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Edit this profileAt a glance
- 5451 la Palma Ave, Suite 25, La Palma, CA 90623
About Ruey Chang
Ruey J. Chang, P.A. is a physician assistant based in La Palma, CA. Ruey is also listed as specializing in physician assistant — medical. According to Medicare claims data, Ruey cared for 443 Medicare patients across 3,495 services. The services billed most often include hyaluronan or derivative, triluron, for intra-articular injection, 1 mg, injection, denosumab, 1 mg, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. The provider's National Provider Identifier (NPI) is 1699064006.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
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
- (714) 670-1340
- Email not available
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Practice Locations
5451 LA PALMA AVE SUITE 25
La Palma, CA 90623
Procedures Most Often Billed to Medicare
3,495 services · 443 patients · 13 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Aspiration and/or injection of fluid large joint using ultrasound guidance | Procedure | 20611 |
130 | More often than most peers in Physician Assistant |
| X-ray of hand, 2 views | Imaging | 73120 |
26 | Too few peers to compare |
| X-ray of foot, 2 views | Imaging | 73620 |
24 | Too few peers to compare |
| X-ray of knee, 1-2 views | Imaging | 73560 |
22 | As often as other peers in Physician Assistant |
| Dxa bone density measurement of hip, pelvis, spine | Imaging | 77080 |
15 | Less often than most peers in Physician Assistant |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
52 | More often than most peers in Physician Assistant |
| Injection of additional new drug or substance into vein | Treatment | 96375 |
51 | Too few peers to compare |
| Hyaluronan or derivative, triluron, for intra-articular injection, 1 mg | Drug given | J7332 |
1,520 | Too few peers to compare |
| Injection, denosumab, 1 mg | Drug given | J0897 |
1,320 | As often as other peers in Physician Assistant |
| Injection, diphenhydramine hcl, up to 50 mg | Drug given | J1200 |
29 | 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.
Other physician assistants at this location 3
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
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 — 29 related providers in 4 groups
Other physician assistants in La Palma 5
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2008 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Aspiration and/or injection of fluid large joint using ultrasound guidance 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Ruey J. Chang?
Ruey J. Chang is a physician assistant in La Palma, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Ruey J. Chang's address?
Ruey J. Chang is listed at 5451 la Palma Ave Suite 25, La Palma, CA 90623. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Ruey J. Chang?
The number on file is (714) 670-1340. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Ruey J. Chang's NPI number?
Ruey J. Chang's National Provider Identifier is 1699064006. 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 Ruey J. Chang train?
Ruey J. Chang attended Other, graduating in 2008. This comes from the CMS National Downloadable File.
CMS public data
How long has Ruey J. Chang been practicing?
Ruey J. Chang has 18 years experience. Calculated from a graduation year of 2008, reported in the CMS National Downloadable File.
CMS public data
What procedures does Ruey J. Chang perform?
According to Medicare billing data, Ruey J. Chang performs procedures including aspiration and/or injection of fluid large joint using ultrasound guidance; reads or performs imaging such as x-ray of hand, 2 views and x-ray of foot, 2 views; provides treatments such as injection of drug or substance under skin or into muscle and injection of additional new drug or substance into vein, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Ruey J. Chang confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Ruey J. Chang. If this is you, claiming it is free.
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