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DR. JOSHUA ANDREW SIEMBIEDA M.D.
NPI 1225322357
Pediatrics in Torrance, CA

Active since June 07, 2011PECOS EnrolledAccepts Medicare Assignment
1000 W CARSON ST, TORRANCE, CA 90502(310) 222-3503(310) 212-6101 Get Directions Write a Review

NPPES record last updated: September 20, 2014. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Joshua Andrew Siembieda M.d. NPPES

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

DR. JOSHUA ANDREW SIEMBIEDA M.D. (NPI 1225322357) is an individual pediatrics provider in Torrance, California, licensed in California (A124630) and active in the NPI registry since June 2011. He is enrolled in Medicare PECOS and is a graduate of Other (2011).

NPPES Registry Identity

NPI1225322357
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDR. JOSHUA ANDREW SIEMBIEDACredential: M.D.
Location Address1000 W CARSON STTorrance, CA 90502-2004
Mailing Address1000 W Carson St, Box 21Torrance, CA 90502-2004 · (310) 222-3503 · Fax (310) 212-6101
Phone(310) 222-3503
Fax(310) 212-6101
Sole ProprietorNo
Medical School CMSOtherGraduated 2011
Enumeration DateJune 7, 2011
Last NPPES UpdateSeptember 20, 2014
✔ NPI 1225322357 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CA · A124630
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.
1000 W CARSON ST, Torrance, CA 90502
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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

Dr. Joshua Andrew Siembieda 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 ID6103139928
PECOS Enrollment IDI20150722004089
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 Joshua Siembieda reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Emergency Medicine Specialists Of Orange County
25 mi
Emergency Medicine
1100 WEST STEWART DR
Orange, CA 92868
  • Reassigned Medicare billing, California enrollment
  • 97 clinicians in this Medicare group
NPI 1740214733 (714) 633-9111

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 90502 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.

MISS BRITTANY IRVINE M.A.
Student in an Organized Health Care Education/Training Program
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (310) 222-2345
DEPAREMENT OF MANTAL HEALTH
Case Management
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (310) 222-1648
DINA M MEZA
Nurse Practitioner (Family)
1000 W CARSON ST, HEAD AND NECK BOX 6
TORRANCE, CA 90502
Los Angeles County (310) 222-2741
MARIA GUADALUPE VALADEZ
Student in an Organized Health Care Education/Training Program
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (559) 789-1327
ESTEBAN COTA
Specialist
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (310) 222-2345
MS. DAWN MARIE TLUSTY RN
Registered Nurse (Infusion Therapy)
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (310) 222-1906
DR. NICOLE MOORE MD
Student in an Organized Health Care Education/Training Program
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (310) 222-2345
KENTON YUJI SAKURAI
Psychiatry & Neurology (Psychiatry)
1000 W CARSON ST
TORRANCE, CA 90502
Los Angeles County (424) 306-4000

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 Joshua Siembieda's NPI number?

The NPI number for Joshua Siembieda is 1225322357. It was assigned to this individual provider in the NPPES registry on June 7, 2011.

Where is Joshua Siembieda located?

Joshua Siembieda practices at 1000 W Carson St, Torrance, CA 90502. The listed phone number is (310) 222-3503.

What is Joshua Siembieda's specialty?

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

Is Joshua Siembieda enrolled in Medicare?

Yes. Joshua Siembieda 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 Joshua Siembieda's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joshua Siembieda reassigns Medicare benefits to Emergency Medicine Specialists Of Orange County (Orange, 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 Joshua Siembieda'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 Joshua Siembieda was last updated on September 20, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.