ALLERGY, ASTHMA & SINUS CENTERS OF SILICON VALLEY, INC.
NPI 1609210590
Allergy & Immunology - Allergy in Castro Valley, CA
About Allergy, Asthma & Sinus Centers Of Silicon Valley, Inc. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALLERGY, ASTHMA & SINUS CENTERS OF SILICON VALLEY, INC. (NPI 1609210590) is a healthcare organization registered as an allergy in Castro Valley, California and active in the NPI registry since April 2013. The organization lists Kenneth W Lien, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Allergy, Asthma & Sinus Centers Of Silicon Valley, 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 Allergy, Asthma & Sinus Centers Of Silicon Valley, Inc., which bills Medicare for the services this clinician delivers.
Clinician (1)
Castro Valley, CA 94546
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 Allergy, Asthma & Sinus Centers Of Silicon Valley, Inc.'s NPI number?
The NPI number for Allergy, Asthma & Sinus Centers Of Silicon Valley, Inc. is 1609210590. It was assigned to this organization in the NPPES registry on April 22, 2013.
Where is Allergy, Asthma & Sinus Centers Of Silicon Valley, Inc. located?
Allergy, Asthma & Sinus Centers Of Silicon Valley, Inc. is located at 20400 Lake Chabot Rd Ste 304, Castro Valley, CA 94546. The listed phone number is (510) 537-0700.
What is Allergy, Asthma & Sinus Centers Of Silicon Valley, Inc.'s specialty?
The primary specialty registered for this NPI is Allergy & Immunology, specializing in Allergy, with taxonomy code 207KA0200X.
Is Allergy, Asthma & Sinus Centers Of Silicon Valley, Inc. enrolled in Medicare?
Yes. Allergy, Asthma & Sinus Centers Of Silicon Valley, Inc. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Allergy, Asthma & Sinus Centers Of Silicon Valley, Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Allergy/Immunology) reassigns their Medicare billing to Allergy, Asthma & Sinus Centers Of Silicon Valley, 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 Allergy, Asthma & Sinus Centers Of Silicon Valley, Inc. was last updated on February 3, 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.
# Allergy, Asthma & Sinus Centers Of Silicon Valley, Inc. · NPI 1609210590
Allergy organization in Castro Valley, California. Organization record, active in the CMS NPPES registry since April 22, 2013.
## Identity
- **NPI:** 1609210590 (Entity type: Organization)
- **Enumerated:** April 22, 2013
- **Primary specialty:** Allergy & Immunology - Allergy · taxonomy 207KA0200X
- **Organization subpart:** No
- **Authorized official:** Kenneth Lien, PRESIDENT
## Practice location
- **Address:** 20400 LAKE CHABOT RD STE 304, Castro Valley, CA 94546-5316
- **Phone:** (510) 537-0700 · **Fax:** (510) 537-7795
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Allergy/Immunology) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 3, 2014
- **Other identifiers:** Other CA110780 (CA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1609210590) · Data from the CMS NPPES public registry.