ARTHUR AN M D INC
NPI 1558572610
Specialist in Arcadia, CA

Q: What is Arthur An M D Inc's NPI number?

The NPI number for Arthur An M D Inc is 1558572610. It was assigned to this organization in the NPPES registry on May 24, 2007. The provider was formerly known as Arthur An, M.D., Inc.

Q: What is Arthur An M D Inc's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Q: When was this NPI record last updated?

The NPPES record for Arthur An M D Inc was last updated on February 13, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.

Active since May 24, 2007

1015 N 1ST AVE, ARCADIA, CA 91006(626) 566-2866(626) 566-2850 Get Directions Write a Review

NPPES record last updated: February 13, 2024. Verified against the NPPES registry weekly; last sync: November 08, 2026.

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About Arthur An M D Inc NPPES

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

ARTHUR AN M D INC (NPI 1558572610), doing business as Arthur An, M.d., Inc, is a healthcare organization registered as a specialist in Arcadia, California and active in the NPI registry since May 2007. The organization lists Lynna Del Castillo, Billing Administrator, as its authorized official.

NPPES Registry Identity

NPI1558572610

Entity TypeOrganization

Primary Taxonomy174400000X

Legal Business NameARTHUR AN M D INC

Location Address1015 N 1ST AVEArcadia, CA 91006-7401

Mailing Address1015 N 1st AveArcadia, CA 91006-7401 · (626) 566-2866 · Fax (626) 566-2850

Phone(626) 566-2866

Fax(626) 566-2850

Organization SubpartNo

Authorized OfficialLynna Del CastilloBilling Administrator · (626) 827-6806

Enumeration DateMay 24, 2007

Last NPPES UpdateFebruary 13, 2024

NPPES CertifiedFebruary 13, 2024

✔ NPI 1558572610 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

License✔ Licensed in CA · A61877

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

1015 N 1ST AVE, Arcadia, CA 91006

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Other Names 1

Former Legal Business NameArthur An, M.d., Inc

Other Identifiers 2

Other00A618770CA · Blue Shield

Other551872962CA · Blue Cross

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)

Arthur An M D Inc 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 Arthur An M D Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Arthur An, M.D.

Neurology

NPI 1649293259

1015 N FIRST AVE SUITE A
Arcadia, CA 91006

(626) 332-7090

✔ 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 Arthur An M D Inc's NPI number?

The NPI number for Arthur An M D Inc is 1558572610. It was assigned to this organization in the NPPES registry on May 24, 2007. The provider was formerly known as Arthur An, M.D., Inc.

Where is Arthur An M D Inc located?

Arthur An M D Inc is located at 1015 N 1st Ave, Arcadia, CA 91006. The listed phone number is (626) 566-2866.

What is Arthur An M D Inc's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Arthur An M D Inc enrolled in Medicare?

Yes. Arthur An M D Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Arthur An M D Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Neurology) reassigns their Medicare billing to Arthur An 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 Arthur An M D Inc was last updated on February 13, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.