Dat Huynh, M.D.
NPI 1033298963 · Internal Medicine Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dat Huynh, M.D. is a Internal Medicine Physician provider in San Jose, CA (NPI 1033298963).
Provider details
- NPI number
- 1033298963
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A500710 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,836 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 353 | $110 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 342 | $19 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 163 | $155 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, First 20 Minutes99457 | 133 | $61 |
| Advance Care Planning, First 30 Minutes99497 | 122 | $96 |
| Annual Alcohol Misuse Screening, 5 to 15 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 95 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 984 | 287 |
| Amlodipine Besylate | 806 | 242 |
| Losartan Potassium | 556 | 172 |
| Empagliflozinbrand: Jardiance | 357 | 57 |
| Triamcinolone Acetonide | 355 | 141 |
| Famotidine | 303 | 93 |
| Omeprazole | 265 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,331 across 53 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-02
- Last updated
- 2007-08-20
Frequently asked questions
- What is Dat Huynh's NPI number?
- Dat Huynh's National Provider Identifier (NPI) is 1033298963, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dat Huynh's specialty?
- Dat Huynh is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Dat Huynh located?
- Dat Huynh's practice location on file with NPPES is 1661 Burdette Dr, San Jose, CA 95121-1613.
- What is Dat Huynh's phone number?
- The practice phone number listed in the NPPES registry for Dat Huynh is (408) 270-4582.
- Does Dat Huynh accept Medicare?
- Dat Huynh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dat Huynh's NPI active?
- Yes — Dat Huynh's NPI (1033298963) is active in the NPPES registry as of the last update on 2007-08-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.