Joo-Yon Youn, M.D.
NPI 1619289139 · Family Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joo-Yon Youn, M.D. is a Family Medicine Physician provider in Los Angeles, CA (NPI 1619289139).
Provider details
- NPI number
- 1619289139
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A110339 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
100% 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 · 100 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 507 | 173 |
| Amlodipine Besylate | 268 | 98 |
| Losartan Potassium | 255 | 83 |
| Rosuvastatin Calcium | 207 | 75 |
| Metformin Hclbrand: Metformin Hcl Er | 195 | 71 |
| Levothyroxine Sodium | 167 | 55 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-07-13
- Last updated
- 2023-03-07
- Certified
- 2021-12-03
Frequently asked questions
- What is Joo-Yon Youn's NPI number?
- Joo-Yon Youn's National Provider Identifier (NPI) is 1619289139, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joo-Yon Youn's specialty?
- Joo-Yon Youn is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joo-Yon Youn located?
- Joo-Yon Youn's practice location on file with NPPES is 4950 Sunset Blvd., Los Angeles, CA 90027.
- What is Joo-Yon Youn's phone number?
- The practice phone number listed in the NPPES registry for Joo-Yon Youn is (323) 783-4516.
- Does Joo-Yon Youn accept Medicare?
- Joo-Yon Youn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joo-Yon Youn's NPI active?
- Yes — Joo-Yon Youn's NPI (1619289139) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.