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Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Thomas S. Rosenbaum, Ph.D. & Assoc

Psychologist in Ann Arbor, MI · enumerated 2015 · authorized official Christy Delph, Office Manager.

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

National Provider Identifier

1689054595

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Registry record

Entity type Organization (Type 2)
Legal business name Thomas S. Rosenbaum, Ph.D. & Assoc
Practice address 2725 Packard St, Suite 101, Ann Arbor, MI, 48108
Phone (734) 677-0200
Enumeration date Jun 5, 2015
Last updated in NPPES Jun 5, 2015

Taxonomy & classification

103T00000X Psychologist Behavioral Health & Social Service Providers · License 6301001432 (MI) Primary

Authorized official

Name Christy Delph
Title Office Manager
Phone (734) 677-0200

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

What type of organization is Thomas S. Rosenbaum, Ph.D. & Assoc?
Thomas S. Rosenbaum, Ph.D. & Assoc is registered in NPPES as a Psychologist (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-06-05.