NPI Portal NPI Lookup & Verification

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

Ms. Lisa-Sun Gresham

Counselor in Greenbrae, CA · enumerated 2014.

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

National Provider Identifier

1356753289

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Registry record

Entity type Individual (Type 1)
Name Ms. Lisa-Sun Gresham
Sex Female
Practice address Greenbrae, CA, 94904
Phone (415) 473-6835
Enumeration date May 27, 2014
Last updated in NPPES Nov 19, 2015

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

Is NPI 1356753289 active?
Yes, as of the latest NPPES snapshot, NPI 1356753289 is active (record last updated 2015-11-19).
How do I verify Lisa-Sun Gresham's NPI record?
Cross-check NPI 1356753289 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 2015-11-19.