ERIC M. CHEN MD
NPI 1558440222
Allergy & Immunology in Walnut Creek, CA

Q: What is Eric Chen's NPI number?

The NPI number for Eric Chen is 1558440222. It was assigned to this individual provider in the NPPES registry on November 3, 2006.

Q: What is Eric Chen's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Eric Chen was last updated on December 6, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 November 03, 2006PECOS Enrolled

320 LENNON LN, WALNUT CREEK, CA 94598(925) 906-2000 Get Directions Write a Review

NPPES record last updated: December 6, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Eric M. Chen Md NPPES

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

ERIC M. CHEN MD (NPI 1558440222) is an individual allergy & immunology provider in Walnut Creek, California, licensed in California (A68015) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1558440222

Entity TypeIndividualMale

Primary Taxonomy207K00000X

Provider Legal NameERIC M. CHENCredential: MD

Location Address320 LENNON LNWalnut Creek, CA 94598-2419

Mailing Address1800 Harrison St Fl 7Oakland, CA 94612-3466 · (510) 625-6262

Phone(925) 906-2000

Sole ProprietorNo

Enumeration DateNovember 3, 2006

Last NPPES UpdateDecember 6, 2021

✔ NPI 1558440222 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 · A68015

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.

320 LENNON LN, Walnut Creek, CA 94598

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Other Identifiers 1

Medicaid00A680150CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Eric M. Chen 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 Eric Chen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc

18 mi

Internal Medicine

901 NEVIN
Richmond, CA 94801

Reassigned Medicare billing, California enrollment
20,078 clinicians in this Medicare group

NPI 1235226531 (510) 307-1555

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

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.

LINDA MARIE HECKENLIVELY M.S., CCC-SLP

Speech-Language Pathologist