Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. David A Thomas, DO, PH.D.

Neurology Physician in Glen Mills, PA · enumerated 2006.

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

National Provider Identifier

1104870146

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. David A Thomas

Credential DO, PH.D.

Sex Male

Practice address 1788 Wilmington Pike, Suite 100, Glen Mills, PA, 19342

Phone (610) 744-2960

Fax (610) 744-2420

Enumeration date May 22, 2006

Last updated in NPPES Apr 28, 2026

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License OS004234L (PA) Primary

103G00000X Clinical Neuropsychologist Behavioral Health & Social Service Providers · License PS004113L (PA) Secondary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
004254D2E	Other	PA	MEDICARE NUMBER

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 David Thomas?

David Thomas is registered in NPPES with the primary taxonomy of Neurology Physician. 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 2026-04-28.