DR. JOSEPH YUN JO CHANG MD
NPI 1417968256
Internal Medicine - Gastroenterology in Denver, CO
About Dr. Joseph Yun Jo Chang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOSEPH YUN JO CHANG MD (NPI 1417968256) is an individual gastroenterology provider in Denver, Colorado, licensed in Colorado (DR.0070441) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Altru Hospital, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
Other Identifiers 3
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
Dr. Joseph Yun Jo Chang 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 Joseph Chang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Grand Forks, ND 58201
- Reassigned Medicare billing, North Dakota enrollment
- 701 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 6
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.
Altru Hospital
Acute Care Hospitals · Grand Forks, NDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 80204 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DENVER, CO 80204
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 Joseph Chang's NPI number?
The NPI number for Joseph Chang is 1417968256. It was assigned to this individual provider in the NPPES registry on August 10, 2006.
Where is Joseph Chang located?
Joseph Chang practices at 777 Bannock St # Mc3240, Denver, CO 80204. The listed phone number is (303) 436-6000.
What is Joseph Chang's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Joseph Chang enrolled in Medicare?
Yes. Joseph Chang 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 Joseph Chang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Chang reassigns Medicare benefits to Altru Health System (Grand Forks, ND). 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 Joseph Chang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Joseph Chang accept?
Health plans from Blue Cross Blue Shield of North Dakota list Joseph Chang 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.
Is Joseph Chang affiliated with any hospitals?
According to CMS data, Joseph Chang is affiliated with Altru Hospital.
When was this NPI record last updated?
The NPPES record for Joseph Chang was last updated on August 9, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. Joseph Yun Jo Chang, MD · NPI 1417968256
Gastroenterology physician in Denver, Colorado. Individual provider, active in the CMS NPPES registry since August 10, 2006.
## Identity
- **NPI:** 1417968256 (Entity type: Individual)
- **Enumerated:** August 10, 2006
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** DR.0070441 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 777 BANNOCK ST # MC3240, Denver, CO 80204-4507
- **Phone:** (303) 436-6000
## 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:** Altru Health System (NPI 1043309552, Grand Forks, ND), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2005
## Record status
- **NPPES last updated:** August 9, 2023
- **Other identifiers:** Other 0280278 (WA); Medicaid 9000214279 (CO); Medicaid 2013233 (WA)
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Source: [NPI Profile](https://npiprofile.com/npi/1417968256) · Data from the CMS NPPES public registry.