Physician Profile
Unclaimed ProfileAbout CHEN
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Education & Training
Areas of Expertise
Common questions
What does Dr. Chen specialise in?
Dr. Chen is a radiation oncology in Orange, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “RADIATION ONCOLOGY”.
NPI registry
Where is Dr. Chen located?
Dr. Chen is listed at 101 THE CITY DR S, Orange, CA 92868. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Chen's phone number?
The number on file is (657) 579-3129. 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 1578126124. 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 go to medical school?
Dr. Chen attended Other, graduating in 2019. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Chen been practising?
Dr. Chen has 7 years experience. Calculated from a graduation year of 2019, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Chen do most often?
According to Medicare billing data, Dr. Chen performs imaging including ct guidance for insertion of radiation therapy fields, 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
- (657) 579-3129
- Email not available
Practice Locations
101 THE CITY DR S
Orange, CA 92868
Procedures Most Often Billed to Medicare
111 services · 24 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Ct guidance for insertion of radiation therapy fields | Imaging | 77014 |
99 |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
12 |
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 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.
Other radiation oncology specialists in Orange 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2019 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Ct guidance for insertion of radiation therapy fields 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.