Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Jeffrey Slaney Williams Sr., O.D.
Optometrist in Riverhead, NY · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1225024490
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Registry record
Entity type Individual (Type 1)
Name Dr. Jeffrey Slaney Williams Sr.
Credential O.D.
Sex Male
Practice address 887 Old Country Rd, Suite K-L, Riverhead, NY, 11901
Phone (631) 727-2858
Fax (631) 727-2866
Enumeration date Sep 23, 2005
Last updated in NPPES Jan 8, 2013
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| C29481 | Other | - | MEDICARE ID |
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
How do I verify Jeffrey Williams's NPI record?
Cross-check NPI 1225024490 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1225024490 active?
Yes, as of the latest NPPES snapshot, NPI 1225024490 is active (record last updated 2013-01-08).
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-08.