Justin Chen, MD
NPI 1447526066 · Nephrology Physician · Pasadena, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Justin Chen, MD is a Nephrology Physician provider in Pasadena, CA (NPI 1447526066).
Provider details
- NPI number
- 1447526066
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 127264 (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
2,345 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 1,364 | $84 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 368 | $127 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 184 | $143 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 162 | $139 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 92 | $185 |
| Dialysis Services, 2-3 Physician Visits Per Month (20 Years Or Older) |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 82 | 27 |
| Amlodipine Besylate | 69 | 29 |
| Parenteral Amino Acid 20% No.1brand: Prosol | 50 | — |
| Carvedilol | 50 | 16 |
| Furosemide | 49 | 22 |
| Allopurinol | 36 | — |
| Hydralazine Hcl | 36 | 14 |
| Sodium Zirconium Cyclosilicate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-03-28
- Last updated
- 2018-01-29
Frequently asked questions
- What is Justin Chen's NPI number?
- Justin Chen's National Provider Identifier (NPI) is 1447526066, 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 Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Justin Chen located?
- Justin Chen's practice location on file with NPPES is 301 S Fair Oaks Ave Ste 405, Pasadena, CA 91105-2562.
- What is Justin Chen's phone number?
- The practice phone number listed in the NPPES registry for Justin Chen is (626) 352-0010.
- 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 (1447526066) is active in the NPPES registry as of the last update on 2018-01-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.