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

Sarah Nicole Mendelssohn, MS, LLP

Psychologist in Novi, MI · enumerated 2020 · practices at Ellie Mental Health Live Authentic Pllc.

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

National Provider Identifier

1073112355

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Registry record

Entity type Individual (Type 1)

Name Sarah Nicole Mendelssohn

Credential MS, LLP

Sex Female

Practice address Novi, MI, 48375

Phone (877) 693-5543

Fax (248) 221-1775

Enumeration date Oct 19, 2020

Last updated in NPPES Jul 11, 2025

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

Taxonomy & licenses

103TM1800X Intellectual & Developmental Disabilities Psychologist Behavioral Health & Social Service Providers · License 6361007919 (MI) Secondary

103T00000X Psychologist 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1073112355 active?

Yes, as of the latest NPPES snapshot, NPI 1073112355 is active (record last updated 2025-07-11).

How do I verify Sarah Mendelssohn's NPI record?

Cross-check NPI 1073112355 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Marta Kotlinska Professional Counselor · Novi, MI NPI 1861638355 Matthew Govier Professional Counselor · Novi, MI NPI 1568833614 Holly Metzger Clinical Social Worker · Novi, MI NPI 1003269036 Jessica Peters Professional Counselor · Novi, MI NPI 1508338229 Lindsay Darnell Clinical Social Worker · Novi, MI NPI 1427625409 Courtney Pickworth Counselor · Novi, MI NPI 1760054076 Chelsea Stone Mental Health Counselor · Novi, MI NPI 1124743729 Ruby Rizwan Mental Health Counselor · Novi, MI NPI 1780392985

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-11.