Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Anne Arundel Pathology Services, LLC

Anatomic Pathology & Clinical Pathology Physician in Annapolis, MD · enumerated 2006 · authorized official William Weisburger, President.

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

National Provider Identifier

1821162181

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Registry record

Entity type Organization (Type 2)

Legal business name Anne Arundel Pathology Services, LLC

Practice address 2001 Medical Pkwy, Annapolis, MD, 21401

Phone (443) 481-4250

Fax (443) 481-4221

Enumeration date Nov 20, 2006

Last updated in NPPES Oct 25, 2007

Taxonomy & classification

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name William Weisburger

Title President

Phone (443) 481-4250

Other identifiers

Identifier	Type	State	Issuer
N154	Other	DC	GHI
481CAN	Other	MD	BLUE SHIELD
DE2416	Other	MD	RAILROAD MEDICARE

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

What type of organization is Anne Arundel Pathology Services, LLC?

Anne Arundel Pathology Services, LLC is registered in NPPES as a Anatomic Pathology & Clinical Pathology Physician (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 2007-10-25.