them, across 95 drugs with 11 or more claims each, at $1,221,283 in total drug cost. In 2023, CMS named 7,389 claims across 95 drugs.
Part D claims, 20249,202
Drugs named by CMS95
Total drug cost$1.2M
Part D patients432
Dr. Huynh's Part D claims by kind of drug, 2024
- Generic7,496 claims81%
- Brand-name1,666 claims18%
- Other40 claims0%
Dr. Huynh'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 Dr. Huynh's Part D claims, 2024
- Antibiotics2%201 of 9,202 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: 7,3892024: 8,78619%
Drugs named by CMS: 95 in 2024, 95 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
Dr. Dat Tan Huynh offers telehealth to Medicare patients
Dr. Huynh accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Huynh as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Find internists like Dr. Huynh by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Dat Tan Huynh has 3 publications on record
Dmand AI links 3 papers to Dr. Huynh, published from 2014 to 2024.
Papers3
Years published2014 to 2024
Recent publications by Dr. Huynh
AlgorithmsHealth Care CostsHIV Infections
See who Dr. Huynh researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Huynh works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Dat Tan Huynh received $20,156 in industry payments from 2016 to 2025
CMS Open Payments shows 319 general payments to Dr. Huynh from 38 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $3,191.
General payments to Dr. Huynh by program year, 2016 to 2025
General payments to Dr. Huynh by kind, 2016 to 2025
$20.2Kin total
- Food and beverage$20,142100%
- Education$140%
Companies that paid Dr. Huynh the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Dat Tan Huynh graduated from Ho Chi Minh City Medicine and Pharmacy University
Dr. Huynh graduated from Ho Chi Minh City Medicine and Pharmacy University in 1970.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Dat Tan Huynh accepts plans from 15 insurance carriers
Dr. Huynh is in network with 15 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +7 more carriersWith a free account
Plan types Dr. Huynh accepts, by number of carriers
- Medicare9
- PPO9
- HMO6
- POS5
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Dat Tan Huynh'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 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) |
| 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. Dat Tan Huynh
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. Dat Tan Huynh's NPI number?
Dr. Dat Tan Huynh's NPI number is 1033298963. It was assigned on November 2, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Dat Tan Huynh?
Dr. Dat Tan Huynh is an internist in San Jose, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Dat Tan Huynh practice?
Dr. Huynh practices at 227 N Jackson Ave, San Jose, CA 95116. Dr. Huynh's primary practice is One Health Medical Foundation in San Jose, California. Dmand AI also links Dr. Huynh to 1 group practice or clinic.
What is Dr. Dat Tan Huynh's office phone number?
The practice phone on file for Dr. Huynh is (408) 279-2377.
What is Dr. Dat Tan Huynh's medical license number?
Dr. Huynh's California license number on file is A500710, one of the licenses on file in 2 states.
Which states has Dr. Dat Tan Huynh been licensed in?
Dmand AI has state licenses on file for Dr. Huynh in California (1991 to 2025) and Florida (1984 to 2010).
What medical group is Dr. Dat Tan Huynh part of?
Dr. Huynh is linked to One Health Primary Care.
Does Dr. Dat Tan Huynh accept Medicare?
Yes. CMS data shows Dr. Huynh billed Medicare for 1,836 services in 2024, and Dr. Huynh accepts Medicare assignment.
Does Dr. Dat Tan Huynh offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Huynh as offering telehealth services.
How many Medicare patients does Dr. Dat Tan Huynh see?
CMS counts 160 Medicare patients who saw Dr. Huynh in 2024, with an average age of 74.
Show 7 more questionsShow fewer questions
What services does Dr. Dat Tan Huynh bill to Medicare?
In 2024, Dr. Huynh's most billed Medicare services were office visit, established patient (99213), medicare service (G2211) and office visit, established patient (99214).
Where did Dr. Dat Tan Huynh go to medical school?
Dr. Huynh graduated from Ho Chi Minh City Medicine and Pharmacy University in 1970.
What drugs does Dr. Dat Tan Huynh prescribe most?
In 2024 Medicare Part D data, Dr. Huynh's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Losartan Potassium.
Has Dr. Dat Tan Huynh received payments from drug or device companies?
CMS Open Payments shows $20,156 in general payments to Dr. Huynh from 38 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Dat Tan Huynh been practicing?
Dr. Huynh graduated from medical school in 1970, 56 years ago.
Does Dr. Dat Tan Huynh do research?
Dmand AI links 3 publications to Dr. Huynh, published from 2014 to 2024.
What insurance does Dr. Dat Tan Huynh accept?
Dr. Huynh is in network with 15 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
Selling to internal medicine practices?
See internists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card