Chi-Hyun You, M.D.
NPI 1306117064 · Cardiovascular Disease Physician · Harbor City, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chi-Hyun You, M.D. is a Cardiovascular Disease Physician provider in Harbor City, CA (NPI 1306117064).
Provider details
- NPI number
- 1306117064
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 113418 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
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
38 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) |
|---|---|---|
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 27 | $123 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 11 | $71 |
Typical Medicare-allowed amounts for these services range $71–$123 (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 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Dabigatran Etexilate Mesylatebrand: Pradaxa | 300 | 82 |
| Metoprolol Tartrate | 243 | 89 |
| Bisoprolol Fumarate | 240 | 74 |
| Atorvastatin Calcium | 240 | 97 |
| Carvedilol | 138 | 50 |
| Furosemide | 137 | 57 |
| Amlodipine Besylate | 135 | 51 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-01-25
- Last updated
- 2021-11-09
- Certified
- 2021-11-09
Frequently asked questions
- What is Chi-Hyun You's NPI number?
- Chi-Hyun You's National Provider Identifier (NPI) is 1306117064, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chi-Hyun You's specialty?
- Chi-Hyun You is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Chi-Hyun You located?
- Chi-Hyun You's practice location on file with NPPES is 25825 South Vermont Ave., Harbor City, CA 90710.
- What is Chi-Hyun You's phone number?
- The practice phone number listed in the NPPES registry for Chi-Hyun You is (310) 325-5111.
- Does Chi-Hyun You accept Medicare?
- Chi-Hyun You is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chi-Hyun You's NPI active?
- Yes — Chi-Hyun You's NPI (1306117064) is active in the NPPES registry as of the last update on 2021-11-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.