NPI Portal NPI Lookup & Verification

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Dr. William Chambers Waller Jr., M.D.

Urology Physician in Rapid City, SD · enumerated 2005.

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

National Provider Identifier

1528069515

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Registry record

Entity type Individual (Type 1)
Name Dr. William Chambers Waller Jr.
Credential M.D.
Sex Male
Practice address 2805 5th St, 220, Rapid City, SD, 57701
Fax (605) 348-3256
Enumeration date Aug 2, 2005
Last updated in NPPES Feb 27, 2019

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License MD60933481 (WA) Secondary
208800000X Urology Physician Allopathic & Osteopathic Physicians · License 4033 (SD) Primary
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
111265100 Medicaid WY -
460350645 Medicaid NE -
7500090 Medicaid SD -

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 William Waller?
William Waller is registered in NPPES with the primary taxonomy of Urology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-02-27.