George Yen, MD
NPI 1841575990 · Internal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
George Yen, MD is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1841575990).
Provider details
- NPI number
- 1841575990
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A122358 (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
14 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
529 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 180 | $103 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 62 | $141 |
| Blood Test, Clotting Time85610 | 61 | $4 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 45 | $88 |
| 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 | 45 | $17 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent Visit |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 284 | 74 |
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 137 | 15 |
| Amlodipine Besylate | 111 | 34 |
| Losartan Potassium | 52 | 15 |
| Rosuvastatin Calcium | 49 | 18 |
| Hydrochlorothiazide | 43 | — |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-10-19
- Last updated
- 2014-09-24
Frequently asked questions
- What is George Yen's NPI number?
- George Yen's National Provider Identifier (NPI) is 1841575990, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is George Yen's specialty?
- George Yen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is George Yen located?
- George Yen's practice location on file with NPPES is 200 Ucla Medical Plz Ste 365a365b, Los Angeles, CA 90095-8344.
- What is George Yen's phone number?
- The practice phone number listed in the NPPES registry for George Yen is (310) 206-0644.
- Does George Yen accept Medicare?
- George Yen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is George Yen's NPI active?
- Yes — George Yen's NPI (1841575990) is active in the NPPES registry as of the last update on 2014-09-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.