Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Earl Ludwig, RPH

Pharmacist in Williamsville, NY · enumerated 2010.

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

National Provider Identifier

1629391941

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Registry record

Entity type Individual (Type 1)

Name Mark Earl Ludwig

Credential RPH

Sex Male

Practice address 1142 Wehrle Dr, Williamsville, NY, 14221

Phone (716) 631-3381

Enumeration date Mar 2, 2010

Last updated in NPPES Mar 2, 2010

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 031280-1 (NY) 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.

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Frequently asked questions

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.

What specialty is Mark Ludwig?

Mark Ludwig is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Woodmark Pharmacy Long Term Care Pharmacy · Williamsville, NY NPI 1629089289 Stacy Johnson Pharmacist · Williamsville, NY NPI 1407988926 Oxymed Services LLC Durable Medical Equipment & Medical Supplies · Williamsville, NY NPI 1184805269 Anne Hoffmann Pharmacist · Williamsville, NY NPI 1417183492 Maura Wychowski Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist · Buffalo, NY NPI 1356663470 Joann Hilburger Pharmacist · Williamsville, NY NPI 1801118609 Cheryl Harb Pharmacist · Williamsville, NY NPI 1912220005 Linda Wdzieczny Pharmacist · Williamsville, NY NPI 1255654182

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-03-02.