Physician Profile
Unclaimed ProfileAbout CHEN
Based in Mission Viejo, CA, James Benjamin Chen, M.D. is listed in the NPI registry under orthopedic surgery. James graduated from University of California, Geffen School of Medicine in 2015. James is also listed as specialising in orthopaedic adult reconstructive surgery.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What kind of doctor is Dr. Chen?
Dr. Chen is an orthopedic surgeon in Mission Viejo, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “ORTHOPEDIC SURGERY”.
NPI registry
What is Dr. Chen's address?
Dr. Chen is listed at 26401 CROWN VALLEY PKWY STE 101, Mission Viejo, CA 92691. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Chen?
The number on file is (949) 348-4000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Chen's NPI number?
Dr. Chen's National Provider Identifier is 1104210152. 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 Dr. Chen train?
Dr. Chen attended University of California, Geffen School of Medicine, graduating in 2015. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Chen been practising?
Dr. Chen has 11 years experience. Calculated from a graduation year of 2015, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Chen perform?
According to Medicare billing data, Dr. Chen performs procedures including aspiration and/or injection of fluid from large joint, aspiration and/or injection of fluid large joint using ultrasound guidance and replacement of knee joint, both sides of knee; reads or performs imaging such as x-ray of knee, 4 or more views and x-ray of knee, 3 views, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Chen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chen. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (949) 348-4000
- Email not available
Practice Locations
26401 CROWN VALLEY PKWY STE 101
Mission Viejo, CA 92691
Procedures Most Often Billed to Medicare
7,202 services · 2,412 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
204 |
| Aspiration and/or injection of fluid large joint using ultrasound guidance | Procedure | 20611 |
126 |
| Replacement of knee joint, both sides of knee | Procedure | 27447 |
60 |
| Replacement of thigh bone and hip joint with prosthesis | Procedure | 27130 |
50 |
| Computer-assisted surgery for muscle and bone procedure | Procedure | 20985 |
34 |
| X-ray of knee, 4 or more views | Imaging | 73564 |
327 |
| X-ray of knee, 3 views | Imaging | 73562 |
306 |
| X-ray of hip, 2-3 views | Imaging | 73502 |
163 |
| X-ray of hip, 1 view | Imaging | 73501 |
152 |
| Mri scan of leg joint without contrast | Imaging | 73721 |
42 |
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.
Other orthopedic surgeons at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 6
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.
More connections — 30 related providers in 4 groups
Other orthopedic surgeons in Mission Viejo 6
Same specialty, same city.
Trained at University of California, Geffen School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2015 at University of California, Geffen School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Aspiration and/or injection of fluid from large joint 8
Providers in CA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.