Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Preston E Harrison, M.D.
Neurology Physician in Tyler, TX · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1184652141
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Registry record
Entity type Individual (Type 1)
Name Dr. Preston E Harrison
Credential M.D.
Sex Male
Practice address 1301 Doctors Dr, Tyler, TX, 75701
Phone (903) 597-3787
Fax (903) 593-4052
Enumeration date Jun 29, 2006
Last updated in NPPES Mar 7, 2023
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| G0029809 | Other | TX | DPS |
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.
Frequently asked questions
Where does Preston Harrison practice?
The practice location on file with NPPES is in Tyler, TX. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Preston Harrison?
The National Provider Identifier (NPI) for Preston Harrison is 1184652141, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Lester Collins Neurology Physician · Tyler, TX NPI 1750305710 Thomas H Alexander Jr Services Vascular Sonography Radiologic Technologist · Tyler, TX NPI 1538355268 East Texas Neurology Neurology Physician · Tyler, TX NPI 1841564929 Preston E Harrison Jr MD PA Neuromusculoskeletal Medicine & OMM Physician · Tyler, TX NPI 1396140547 Compass Neurology Neurology Physician · Tyler, TX NPI 1962997148
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.