Khai Nguyen, M.D., M.H.S.
NPI 1104067230 · Internal Medicine Physician · La Jolla, CA
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Khai Nguyen, M.D., M.H.S. is a Internal Medicine Physician provider in La Jolla, CA (NPI 1104067230).
Provider details
- NPI number
- 1104067230
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., M.H.S.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A102172 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
857 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| 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 | 357 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 228 | $92 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 143 | $106 |
| Residence Visit for Established Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 60 Minutes99350 | 26 | $132 |
| Administration of Influenza Virus VaccineG0008 | 24 | $35 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 76 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 268 | 70 |
| Levothyroxine Sodium | 250 | 57 |
| Atorvastatin Calcium | 240 | 72 |
| Tamsulosin Hcl | 137 | 33 |
| Losartan Potassium | 137 | 35 |
| Lisinopril | 120 | 34 |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-03-19
- Last updated
- 2009-09-30
Frequently asked questions
- What is Khai Nguyen's NPI number?
- Khai Nguyen's National Provider Identifier (NPI) is 1104067230, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Khai Nguyen's specialty?
- Khai Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Khai Nguyen located?
- Khai Nguyen's practice location on file with NPPES is 10666 N Torrey Pines Rd, La Jolla, CA 92037-1027.
- What is Khai Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Khai Nguyen is (858) 554-9500.
- Does Khai Nguyen accept Medicare?
- Khai Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Khai Nguyen's NPI active?
- Yes — Khai Nguyen's NPI (1104067230) is active in the NPPES registry as of the last update on 2009-09-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.