Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Travers Kirwan, PHD DMIN LCPC

Professional Counselor in Arnold, MD · enumerated 2006.

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

National Provider Identifier

1134282395

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Registry record

Entity type Individual (Type 1)

Name Dr. William Travers Kirwan

Credential PHD DMIN LCPC

Sex Male

Practice address 277 Peninsula Farm Road, Ste I Bayshore Counseling & Psychological Services LLC, Arnold, MD, 21012

Phone (410) 315-8253

Fax (410) 315-8256

Enumeration date Dec 19, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License LC1229 (MD) Primary

Other identifiers

Identifier	Type	State	Issuer
60581501	Other	-	BCBS OF MD

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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is William Kirwan?

William Kirwan is registered in NPPES with the primary taxonomy of Professional Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Lance David Professional Counselor · Arnold, MD NPI 1881757045

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.