Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. William Ralph Sebastian, RPH

Psychiatric Pharmacist in Columbus, GA · enumerated 2006.

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

National Provider Identifier

1215025846

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Registry record

Entity type Individual (Type 1)

Name Mr. William Ralph Sebastian

Credential RPH

Sex Male

Practice address 4231 Macon Road, Columbus, GA, 31907

Phone (706) 563-6844

Fax (706) 563-0483

Enumeration date Oct 10, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 13352 (GA) Secondary

1835N1003X Nutrition Support Pharmacist Pharmacy Service Providers · License 13352 (GA) Secondary

1835P1200X Pharmacotherapy Pharmacist Pharmacy Service Providers · License 13352 (GA) Secondary

1835P1300X Psychiatric Pharmacist Pharmacy Service Providers · License 13352 (GA) Primary

RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH credential

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 is the NPI number for William Sebastian?

The National Provider Identifier (NPI) for William Sebastian is 1215025846, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Sebastian practice?

The practice location on file with NPPES is in Columbus, GA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.