Allen Joo, M.D.
NPI 1902000854 · Student in an Organized Health Care Education/Training Program · Sylmar, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Allen Joo, M.D. is a Student in an Organized Health Care Education/Training Program provider in Sylmar, CA (NPI 1902000854).
Provider details
- NPI number
- 1902000854
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- M.D.
- 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 tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 304 | 52 |
| Abiraterone Acetate | 245 | 37 |
| Dexamethasone | 116 | 29 |
| Enzalutamidebrand: Xtandi | 71 | 13 |
| Lenalidomide | 70 | — |
| Prochlorperazine Maleate | 61 | 34 |
| Anastrozole | 47 | 14 |
| Trifluridine/Tipiracil Hclbrand: Lonsurf |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-06-13
- Last updated
- 2021-11-29
- Certified
- 2021-11-29
Frequently asked questions
- What is Allen Joo's NPI number?
- Allen Joo's National Provider Identifier (NPI) is 1902000854, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Allen Joo's specialty?
- Allen Joo 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 Allen Joo located?
- Allen Joo's practice location on file with NPPES is 14445 Olive View Dr, Sylmar, CA 91342-1437.
- What is Allen Joo's phone number?
- The practice phone number listed in the NPPES registry for Allen Joo is (818) 364-3205.
- Does Allen Joo accept Medicare?
- Allen Joo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Allen Joo's NPI active?
- Yes — Allen Joo's NPI (1902000854) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.