RUEY JEN CHANG P.A.
NPI 1699064006
Physician Assistant - Medical in La Palma, CA

Q: What is Ruey Chang's NPI number?

The NPI number for Ruey Chang is 1699064006. It was assigned to this individual provider in the NPPES registry on April 6, 2011.

Q: What is Ruey Chang's specialty?

The primary specialty registered for this NPI is Physician Assistant, specializing in Medical, with taxonomy code 363AM0700X.

Q: When was this NPI record last updated?

The NPPES record for Ruey Chang was last updated on April 7, 2011. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since April 06, 2011PECOS EnrolledAccepts Medicare Assignment

100/100

CMS Quality Rating

5451 LA PALMA AVE, SUITE 25, LA PALMA, CA 90623(714) 670-1340(714) 443-3780 Get Directions Write a Review

NPPES record last updated: April 7, 2011. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Ruey Jen Chang P.a. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

RUEY JEN CHANG P.A. (NPI 1699064006) is an individual medical provider in La Palma, California, licensed in California (PA20204) and active in the NPI registry since April 2011. She is enrolled in Medicare PECOS and is a graduate of Other (2008).

NPPES Registry Identity

NPI1699064006

Entity TypeIndividualFemale

Primary Taxonomy363AM0700X

Provider Legal NameRUEY JEN CHANGCredential: P.A.

Location Address5451 LA PALMA AVE, SUITE 25La Palma, CA 90623-1728

Mailing Address5451 La Palma Ave, Suite 25La Palma, CA 90623-1728 · (714) 670-1340 · Fax (714) 443-3780

Phone(714) 670-1340

Fax(714) 443-3780

Sole ProprietorNo

Medical School CMSOtherGraduated 2008

Enumeration DateApril 6, 2011

Last NPPES UpdateApril 7, 2011

✔ NPI 1699064006 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician Assistant · MedicalPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363AM0700X

License✔ Licensed in CA · PA20204

5451 LA PALMA AVE, La Palma, CA 90623

Open in Google Maps ↗

Other Identifiers 1

OtherPA20204CA · Physician Assistant License

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ruey Jen Chang P.a. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6901083831

PECOS Enrollment IDI20110602000103

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 13

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.

Hyaluronan or derivative, triluron, for intra-articular injection, 1 mg J7332

Triluron is a treatment involving injections of a substance called hyaluronan into your joints. It helps to lubricate and cushion the joint, which can reduce pain and improve movement, especially in conditions like osteoarthritis. Each injection contains 1 mg of hyaluronan.

1,780 services27 patients

Established patient office or other outpatient visit, 30-39 minutes 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

317 services216 patients

Aspiration and/or injection of fluid large joint using ultrasound guidance 20611

This procedure involves using ultrasound technology to accurately locate a large joint, usually the knee or shoulder. A needle is then inserted to either extract fluid (aspiration) or inject medication. The ultrasound helps ensure precision and safety.

225 services65 patients

Established patient office or other outpatient visit, 20-29 minutes 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

117 services106 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

91 services41 patients

Hyaluronan or derivative, euflexxa, for intra-articular injection, per dose J7323

Hyaluronan or Euflexxa is a substance similar to a natural substance in your joints. It's injected into the joint space to treat pain from osteoarthritis, especially in the knee. It helps to lubricate the joint, reducing pain and improving mobility.

65 services16 patients

Complete ultrasound scan of joint 76881

A complete ultrasound scan of a joint is a non-invasive procedure using sound waves to create images of your joint. It helps identify problems like inflammation, injury, or disease. It's painless, safe, and doesn't involve radiation.

57 services29 patients

New patient office or other outpatient visit, 45-59 minutes 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

39 services39 patients

X-ray of hand, 2 views 73120

An X-ray of the hand, 2 views, is a non-invasive imaging test that uses a small amount of radiation to produce pictures of the bones in your hand. Two different angles are captured to provide a comprehensive view. This helps in diagnosing injuries or conditions affecting your hand.

26 services13 patients

X-ray of foot, 2 views 73620

An X-ray of the foot, 2 views, is a quick, painless test that produces images of the bones and structures inside your foot. Two different angles are used to provide a comprehensive view. This helps doctors diagnose fractures, infections, or other abnormalities.

26 services13 patients

Established patient office or other outpatient visit, 40-54 minutes 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

23 services22 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

17 services15 patients

Dxa bone density measurement of hip, pelvis, spine 77080

A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.

15 services15 patients

Medicare 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.

100/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

100

Improvement Activities

Cost

100

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.

DR. MARK SCHEIER MD.

Family Medicine

5451 LA PALMA AVE, STE 22
LA PALMA, CA 90623

Orange County (714) 228-1446

MARTIN ANDREW GARCIA M.D.

Otolaryngology

5451 LA PALMA AVE, STE 32
LA PALMA, CA 90623

Orange County (714) 228-1919

DR. HELENE SAAD M.D.

Family Medicine

5451 LA PALMA AVE, SUITE 19
LA PALMA, CA 90623

Orange County (714) 521-9126

DR. DHARINI MAHENDRA PATEL M.D.

Anesthesiology

5451 LA PALMA AVE, STE 15
LA PALMA, CA 90623

Orange County (714) 809-2221

DR. SANG BAK YOO M.D.

Obstetrics & Gynecology

5451 LA PALMA AVE, SUITE 48
LA PALMA, CA 90623

Orange County (714) 523-8556

DR. BEHROOZ AHMADI M.D

Specialist

5451 LA PALMA AVE, #34
LA PALMA, CA 90623

Orange County (714) 739-5816

DR. MAHENDRA SOMABHAI PATEL M.D.

Internal Medicine

5451 LA PALMA AVE, SUITE # 15
LA PALMA, CA 90623

Orange County (714) 994-1401

SU YONG PAK,M.D. INC

Internal Medicine (Gastroenterology)

5451 LA PALMA AVE, 14
LA PALMA, CA 90623

Orange County (714) 523-3212

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 Ruey Chang's NPI number?

The NPI number for Ruey Chang is 1699064006. It was assigned to this individual provider in the NPPES registry on April 6, 2011.

Where is Ruey Chang located?

Ruey Chang practices at 5451 La Palma Ave Suite 25, La Palma, CA 90623. The listed phone number is (714) 670-1340.

What is Ruey Chang's specialty?

The primary specialty registered for this NPI is Physician Assistant, specializing in Medical, with taxonomy code 363AM0700X.

Is Ruey Chang enrolled in Medicare?

Yes. Ruey Chang is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Ruey Chang was last updated on April 7, 2011. NPI Profile syncs with the weekly NPPES data releases published by CMS.