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WAH WAH CHU MD
NPI 1891018719
Internal Medicine in Palmdale, CA

Active since March 05, 2010PECOS Enrolled
38636 MEDICAL CENTER DR STE C, PALMDALE, CA 93551(661) 273-0100 Get Directions Write a Review

NPPES record last updated: February 4, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Wah Wah Chu Md NPPES

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

WAH WAH CHU MD (NPI 1891018719) is an individual internal medicine provider in Palmdale, California, licensed in California (A110341) and active in the NPI registry since March 2010. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1891018719
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameWAH WAH CHUCredential: MD
Location Address38636 MEDICAL CENTER DR STE CPalmdale, CA 93551-4689
Mailing Address44469 10th St WLancaster, CA 93534-3324 · (661) 945-9411
Phone(661) 273-0100
Sole ProprietorNo
Enumeration DateMarch 5, 2010
Last NPPES UpdateFebruary 4, 2021
NPPES CertifiedFebruary 4, 2021
✔ NPI 1891018719 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A110341
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.
38636 MEDICAL CENTER DR STE C, Palmdale, CA 93551
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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)

Wah Wah Chu Md 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 Wah Wah Chu reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sierra Medical Group Holding Company, Inc.
7.5 mi
Multi-Specialty
44469 10TH ST W
Lancaster, CA 93534
  • Reassigned Medicare billing, California enrollment
  • 13 clinicians in this Medicare group
NPI 1780832972 (818) 654-3463

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 93551 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

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ANNA MADORSKAYA PA-C
Physician Assistant
38636 MEDICAL CENTER DR STE C
PALMDALE, CA 93551
Los Angeles County (661) 273-0100

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 Wah Wah Chu's NPI number?

The NPI number for Wah Wah Chu is 1891018719. It was assigned to this individual provider in the NPPES registry on March 5, 2010.

Where is Wah Wah Chu located?

Wah Wah Chu practices at 38636 Medical Center Dr Ste C, Palmdale, CA 93551. The listed phone number is (661) 273-0100.

What is Wah Wah Chu's specialty?

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

Is Wah Wah Chu enrolled in Medicare?

Yes. Wah Wah Chu is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Wah Wah Chu's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Wah Wah Chu reassigns Medicare benefits to Sierra Medical Group Holding Company, Inc. (Lancaster, 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 Wah Wah Chu'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 Wah Wah Chu was last updated on February 4, 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.