Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William R Bast, MD
Urology Physician in Hanover, PA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1558368019
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Registry record
Entity type Individual (Type 1)
Name William R Bast
Credential MD
Sex Male
Practice address 100 Penn St, Hanover, PA, 17331
Phone (717) 632-3220
Fax (717) 632-3220
Enumeration date Jun 30, 2005
Last updated in NPPES Jun 12, 2008
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 |
|---|---|---|---|
| 158603X9S | Other | PA | MEDICARE PTAN |
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
Is NPI 1558368019 active?
Yes, as of the latest NPPES snapshot, NPI 1558368019 is active (record last updated 2008-06-12).
How do I verify William Bast's NPI record?
Cross-check NPI 1558368019 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Hanover Urology Associates Inc Urology Physician · Hanover, PA NPI 1093793549 Lawrence Freer Cardiovascular Disease Physician · Hanover, PA NPI 1750353983 Cornerstone Surgical, LLC Surgery Physician · Hanover, PA NPI 1588694640 Hanover Health Corporation, Inc. Primary Care Clinic/Center · Hanover, PA NPI 1396887634 Tracy Crook Surgical Assistant · Hanover, PA NPI 1700073764 Hanover Cardiology, LLC Cardiovascular Disease Physician · Hanover, PA NPI 1619354222
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-12.