JOONUN CHOI MD
NPI 1053583914
Internal Medicine - Cardiovascular Disease in Stamford, CT
About Joonun Choi Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOONUN CHOI MD (NPI 1053583914) is an individual cardiovascular disease provider in Stamford, Connecticut, licensed in Connecticut (046302) and active in the NPI registry since March 2008. He is enrolled in Medicare PECOS and is a graduate of New York Medical College (2001).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Joonun Choi Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Joonun Choi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Stamford, CT 06907
- Reassigned Medicare billing, Connecticut enrollment
- 496 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 17
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 06902 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
STAMFORD, CT 06902
STAMFORD, CT 06902
STAMFORD, CT 06902
STAMFORD, CT 06902
STAMFORD, CT 06902
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Joonun Choi's NPI number?
The NPI number for Joonun Choi is 1053583914. It was assigned to this individual provider in the NPPES registry on March 31, 2008. The provider is also known as Chris Choi MD.
Where is Joonun Choi located?
Joonun Choi practices at 29 Hospital Plaza Suite 502, Stamford, CT 06902. The listed phone number is (203) 348-7410.
What is Joonun Choi's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Joonun Choi enrolled in Medicare?
Yes. Joonun Choi is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Joonun Choi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joonun Choi reassigns Medicare benefits to Stamford Health Medical Group Inc (Stamford, CT). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Joonun Choi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Joonun Choi accept?
Health plans from Anthem Blue Cross and Blue Shield list Joonun Choi as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Joonun Choi was last updated on December 30, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Joonun Choi, MD · NPI 1053583914
Cardiovascular Disease physician in Stamford, Connecticut. Individual provider, active in the CMS NPPES registry since March 31, 2008.
## Identity
- **NPI:** 1053583914 (Entity type: Individual)
- **Enumerated:** March 31, 2008
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** 046302 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 29 HOSPITAL PLAZA, SUITE 502, Stamford, CT 06902-3602
- **Phone:** (203) 348-7410 · **Fax:** (203) 961-8488
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Stamford Health Medical Group Inc (NPI 1154633980, Stamford, CT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York Medical College, class of 2001
## Record status
- **NPPES last updated:** December 30, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1053583914) · Data from the CMS NPPES public registry.