Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Ralph Peter Vandersloot, DDS, MS
Periodontics in Pleasanton, CA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1952304602
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Registry record
Entity type Individual (Type 1)
Name Dr. Ralph Peter Vandersloot
Credential DDS, MS
Sex Male
Practice address 5700 Stoneridge Mall Rd, Ste 290, Pleasanton, CA, 94588
Phone (925) 463-1450
Fax (925) 463-0838
Enumeration date May 24, 2005
Last updated in NPPES Jul 13, 2026
Taxonomy & licenses
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees.
About the DDS credential
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 Ralph Vandersloot?
Ralph Vandersloot is registered in NPPES with the primary taxonomy of Periodontics. 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 → Peggy Wynne Marriage & Family Therapist · Pleasanton, CA NPI 1518939339 Craig P Klooster Dpm PC Podiatrist · Pleasanton, CA NPI 1295843985 Lucille Guastella Periodontics · Pleasanton, CA NPI 1952441321 Express Medicine Urgent Care, Inc. Urgent Care Clinic/Center · Pleasanton, CA NPI 1578818696 Craig Klooster Podiatrist · Pleasanton, CA NPI 1568563575
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-13.