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JAEWOO PAK M.D.
NPI 1962567321
Pain Medicine - Pain Medicine in Irvine, CA

Active since December 26, 2006PECOS EnrolledAccepts Medicare Assignment
4840 IRVINE BLVD STE 203, IRVINE, CA 92620(714) 389-7000 Get Directions Write a Review

NPPES record last updated: June 17, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Jaewoo Pak M.d. NPPES

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

JAEWOO PAK M.D. (NPI 1962567321) is an individual pain medicine provider in Irvine, California, licensed in California (G077617) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Southern California Keck School Of Medicine (1992).

NPPES Registry Identity

NPI1962567321
Entity TypeIndividualMale
Primary Taxonomy208VP0000X
Provider Legal NameJAEWOO PAKCredential: M.D.
Location Address4840 IRVINE BLVD STE 203Irvine, CA 92620-1962
Mailing Address4840 Irvine Blvd Ste 203Irvine, CA 92620-1962 · (714) 389-7000
Phone(714) 389-7000
Sole ProprietorYes
Medical School CMSUniversity Of Southern California Keck School Of MedicineGraduated 1992
Enumeration DateDecember 26, 2006
Last NPPES UpdateJune 17, 2021
NPPES CertifiedJune 17, 2021
✔ NPI 1962567321 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPain Medicine · Pain MedicineAllopathic & Osteopathic Physicians
Taxonomy Code208VP0000X
License✔ Licensed in CA · G077617
Definition
Pain Medicine is a primary medical specialty based on a distinct body of knowledge and a well-defined scope of clinical practice that is founded on science, research and education. It is concerned with the study of pain, the prevention of pain, and the evaluation, treatment, and rehabilitation of persons in pain. A comprehensive evaluation incorporates the physical, psychological, cognitive and socio-cultural contributions to pain. The treatment protocol may include pharmacological, invasive, behavioral, cognitive, rehabilitative and complementary strategies provided in a concurrent focused and patient specific manner. The pain medicine physician often serves the patient as a frontline physician regarding their pain, but also may serve as a consultant to other physicians, direct an interdisciplinary/multidisciplinary treatment team, conduct research, or advocate for the patient's pain care with public and private agencies. The Pain Medicine physician may work in variety of settings including office, clinic, hospital, university, or governmental/public agencies.
Also ListedInternal MedicineTaxonomy 207R00000X · License G077617 (CA)
4840 IRVINE BLVD STE 203, Irvine, CA 92620
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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 and accepts Medicare assignment

Jaewoo Pak M.d. 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 ID7214992965
PECOS Enrollment IDI20041122001301
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 Jaewoo Pak reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Stems Prp, Inc
15 mi
Pain
626 W COMMONWEALTH AVE
Fullerton, CA 92832
  • Reassigned Medicare billing, California enrollment
NPI 1861224339 (714) 389-7000

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 11

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.

Injection, dexamethasone sodium phosphate, 1 mg J1100
Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.
16,361 services212 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.
10,800 services213 patients
Injection into tendon or ligament 20550
An injection into a tendon or ligament involves placing medication directly into these areas to help reduce inflammation and pain. It's often used for conditions like arthritis or tendonitis. The procedure is quick and usually involves a local anesthetic.
8,307 services209 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.
5,516 services210 patients
Aspiration and/or injection of fluid from medium joint 20605
This procedure involves a needle being inserted into a medium-sized joint, such as a knee or shoulder, to remove (aspirate) excess fluid. Sometimes, medication may also be injected into the joint to reduce inflammation and pain.
2,536 services144 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.
2,270 services195 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92620 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.

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 Jaewoo Pak's NPI number?

The NPI number for Jaewoo Pak is 1962567321. It was assigned to this individual provider in the NPPES registry on December 26, 2006.

Where is Jaewoo Pak located?

Jaewoo Pak practices at 4840 Irvine Blvd Ste 203, Irvine, CA 92620. The listed phone number is (714) 389-7000.

What is Jaewoo Pak's specialty?

The primary specialty registered for this NPI is Pain Medicine with taxonomy code 208VP0000X.

Is Jaewoo Pak enrolled in Medicare?

Yes. Jaewoo Pak 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.

Which organization bills Medicare for Jaewoo Pak's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jaewoo Pak reassigns Medicare benefits to Stems Prp, Inc (Fullerton, 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 Jaewoo Pak'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 Jaewoo Pak was last updated on June 17, 2021. 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.