PACIFIC ALLERGY & ASTHMA MEDICAL ASSOC
NPI 1669642658
Allergy & Immunology in Torrance, CA

Q: What is Ellyn R. Ashida, M.D., Inc.'s NPI number?

The NPI number for Ellyn R. Ashida, M.D., Inc. is 1669642658. It was assigned to this organization in the NPPES registry on March 5, 2008. The provider is doing business as Pacific Allergy & Asthma Medical Assoc.

Q: What is Ellyn R. Ashida, M.D., Inc.'s specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Active since March 05, 2008

4201 TORRANCE BLVD, 730, TORRANCE, CA 90503(310) 944-9098 Get Directions Write a Review

NPPES record last updated: February 21, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Pacific Allergy & Asthma Medical Assoc NPPES

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

PACIFIC ALLERGY & ASTHMA MEDICAL ASSOC (NPI 1669642658) is a healthcare organization registered as an allergy & immunology in Torrance, California and active in the NPI registry since March 2008. The organization lists Ellyn Ashida, President, as its authorized official.

NPPES Registry Identity

NPI1669642658

Entity TypeOrganization

Primary Taxonomy207K00000X

Legal Business NameELLYN R. ASHIDA, M.D., INC.

Location Address4201 TORRANCE BLVD, 730Torrance, CA 90503-4504

Mailing Address4201 Torrance Blvd, 730Torrance, CA 90503-4504

Phone(310) 944-9098

Organization SubpartNo

Authorized OfficialEllyn AshidaPresident · (310) 944-9098

Enumeration DateMarch 5, 2008

Last NPPES UpdateFebruary 21, 2020

✔ NPI 1669642658 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAllergy & ImmunologyAllopathic & Osteopathic Physicians

Taxonomy Code207K00000X

License✔ Licensed in CA · C40034

Definition

An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.

4201 TORRANCE BLVD, Torrance, CA 90503

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Other Names 1

Doing Business AsPacific Allergy & Asthma Medical Assoc

Other Identifiers 1

Medicaid00C400340CA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Pacific Allergy & Asthma Medical Assoc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Pacific Allergy & Asthma Medical Assoc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Ellyn Ashida, MD

Allergy/Immunology

NPI 1245201516

4201 TORRANCE BLVD 730
Torrance, CA 90503

(310) 944-9098

✔ PECOS✔ Accepts MedicareSame address

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

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 Ellyn R. Ashida, M.D., Inc.'s NPI number?

The NPI number for Ellyn R. Ashida, M.D., Inc. is 1669642658. It was assigned to this organization in the NPPES registry on March 5, 2008. The provider is doing business as Pacific Allergy & Asthma Medical Assoc.

Where is Ellyn R. Ashida, M.D., Inc. located?

Ellyn R. Ashida, M.D., Inc. is located at 4201 Torrance Blvd 730, Torrance, CA 90503. The listed phone number is (310) 944-9098.

What is Ellyn R. Ashida, M.D., Inc.'s specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Is Ellyn R. Ashida, M.D., Inc. enrolled in Medicare?

Yes. Ellyn R. Ashida, M.D., Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Ellyn R. Ashida, M.D., Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Allergy/Immunology) reassigns their Medicare billing to Ellyn R. Ashida, M.D., Inc.. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Ellyn R. Ashida, M.D., Inc. was last updated on February 21, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.