Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William Baker Allen, MD
Specialist in Columbia, SC · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1700856218
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Registry record
Entity type Individual (Type 1)
Name William Baker Allen
Credential MD
Sex Male
Practice address 2435 Forest Dr, Columbia, SC, 29204
Phone (803) 254-5140
Fax (803) 779-1279
Enumeration date Jan 25, 2006
Last updated in NPPES Dec 30, 2011
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 |
|---|---|---|---|
| 099182 | Medicaid | SC | - |
| 330002031 | Other | SC | RAILROAD MEDICARE |
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
What specialty is William Allen?
William Allen is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.
Other providers at this practice address
Browse all → Providence Hospital, LLC General Acute Care Hospital · Columbia, SC NPI 1003811290 Lee Beckwith Anatomic Pathology & Clinical Pathology Physician · Columbia, SC NPI 1790761609 Cardiovascular Ansthesia, LLC Anesthesiology Physician · Columbia, SC NPI 1497726160 Joseph Modzelewski Anatomic Pathology & Clinical Pathology Physician · Columbia, SC NPI 1942272745 Elizabeth Wofford Anatomic Pathology & Clinical Pathology Physician · Columbia, SC NPI 1801868609 Providence Pathology Associates PA Anatomic Pathology & Clinical Pathology Physician · Columbia, SC NPI 1780656363 John Williams Anesthesiology Physician · Columbia, SC NPI 1932176815 Forest Evans Anesthesiology Physician · Columbia, SC NPI 1205805025
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-12-30.