Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Charles Geegan Sahy, PHARMD

Pharmacist in Michigan City, IN · enumerated 2018.

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

National Provider Identifier

1255809844

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Registry record

Entity type Individual (Type 1)

Name Dr. William Charles Geegan Sahy

Credential PHARMD

Sex Male

Practice address 301 W Homer St, Michigan City, IN, 46360

Phone (219) 878-8300

Enumeration date Nov 13, 2018

Last updated in NPPES Nov 13, 2018

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 051.300016 (IL) Secondary

183500000X Pharmacist Pharmacy Service Providers · License 26026809A (IN) Primary

PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD 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

How do I verify William Sahy's NPI record?

Cross-check NPI 1255809844 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1255809844 active?

Yes, as of the latest NPPES snapshot, NPI 1255809844 is active (record last updated 2018-11-13).

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Christy Berrier Registered Dietitian · Michigan City, IN NPI 1154320406 Michelle Stevenson Registered Dietitian · Michigan City, IN NPI 1104827401 Joyce Beckner Registered Dietitian · Michigan City, IN NPI 1790787661 Richard Dobben Diagnostic Radiology Physician · Michigan City, IN NPI 1447252184 John Gerometta Anatomic Pathology & Clinical Pathology Physician · Michigan City, IN NPI 1285627174 Michigan City Radiologists, Inc Diagnostic Radiology Physician · Michigan City, IN NPI 1366492936 Albert Derubertis Physical Medicine & Rehabilitation Physician · Michigan City, IN NPI 1093762999 Jacqueline Henderson Emergency Medical Services (Emergency Medicine) Physician · Michigan City, IN NPI 1366482358

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-11-13.