CHIWAI E CHAN D.O.
NPI 1629051529
Pain Medicine - Interventional Pain Medicine in Fountain Valley, CA

Q: What is Chiwai Chan's NPI number?

The NPI number for Chiwai Chan is 1629051529. It was assigned to this individual provider in the NPPES registry on November 23, 2005.

Q: What is Chiwai Chan's specialty?

The primary specialty registered for this NPI is Pain Medicine, specializing in Interventional Pain Medicine, with taxonomy code 208VP0014X.

Q: When was this NPI record last updated?

The NPPES record for Chiwai Chan was last updated on December 18, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since November 23, 2005PECOS Enrolled

11160 WARNER AVE, 417, FOUNTAIN VALLEY, CA 92708(714) 424-9300(714) 424-9324 Get Directions Write a Review

NPPES record last updated: December 18, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 18, 2020, Mar 14, 2017 (2 updates tracked since 2017).

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About Chiwai E Chan D.o. NPPES

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

CHIWAI E CHAN D.O. (NPI 1629051529) is an individual interventional pain medicine provider in Fountain Valley, California, licensed in California (20A8068) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS and is a graduate of College Of Osteo Med Of The Pacific At Pomona (2000).

NPPES Registry Identity

NPI1629051529

Entity TypeIndividualMale

Primary Taxonomy208VP0014X

Provider Legal NameCHIWAI E CHANCredential: D.O.

Location Address11160 WARNER AVE, 417Fountain Valley, CA 92708-4008

Mailing Address11160 Warner Ave, 417Fountain Valley, CA 92708-8703 · (714) 424-9300 · Fax (714) 424-9324

Phone(714) 424-9300

Fax(714) 424-9324

Sole ProprietorYes

Medical School CMSCollege Of Osteo Med Of The Pacific At PomonaGraduated 2000

Enumeration DateNovember 23, 2005

Last NPPES UpdateDecember 18, 20202 updates tracked since enumeration

NPPES CertifiedDecember 18, 2020

✔ NPI 1629051529 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPain Medicine · Interventional Pain MedicineAllopathic & Osteopathic Physicians

Taxonomy Code208VP0014X

License✔ Licensed in CA · 20A8068

Definition

Interventional Pain Medicine is the discipline of medicine devoted to the diagnosis and treatment of pain and related disorders principally with the application of interventional techniques in managing subacute, chronic, persistent, and intractable pain, independently or in conjunction with other modalities of treatment.

Also ListedPain Medicine · Pain MedicineTaxonomy 208VP0000X · License 4242 (AZ)

11160 WARNER AVE, Fountain Valley, CA 92708

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Chiwai E Chan D.o. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4981630811

PECOS Enrollment IDI20061207000483

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.

Medicare Billing Reassignment

Medicare enrollment records show Chiwai Chan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Pain Medicine Specialty Group Inc.

Same address

Pain Medicine

11160 WARNER AVE, 417
Fountain Valley, CA 92708

Reassigned Medicare billing, California enrollment

NPI 1770624702 (714) 424-9300

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 24

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.

Low osmolar contrast material, 200-299 mg/ml iodine concentration, per ml Q9966

Low osmolar contrast material with 200-299 mg/ml iodine concentration is a type of dye used in certain medical tests like CT scans or X-rays. It helps to highlight specific areas in your body, making them easier to see and examine. It's safe and commonly used.

50,598 services228 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 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.

4,179 services423 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

1,944 services211 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

742 services107 patients

Hyaluronan or derivative, hyalgan, supartz or visco-3, for intra-articular injection, per dose J7321

Hyaluronan or derivatives like Hyalgan, Supartz, or Visco-3, are used in intra-articular injections for joint pain relief. They help by improving joint lubrication, reducing inflammation, and promoting tissue healing. Each dose is administered directly into the joint space.

734 services72 patients

Fluoroscopic guidance for needle placement 77002

Fluoroscopic guidance for needle placement is a medical procedure that uses a special X-ray technology to help accurately place a needle in the body. It's often used in biopsies, injections or other treatments to ensure precision and safety.

730 services109 patients

Injection, methylprednisolone acetate, 20 mg J1020

Methylprednisolone acetate is a medication given via injection to reduce inflammation and pain. It's often used to treat conditions like arthritis, allergic reactions, and certain skin diseases. The 20 mg dose is tailored to your specific needs.

527 services31 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

257 services210 patients

Injection, methylprednisolone acetate, 40 mg J1030

Methylprednisolone acetate is a medication given through an injection. It's a type of corticosteroid, which reduces inflammation and immune responses. It can be used to treat various conditions like arthritis, allergies, and skin diseases. This dose is 40 mg.

238 services40 patients

Injection, methylprednisolone acetate, 80 mg J1040

Methylprednisolone acetate is a strong anti-inflammatory medication. It is often given as an 80 mg injection to reduce inflammation and pain. It's commonly used for conditions like arthritis, allergic disorders, or other inflammatory diseases.

208 services47 patients

Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level 64483

This procedure involves injecting a mix of numbing and anti-inflammatory medication into a specific nerve root in the lower back. It helps manage pain and reduce inflammation. The process is guided by imaging technology for precision.

194 services134 patients

Ultrasonic guidance for needle placement 76942

Ultrasonic guidance for needle placement is a technique where sound waves create images that help accurately position the needle during procedures. This method ensures precision, minimizes discomfort, and increases safety.

