Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Steven W Williams, MD
Surgery Physician in Boise, ID · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1568451581
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Registry record
Entity type Individual (Type 1)
Name Steven W Williams
Credential MD
Sex Male
Practice address 8854 W Emerald St Ste 140, Boise, ID, 83704
Phone (208) 321-4790
Enumeration date Oct 21, 2005
Last updated in NPPES Jun 26, 2018
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 |
|---|---|---|---|
| 48975 | Other | ID | BLUE CROSS |
| 020052923 | Other | ID | RAILROAD MEDICARE |
| 806383500 | Medicaid | ID | - |
| 000010139022 | Other | ID | BLUE SHIELD |
| 000010139052 | Other | ID | BLUE SHIELD |
| J6675 | Other | ID | BLUE CROSS |
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 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 Steven Williams?
Steven Williams is registered in NPPES with the primary taxonomy of Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Timothy Neuschwander Orthopaedic Surgery Physician · Boise, ID NPI 1619124906 Daniel Gay Surgery Physician · Boise, ID NPI 1679716591 Andrea Parsons Physician Assistant · Boise, ID NPI 1730445719 Alvin Perry Surgery Physician · Boise, ID NPI 1427316942 Tesslyn Keim Physician Assistant · Boise, ID NPI 1376887547 Ryan Applonie Orthopaedic Surgery Physician · Boise, ID NPI 1104266444 Austen Slade Urology Physician · Boise, ID NPI 1467815530 Jon B Getz MD Pllc Surgery Physician · Boise, ID NPI 1831682434
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-06-26.