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DAVID WEI-CHAN CHIEN MD.
NPI 1346303674
Pediatrics in Porter Ranch, CA

Active since December 18, 2006PECOS Enrolled
19950 RINALDI ST, PORTER RANCH, CA 91326(818) 403-2440(818) 360-6090 Get Directions Write a Review

NPPES record last updated: March 30, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About David Wei-chan Chien Md. NPPES

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

DAVID WEI-CHAN CHIEN MD. (NPI 1346303674) is an individual pediatrics provider in Porter Ranch, California, licensed in California (A83875) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1346303674
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDAVID WEI-CHAN CHIENCredential: MD.
Location Address19950 RINALDI STPorter Ranch, CA 91326-4141
Mailing AddressPo Box 9602Mission Hills, CA 91346-9602 · (818) 837-5637 · Fax (818) 837-5589
Phone(818) 403-2440
Fax(818) 360-6090
Sole ProprietorNo
Enumeration DateDecember 18, 2006
Last NPPES UpdateMarch 30, 2021
NPPES CertifiedMarch 30, 2021
✔ NPI 1346303674 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CA · A83875
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
19950 RINALDI ST, Porter Ranch, CA 91326
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Other Identifiers 1

Medicaid00A838750CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

David Wei-chan Chien 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 David Chien reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Providence Facey Medical Foundation
9.5 mi
Internal Medicine
26357 MCBEAN PKWY
Valencia, CA 91355
  • Reassigned Medicare billing, California enrollment
  • 684 clinicians in this Medicare group
NPI 1710031588 (661) 222-2600

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 91326 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
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.

SUE YEON CHUNG MD.
Internal Medicine (Rheumatology)
19950 RINALDI ST
PORTER RANCH, CA 91326
Los Angeles County (818) 403-2420
RANGA NAYAK RAYUDU M.D.
Hospitalist
19950 RINALDI ST
PORTER RANCH, CA 91326
Los Angeles County (818) 363-3693
ALALEH SAREH MD.
Internal Medicine
19950 RINALDI ST
PORTER RANCH, CA 91326
Los Angeles County (818) 403-2420
YOUSSEF KAMEL SAAD YOUSSEF MD
Urology
19950 RINALDI ST
PORTER RANCH, CA 91326
Los Angeles County (818) 403-2470
DR. LOREN A LESHAN M.D.
Family Medicine
19950 RINALDI ST
PORTER RANCH, CA 91326
Los Angeles County (818) 403-2400
DR. JAMES S. LEE MD
Internal Medicine (Cardiovascular Disease)
19950 RINALDI ST, SUITE 300
PORTER RANCH, CA 91326
Los Angeles County (818) 271-2400
DR. MYA E. LEVY M.D.
Urology (Urogynecology and Reconstructive Pelvic Surgery)
19950 RINALDI ST
PORTER RANCH, CA 91326
Los Angeles County (818) 403-2400
ALI GOHARBIN MD.
Family Medicine
19950 RINALDI ST
PORTER RANCH, CA 91326
Los Angeles County (818) 403-2400

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 David Chien's NPI number?

The NPI number for David Chien is 1346303674. It was assigned to this individual provider in the NPPES registry on December 18, 2006.

Where is David Chien located?

David Chien practices at 19950 Rinaldi St, Porter Ranch, CA 91326. The listed phone number is (818) 403-2440.

What is David Chien's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is David Chien enrolled in Medicare?

Yes. David Chien is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for David Chien's services?

According to the CMS Revalidation Reassignment List (October 2026 release), David Chien reassigns Medicare benefits to Providence Facey Medical Foundation (Valencia, 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 David Chien'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 David Chien was last updated on March 30, 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.