Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. William Liao Chestnut, MSPT

Physical Therapist in Laurel, MD · enumerated 2007.

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

National Provider Identifier

1598899098

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mr. William Liao Chestnut

Credential MSPT

Sex Male

Practice address 13946 Baltimore Ave, Laurel, MD, 20707

Phone (301) 498-2213

Fax (301) 498-2213

Enumeration date Mar 15, 2007

Last updated in NPPES Mar 26, 2013

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 21041 (MD) 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

What specialty is William Chestnut?

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

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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-03-26.