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

Mrs. Natalie Dawn Guevara-Lehman, LMSW, LCSW

Clinical Social Worker in San Francisco, CA · enumerated 2012.

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

National Provider Identifier

1578835757

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Registry record

Entity type Individual (Type 1)

Name Mrs. Natalie Dawn Guevara-Lehman

Credential LMSW, LCSW

Sex Female

Practice address San Francisco, CA, 94111

Phone (888) 663-6331

Enumeration date Feb 2, 2012

Last updated in NPPES Nov 20, 2023

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

Taxonomy & licenses

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 63746 (CA) Secondary

103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License 63746 (CA) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 63746 (CA) Secondary

1041S0200X School Social Worker Behavioral Health & Social Service Providers Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 6801093260 (MI) Primary

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

101Y00000X Counselor Behavioral Health & Social Service Providers Secondary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1578835757 active?

Yes, as of the latest NPPES snapshot, NPI 1578835757 is active (record last updated 2023-11-20).

How do I verify Natalie Guevara-Lehman's NPI record?

Cross-check NPI 1578835757 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-20.