191 services32 patients

Maintenance of spinal canal or brain drug infusion pump by health care professional 95991

This procedure involves a healthcare professional managing a pump that delivers medication directly into your spinal canal or brain. It's typically done to ensure the pump is working correctly, to refill the medication, or to adjust the dosage.

184 services16 patients

Unclassified drugs J3490

Unclassified drugs are medications that don't fit into an existing category or class due to their unique properties or uses. They may be used for various conditions and their effects may differ widely. Always ask your healthcare provider for more information about these drugs.

176 services15 patients

Injection of trigger points, 3 or more muscles 20553

Trigger point injection therapy involves injecting medication into specific areas of your muscles, known as trigger points. These are areas that produce pain and discomfort. If you have three or more muscles affected, each will be treated individually.

85 services60 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

68 services68 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 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.

47 services31 patients

Injection of anesthetic and/or steroid drug into upper or middle spine nerve root using imaging guidance, single level 64479

This procedure involves injecting anesthetic or steroid medication into a specific nerve root in the upper or middle spine. It's performed using imaging technology for precise placement. The aim is to reduce inflammation and alleviate pain.

41 services33 patients

Injection of lower or sacral spine facet joint using imaging guidance, single level 64493

This procedure involves injecting medication into the facet joint in your lower back or sacral spine. It's done under imaging guidance to ensure accuracy. The aim is to alleviate pain and inflammation. It's a safe, often effective method for managing spinal discomfort.

32 services28 patients

Injection of lower or sacral spine facet joint using imaging guidance, second level 64494

This procedure involves injecting medication into the facet joints of your lower or sacral spine to manage pain. Imaging guidance ensures accurate placement. It's the second level, meaning it's done on two different joint levels.

32 services28 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 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.

23 services23 patients

Injection of anesthetic agent and/or steroid into lower back and leg nerve (sciatic nerve) 64445

This procedure involves injecting an anesthetic or steroid into the lower back and leg nerve to alleviate pain. The injection helps reduce inflammation and numb the area, providing relief from discomfort. This is a common treatment for conditions such as sciatica and herniated discs.

17 services15 patients

Injection of upper or middle spine facet joint using imaging guidance, single level 64490

This procedure involves injecting medication into a joint in your upper or middle spine. It's performed under imaging guidance for precision. The aim is to reduce inflammation and pain. It's a single-level process, meaning one joint is treated at a time.

16 services13 patients

Injection of upper or middle spine facet joint using imaging guidance, second level 64491

This procedure involves injecting medication into the upper or middle spine facet joint, a small joint in your back. This is done under imaging guidance for precision. It's a second-level procedure, meaning it's done on two separate joints. It can help reduce pain and inflammation.

16 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92708 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

ZAFAR S KHAN M.D. A MEDICAL CORPORATION

Surgery

11160 WARNER AVE, SUITE 311
FOUNTAIN VALLEY, CA 92708

Orange County (714) 850-7300

CIRCLEMED HEALTHCARE, A MEDICAL CORPORATION

Internal Medicine

11160 WARNER AVE, STE 405
FOUNTAIN VALLEY, CA 92708

Orange County (714) 263-0923

MEDICAL CENTER DENTAL GROUP

Dentist

11160 WARNER AVE, SUITE 303
FOUNTAIN VALLEY, CA 92708

Orange County (714) 557-8492

SHLOMI ALBERT MD INC

Urology

11160 WARNER AVE, SUITE 423
FOUNTAIN VALLEY, CA 92708

Orange County (714) 549-3333

LEDUC MEDICAL GROUP, INC.

Internal Medicine (Gastroenterology)

11160 WARNER AVE, SUITE 101
FOUNTAIN VALLEY, CA 92708

Orange County (714) 540-0105

DR. ELIZABETH Y NGHIEM M.D.

Internal Medicine (Infectious Disease)

11160 WARNER AVE, SUITE 323
FOUNTAIN VALLEY, CA 92708

Orange County (714) 751-7002

DR. JYOTSNA KENI M.D.

Pediatrics (Pediatric Endocrinology)

11160 WARNER AVE, SUITE 117
FOUNTAIN VALLEY, CA 92708

Orange County (714) 432-1950

PAYAM FARJOODI MD INC

Orthopaedic Surgery (Orthopaedic Surgery of the Spine)

11160 WARNER AVE
FOUNTAIN VALLEY, CA 92708

Orange County (714) 850-7300

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 Chiwai Chan's NPI number?

The NPI number for Chiwai Chan is 1629051529. It was assigned to this individual provider in the NPPES registry on November 23, 2005.

Where is Chiwai Chan located?

Chiwai Chan practices at 11160 Warner Ave 417, Fountain Valley, CA 92708. The listed phone number is (714) 424-9300.

What is Chiwai Chan's specialty?

The primary specialty registered for this NPI is Pain Medicine, specializing in Interventional Pain Medicine, with taxonomy code 208VP0014X.

Is Chiwai Chan enrolled in Medicare?

Yes. Chiwai Chan is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Chiwai Chan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Chiwai Chan reassigns Medicare benefits to Pain Medicine Specialty Group Inc. (Fountain Valley, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Chiwai Chan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Chiwai Chan was last updated on December 18, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.