Joonun Choi, MD
NPI 1053583914 · Cardiovascular Disease Physician · Stamford, CT
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joonun Choi, MD is a Cardiovascular Disease Physician provider in Stamford, CT (NPI 1053583914).
Provider details
- NPI number
- 1053583914
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 046302 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,144 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 496 | $8 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 369 | $69 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 264 | $121 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 224 | $99 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 130 | $176 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
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 |
|---|---|---|
| Metoprolol Succinate | 212 | 70 |
| Atorvastatin Calcium | 200 | 67 |
| Apixabanbrand: Eliquis | 160 | 49 |
| Amlodipine Besylate | 160 | 50 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 84 | 26 |
| Furosemide | 80 | 31 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$220 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-03-31
- Last updated
- 2016-12-30
Frequently asked questions
- What is Joonun Choi's NPI number?
- Joonun Choi's National Provider Identifier (NPI) is 1053583914, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joonun Choi's specialty?
- Joonun Choi is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Joonun Choi located?
- Joonun Choi's practice location on file with NPPES is 29 Hospital Plaza, Stamford, CT 06902-3602.
- What is Joonun Choi's phone number?
- The practice phone number listed in the NPPES registry for Joonun Choi is (203) 348-7410.
- Does Joonun Choi accept Medicare?
- Joonun Choi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joonun Choi's NPI active?
- Yes — Joonun Choi's NPI (1053583914) is active in the NPPES registry as of the last update on 2016-12-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.