CHOYIN YVONNE CHUNG M.D.
NPI 1326468711
Surgery in Baltimore, MD
About Choyin Yvonne Chung M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHOYIN YVONNE CHUNG M.D. (NPI 1326468711) is an individual surgery provider in Baltimore, Maryland, licensed in Maryland (D0094907) and active in the NPI registry since April 2014. She is enrolled in Medicare PECOS, is affiliated with University Of Maryland Medical Center, and is a graduate of University Of Texas Medical Branch At Galveston (2014).
NPPES Registry Identity
Specialties & Licenses
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
Choyin Yvonne Chung M.d. 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 Choyin Chung reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Baltimore, MD 21201
- Reassigned Medicare billing, Maryland enrollment
- Medicare enrollment name: Shock Trauma Associates PA
- 541 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 5
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Maryland Medical Center
Acute Care Hospitals · Baltimore, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21201 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.
BALTIMORE, MD 21201
BALTIMORE, MD 21201
BALTIMORE, MD 21201
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 Choyin Chung's NPI number?
The NPI number for Choyin Chung is 1326468711. It was assigned to this individual provider in the NPPES registry on April 23, 2014.
Where is Choyin Chung located?
Choyin Chung practices at 22 S Greene St, Baltimore, MD 21201. The listed phone number is (410) 328-9878.
What is Choyin Chung's specialty?
The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.
Is Choyin Chung enrolled in Medicare?
Yes. Choyin Chung 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 Choyin Chung's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Choyin Chung reassigns Medicare benefits to Shock Trauma Associates, P.A. (Baltimore, MD). 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 Choyin Chung's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Choyin Chung affiliated with any hospitals?
According to CMS data, Choyin Chung is affiliated with University Of Maryland Medical Center.
When was this NPI record last updated?
The NPPES record for Choyin Chung was last updated on April 26, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Choyin Yvonne Chung, M.D. · NPI 1326468711
Surgery physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since April 23, 2014.
## Identity
- **NPI:** 1326468711 (Entity type: Individual)
- **Enumerated:** April 23, 2014
- **Primary specialty:** Surgery · taxonomy 208600000X
- **State license:** D0094907 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 22 S GREENE ST, Baltimore, MD 21201-1544
- **Phone:** (410) 328-9878
## 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:** Shock Trauma Associates, P.A. (NPI 1679512909, Baltimore, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Medical Branch At Galveston, class of 2014
## Record status
- **NPPES last updated:** April 26, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1326468711) · Data from the CMS NPPES public registry.