Justin Chen, DO
NPI 1629728696 · Student in an Organized Health Care Education/Training Program · Los Angeles, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Justin Chen, DO is a Student in an Organized Health Care Education/Training Program provider in Los Angeles, CA (NPI 1629728696).
Provider details
- NPI number
- 1629728696
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
4 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
12 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 12 | $99 |
Typical Medicare-allowed amounts for these services range $99–$99 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 113 | 49 |
| Amlodipine Besylate | 54 | 29 |
| Losartan Potassium | 47 | 26 |
| Lisinopril | 37 | 22 |
| Levothyroxine Sodium | 29 | 14 |
| Metformin Hcl | 24 | 14 |
| Hydrochlorothiazide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-03-24
- Last updated
- 2025-11-24
- Certified
- 2025-11-24
Frequently asked questions
- What is Justin Chen's NPI number?
- Justin Chen's National Provider Identifier (NPI) is 1629728696, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Justin Chen's specialty?
- Justin Chen is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Justin Chen located?
- Justin Chen's practice location on file with NPPES is 4733 Sunset Blvd, Los Angeles, CA 90027.
- What is Justin Chen's phone number?
- The practice phone number listed in the NPPES registry for Justin Chen is (323) 783-1433.
- Does Justin Chen accept Medicare?
- Justin Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Justin Chen's NPI active?
- Yes — Justin Chen's NPI (1629728696) is active in the NPPES registry as of the last update on 2025-11-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.