Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

David A. Sidell

Counselor in Vallejo, CA · enumerated 2014.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1811385982

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Registry record

Entity type Individual (Type 1)

Name David A. Sidell

Sex Male

Practice address 508 Alabama St, Vallejo, CA, 94590

Phone (510) 318-6137

Fax (510) 569-4589

Enumeration date Dec 24, 2014

Last updated in NPPES Sep 21, 2018

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Secondary

101Y00000X Counselor Behavioral Health & Social Service Providers Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify David Sidell's NPI record?

Cross-check NPI 1811385982 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1811385982 active?

Yes, as of the latest NPPES snapshot, NPI 1811385982 is active (record last updated 2018-09-21).

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James Christopher Marriage & Family Therapist · Vallejo, CA NPI 1235276486 Rhonda Jobe-Bell Community Health Worker · Vallejo, CA NPI 1225289804 Earl Jefferson Case Manager/Care Coordinator · Vallejo, CA NPI 1023337409 Ixayan Baez Case Manager/Care Coordinator · Vallejo, CA NPI 1851683197 Claire Polansky Marriage & Family Therapist · Vallejo, CA NPI 1952679151 Myeasa Allen Marriage & Family Therapist · Vallejo, CA NPI 1073924007 Kingsley Nwala Adult Companion · Vallejo, CA NPI 1700282506 Jessica Valdez Depee Clinical Social Worker · Vallejo, CA NPI 1881077725

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-21.