Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Der-Yi Li, LPCC, LMHC

Counselor in Sunnyvale, CA · enumerated 2016 · practices at Sf Bay Marriage & Family Therapist Group, P.C..

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

National Provider Identifier

1003363094

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Registry record

Entity type Individual (Type 1)

Name Der-Yi Li

Credential LPCC, LMHC

Sex Female

Practice address Sunnyvale, CA, 94087

Phone (650) 618-6434

Enumeration date Sep 7, 2016

Last updated in NPPES Oct 20, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

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 Der-Yi Li's NPI record?

Cross-check NPI 1003363094 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1003363094 active?

Yes, as of the latest NPPES snapshot, NPI 1003363094 is active (record last updated 2023-10-20).

Other providers at this practice address

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Sf Bay Marriage & Family Therapist Group, P.C. Mental Health Counselor · Sunnyvale, CA NPI 1104387059 Maura Uyeda Clinical Social Worker · Sunnyvale, CA NPI 1669018412 Amber Loughran Marriage & Family Therapist · Sunnyvale, CA NPI 1952039166 Cindy Manko Marriage & Family Therapist · Sunnyvale, CA NPI 1023712502

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-20.