SEAN CHANG M.D.
NPI 1801108568
Radiology - Neuroradiology in Oxnard, CA
About Sean Chang M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SEAN CHANG M.D. (NPI 1801108568) is an individual neuroradiology provider in Oxnard, California, licensed in California (112950) and active in the NPI registry since July 2010. He is enrolled in Medicare PECOS, is affiliated with University Of Iowa Health Care Medical Center Down, and maintains 8 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 8
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Sean Chang M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
47Medicare enrollment records show Sean Chang reassigns Medicare billing to 47 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oxnard, CA 93036
- Reassigned Medicare billing, California enrollment
- 62 clinicians in this Medicare group
Northridge, CA 91325
- Reassigned Medicare billing, California enrollment
- 224 clinicians in this Medicare group
Arcadia, CA 91006
- Reassigned Medicare billing, California enrollment
- 61 clinicians in this Medicare group
Indian Wells, CA 92210
- Reassigned Medicare billing, California enrollment
- 58 clinicians in this Medicare group
Reno, NV 89503
- Reassigned Medicare billing, California enrollment
- 12 clinicians in this Medicare group
Grants, NM 87020
- Reassigned Medicare billing, New Mexico enrollment
- 144 clinicians in this Medicare group
Albuquerque, NM 87102
- Reassigned Medicare billing, New Mexico enrollment
- 73 clinicians in this Medicare group
Albuquerque, NM 87110
- Reassigned Medicare billing, California enrollment
- 12 clinicians in this Medicare group
Alamogordo, NM 88310
- Reassigned Medicare billing, New Mexico enrollment
- 417 clinicians in this Medicare group
Cheyenne, WY 82009
- Reassigned Medicare billing, California enrollment
- 6 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 40
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Iowa Health Care Medical Center Down
Acute Care Hospitals · Iowa City, IASt Lukes Hospital
Acute Care Hospitals · Cedar Rapids, IACape Cod Hospital
Acute Care Hospitals · Hyannis, MACape Fear Valley Medical Center
Acute Care Hospitals · Fayetteville, NCMedicare 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.
Reported Quality Measures
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.
OXNARD, CA 93036
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 Sean Chang's NPI number?
The NPI number for Sean Chang is 1801108568. It was assigned to this individual provider in the NPPES registry on July 10, 2010.
Where is Sean Chang located?
Sean Chang practices at 1901 Outlet Center Dr Suite 120, Oxnard, CA 93036. The listed phone number is (805) 604-9500.
What is Sean Chang's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Neuroradiology, with taxonomy code 2085N0700X.
Is Sean Chang enrolled in Medicare?
Yes. Sean Chang is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Sean Chang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sean Chang reassigns Medicare benefits to 47 organizations: Palms Imaging Medical Group (Oxnard, CA), Renaissance Imaging Medical Associates, Inc. (Northridge, CA), Radiant Imaging, Inc. (Arcadia, CA), Halo Medical Group (Indian Wells, CA), Radiology Consultants, Ltd. (Reno, NV) and 42 more organizations, 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 Sean Chang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sean Chang accept?
Health plans from Avera Health Plans, Baylor Scott and White Health Plan, Blue Cross Blue Shield of North Dakota, Blue Cross Blue Shield of Wyoming and Blue Cross and Blue Shield of Kansas City and 11 other insurers list Sean 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 Sean Chang affiliated with any hospitals?
According to CMS data, Sean Chang is affiliated with University Of Iowa Health Care Medical Center Down, St Lukes Hospital, Cape Cod Hospital and Cape Fear Valley Medical Center.
When was this NPI record last updated?
The NPPES record for Sean Chang was last updated on October 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.
# Sean Chang, M.D. · NPI 1801108568
Neuroradiology physician in Oxnard, California. Individual provider, active in the CMS NPPES registry since July 10, 2010.
## Identity
- **NPI:** 1801108568 (Entity type: Individual)
- **Enumerated:** July 10, 2010
- **Primary specialty:** Radiology - Neuroradiology · taxonomy 2085N0700X
- **State license:** 112950 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1901 OUTLET CENTER DR, SUITE 120, Oxnard, CA 93036-0663
- **Phone:** (805) 604-9500
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 47 organizations under Medicare reassignment (form CMS-855R): Palms Imaging Medical Group (NPI 1851347272, Oxnard, CA); Renaissance Imaging Medical Associates, Inc. (NPI 1487608931, Northridge, CA); Radiant Imaging, Inc. (NPI 1437583200, Arcadia, CA); Halo Medical Group (NPI 1467506451, Indian Wells, CA); Radiology Consultants, Ltd. (NPI 1285735571, Reno, NV); and 42 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2005
## Record status
- **NPPES last updated:** October 7, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1801108568) · Data from the CMS NPPES public registry.