CHARLES YI
NPI 1407506744
Internal Medicine in South Bend, IN
About Charles Yi NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHARLES YI (NPI 1407506744) is an individual internal medicine provider in South Bend, Indiana, licensed in Indiana (01100618A) and active in the NPI registry since March 2022. He is enrolled in Medicare PECOS, maintains a secondary practice location in Elkhart, and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 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
Charles Yi 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 Reassignments
6Medicare enrollment records show Charles Yi reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Citronelle, AL 36522
- Reassigned Medicare billing, Alabama enrollment
- 59 clinicians in this Medicare group
Saraland, AL 36571
- Reassigned Medicare billing, Alabama enrollment
- 54 clinicians in this Medicare group
Semmes, AL 36575
- Reassigned Medicare billing, Alabama enrollment
- 92 clinicians in this Medicare group
Mobile, AL 36617
- Reassigned Medicare billing, Alabama enrollment
- 857 clinicians in this Medicare group
Mobile, AL 36607
- Reassigned Medicare billing, Alabama enrollment
- 144 clinicians in this Medicare group
Mobile, AL 36608
- Reassigned Medicare billing, Alabama enrollment
- 90 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 4
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 46601 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 13
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SOUTH BEND, IN 46601
SOUTH BEND, IN 46601
SOUTH BEND, IN 46601
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 Charles Yi's NPI number?
The NPI number for Charles Yi is 1407506744. It was assigned to this individual provider in the NPPES registry on March 28, 2022.
Where is Charles Yi located?
Charles Yi practices at 615 N Michigan St Fl 1, South Bend, IN 46601. The listed phone number is (574) 647-3050.
What is Charles Yi's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Charles Yi enrolled in Medicare?
Yes. Charles Yi 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 organizations bill Medicare for Charles Yi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Charles Yi reassigns Medicare benefits to 6 organizations: Gmuc Of Citronelle LLC (Citronelle, AL), Gmuc Of Saraland (Saraland, AL), Greater Mobile Urgent Care (Semmes, AL), Usa Health Physician Billing Services LLC (Mobile, AL), Inpatient Consultants Of Alabama, Inc (Mobile, AL) and 1 more organization, listed in the Medicare section above. Each 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 Charles Yi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Charles Yi accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter of Alabama and Ambetter of Tennessee and 2 other insurers list Charles Yi 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 Charles Yi was last updated on August 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 55 days 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.
# Charles Yi · NPI 1407506744
Internal Medicine physician in South Bend, Indiana. Individual provider, active in the CMS NPPES registry since March 28, 2022.
## Identity
- **NPI:** 1407506744 (Entity type: Individual)
- **Enumerated:** March 28, 2022
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 01100618A (Indiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 615 N MICHIGAN ST FL 1, South Bend, IN 46601-1033
- **Phone:** (574) 647-3050 · **Fax:** (574) 647-1091
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Gmuc Of Citronelle LLC (NPI 1164794343, Citronelle, AL); Gmuc Of Saraland (NPI 1396161758, Saraland, AL); Greater Mobile Urgent Care (NPI 1275848095, Semmes, AL); Usa Health Physician Billing Services LLC (NPI 1285292912, Mobile, AL); Inpatient Consultants Of Alabama, Inc (NPI 1235238916, Mobile, AL); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** August 31, 2026
- **Other identifiers:** Medicaid 300135546 (IN)
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Source: [NPI Profile](https://npiprofile.com/npi/1407506744) · Data from the CMS NPPES public registry.