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WANG JI M.D.
NPI 1215253059
Internal Medicine in Downey, CA

Active since April 19, 2010PECOS Enrolled
10000 LAKEWOOD BLVD, DOWNEY, CA 90240(562) 862-3684(562) 862-7145 Get Directions Write a Review

NPPES record last updated: September 6, 2019. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Wang Ji M.d. NPPES

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

WANG JI M.D. (NPI 1215253059) is an individual internal medicine provider in Downey, California, licensed in California (A125738) and active in the NPI registry since April 2010. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1215253059
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameWANG JICredential: M.D.
Location Address10000 LAKEWOOD BLVDDowney, CA 90240-4020
Mailing Address12900 Park Plaza Dr Ste 150Cerritos, CA 90703-9329 · (562) 977-4639
Phone(562) 862-3684
Fax(562) 862-7145
Sole ProprietorNo
Enumeration DateApril 19, 2010
Last NPPES UpdateSeptember 6, 2019
✔ NPI 1215253059 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A125738
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
10000 LAKEWOOD BLVD, Downey, CA 90240
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Other Names 1

Professional Name (2)James Ji Md

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Wang Ji M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Wang Ji reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Lakeside Medical Organization, A Medical Group Inc.
35 mi
Internal Medicine
8501 FALLBROOK AVE STE 300
West Hills, CA 91304
  • Reassigned Medicare billing, California enrollment
  • 205 clinicians in this Medicare group
NPI 1831426642 (818) 654-3400

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90240 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.

IVAN R CRUZ NP
Nurse Practitioner (Family)
10000 LAKEWOOD BLVD
DOWNEY, CA 90240
Los Angeles County (562) 862-3684
SUNGWON OK N.P.
Nurse Practitioner (Family)
10000 LAKEWOOD BLVD
DOWNEY, CA 90240
Los Angeles County (562) 862-3684
NAJAM PARVEZ IQBAL FNP-BC
Nurse Practitioner (Family)
10000 LAKEWOOD BLVD
DOWNEY, CA 90240
Los Angeles County (562) 862-3684
MRS. RACHEL CRUZ ARAGON NP
Nurse Practitioner
10000 LAKEWOOD BLVD
DOWNEY, CA 90240
Los Angeles County (562) 862-3684
MR. SERGIO HERNANDEZ NP
Nurse Practitioner (Family)
10000 LAKEWOOD BLVD
DOWNEY, CA 90240
Los Angeles County (562) 862-3684
DR. SAMEER AMIN MD
Internal Medicine
10000 LAKEWOOD BLVD
DOWNEY, CA 90240
Los Angeles County (562) 862-3684
IVY W. LIN OPTOMETRY, INC.
Optometrist
10000 LAKEWOOD BLVD
DOWNEY, CA 90240
Los Angeles County (562) 659-8347
HYONG J. KIM M.D.
Internal Medicine
10000 LAKEWOOD BLVD, ATTENTION MAGGIE NOLES MS 6165
DOWNEY, CA 90240
Los Angeles County (562) 862-3684

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 Wang Ji's NPI number?

The NPI number for Wang Ji is 1215253059. It was assigned to this individual provider in the NPPES registry on April 19, 2010. The provider is also known as James Ji MD.

Where is Wang Ji located?

Wang Ji practices at 10000 Lakewood Blvd, Downey, CA 90240. The listed phone number is (562) 862-3684.

What is Wang Ji's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Wang Ji enrolled in Medicare?

Yes. Wang Ji is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Wang Ji's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Wang Ji reassigns Medicare benefits to Lakeside Medical Organization, A Medical Group Inc. (West Hills, 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 Wang Ji'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 Wang Ji was last updated on September 6, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.