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LISA YIANG YU CHIANG M.D.
NPI 1215097076
Internal Medicine - Infectious Disease in Downey, CA

Active since December 11, 2006PECOS EnrolledAccepts Medicare Assignment
9449 IMPERIAL HWY STE C120, DOWNEY, CA 90242(562) 657-4684 Get Directions Write a Review

NPPES record last updated: November 29, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 29, 2021, Nov 11, 2021 (2 updates tracked since 2021).

About Lisa Yiang Yu Chiang M.d. NPPES

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

LISA YIANG YU CHIANG M.D. (NPI 1215097076) is an individual infectious disease provider in Downey, California, licensed in California (A068016) and active in the NPI registry since December 2006. She is enrolled in Medicare PECOS and is a graduate of Georgetown University School Of Medicine (1997).

NPPES Registry Identity

NPI1215097076
Entity TypeIndividualFemale
Primary Taxonomy207RI0200X
Provider Legal NameLISA YIANG YU CHIANGCredential: M.D.
Location Address9449 IMPERIAL HWY STE C120Downey, CA 90242-2814
Mailing Address9449 Imperial Hwy Ste C120Downey, CA 90242-2814 · (562) 657-4684 · Fax (562) 657-2773
Phone(562) 657-4684
Sole ProprietorNo
Medical School CMSGeorgetown University School Of MedicineGraduated 1997
Enumeration DateDecember 11, 2006
Last NPPES UpdateNovember 29, 20212 updates tracked since enumeration
NPPES CertifiedNovember 11, 2021
✔ NPI 1215097076 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in CA · A068016
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
9449 IMPERIAL HWY STE C120, Downey, CA 90242
Open in Google Maps ↗

Other Identifiers 1

OtherM050376CA · County Of Los Angeles Harbor Ucla Medical Center

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

Lisa Yiang Yu Chiang 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 ID9739075458
PECOS Enrollment IDI20040227000345
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 Reassignments

2

Medicare enrollment records show Lisa Chiang reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Southern California Permanente Medical Group
1.1 mi
Health Maintenance Organization
9400 ROSECRANS AVE
Bellflower, CA 90706
  • Reassigned Medicare billing, California enrollment
  • 13,921 clinicians in this Medicare group
NPI 1043242555 (562) 461-3000
County Of Los Angeles
2.0 mi
Clinical Medical Laboratory
12750 ERICKSON AVE
Downey, CA 90242
  • Reassigned Medicare billing, California enrollment
  • 1,939 clinicians in this Medicare group
NPI 1740465582 (562) 658-1300

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 90242 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 Lisa Chiang's NPI number?

The NPI number for Lisa Chiang is 1215097076. It was assigned to this individual provider in the NPPES registry on December 11, 2006.

Where is Lisa Chiang located?

Lisa Chiang practices at 9449 Imperial Hwy Ste C120, Downey, CA 90242. The listed phone number is (562) 657-4684.

What is Lisa Chiang's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Lisa Chiang enrolled in Medicare?

Yes. Lisa Chiang 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 organizations bill Medicare for Lisa Chiang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Lisa Chiang reassigns Medicare benefits to 2 organizations: Southern California Permanente Medical Group (Bellflower, CA) and County Of Los Angeles (Downey, CA). Each 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 Lisa Chiang'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 Lisa Chiang was last updated on November 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.