Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Collaborative Counseling Tms

Child & Adolescent Psychiatry Physician in Columbia, MD · enumerated 2018 · authorized official Brett Greenberger, Medical Director.

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

National Provider Identifier

1942777305

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Registry record

Entity type Organization (Type 2)

Legal business name Collaborative Counseling Tms

Other name <Unavail>

Practice address 8820 Columbia 100 Pkwy Ste 201, Columbia, MD, 21045

Phone (443) 546-1100

Fax (443) 546-4005

Enumeration date Oct 24, 2018

Last updated in NPPES Feb 13, 2026

Taxonomy & classification

2084P0804X Child & Adolescent Psychiatry Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Brett Greenberger

Title Medical Director

Phone (443) 546-1100

Other identifiers

Identifier	Type	State	Issuer
1073591558	Other	MD	DR. BRETT GREENBERGER
1891946810	Other	MD	DR. CONSTANCE FLANAGAN

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 current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2026-02-13. Verify at npiregistry.cms.hhs.gov.

Where is Collaborative Counseling Tms located?

The practice location on file with NPPES is in Columbia, MD.

Providers at this address

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Brett Greenberger Psychiatry Physician · Columbia, MD NPI 1073591558

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-13.