Physician Profile
Sean Chang, M.D.
Unclaimed ProfileAbout Dr. Chang
Sean Chang, M.D. is a healthcare provider in Oxnard, CA specializing in nuclear medicine. Sean trained at University of California, Geffen School of Medicine, graduating in 2005. Sean is also listed as specializing in diagnostic radiology. According to Medicare claims data, Sean cared for 1,195 Medicare patients across 19,128 services. The services billed most often include injection, gadobutrol, 0.1 ml, low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml, and mri scan of brain before and after contrast.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (805) 604-9500
- Email not available
Practice Locations
1901 OUTLET CENTER DR SUITE 120
Oxnard, CA 93036
6000 Hospital Dr
Hannibal, MO 63401
701 W Forevergreen Rd
North Liberty, IA 52317
1470 Sugarland Dr Ste 1
Sheridan, WY 82801
1401 W 5th St
Sheridan, WY 82801
200 Hawkins Dr
Iowa City, IA 52242
2305 37th Ave SW
Minot, ND 58701
500 E Market St
Iowa City, IA 52245
Procedures Most Often Billed to Medicare
19,128 services · 1,195 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Fine needle aspiration biopsy using ultrasound guidance, first growth | Procedure | 10005 |
22 | Too few peers to compare |
| Mri scan of brain before and after contrast | Imaging | 70553 |
108 | As often as other peers in Nuclear Medicine |
| Ultrasound scan of head and neck soft tissue | Imaging | 76536 |
90 | More often than most peers in Nuclear Medicine |
| X-ray of chest, 1 view | Imaging | 71045 |
90 | Less often than most peers in Nuclear Medicine |
| Mri scan of lower spinal canal without contrast | Imaging | 72148 |
76 | As often as other peers in Nuclear Medicine |
| Complete ultrasound scan behind abdominal cavity | Imaging | 76770 |
74 | More often than most peers in Nuclear Medicine |
| Complete ultrasound scan of abdomen | Imaging | 76700 |
71 | More often than most peers in Nuclear Medicine |
| Ct scan head or brain without contrast | Imaging | 70450 |
68 | Less often than most peers in Nuclear Medicine |
| Mri scan of brain without contrast | Imaging | 70551 |
59 | Less often than most peers in Nuclear Medicine |
| Limited ultrasound scan of joint or other extremity structure except blood vessels | Imaging | 76882 |
51 | Too few peers to compare |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Trained at University of California, Geffen School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 2005 at University of California, Geffen School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Fine needle aspiration biopsy using ultrasound guidance, first growth 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Sean Chang?
Sean Chang is a nuclear medicine in Oxnard, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Sean Chang's address?
Sean Chang is listed at 1901 Outlet Center Dr Suite 120, Oxnard, CA 93036. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Sean Chang?
The number on file is (805) 604-9500. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Sean Chang's NPI number?
Sean Chang's National Provider Identifier is 1801108568. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Sean Chang train?
Sean Chang attended University of California, Geffen School of Medicine, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How long has Sean Chang been practicing?
Sean Chang has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What procedures does Sean Chang perform?
According to Medicare billing data, Sean Chang performs procedures including fine needle aspiration biopsy using ultrasound guidance, first growth; reads or performs imaging such as mri scan of brain before and after contrast and ultrasound scan of head and neck soft tissue; provides treatments such as ultrasound study of arm or leg veins with compression and maneuvers and ultrasound study of one arm or leg veins with compression and maneuvers. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Sean Chang confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Sean Chang. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.