Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Robert Campbell Preston, DDS
Dentist in Gloucester, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1508889494
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Registry record
Entity type Individual (Type 1)
Name Dr. Robert Campbell Preston
Credential DDS
Sex Male
Practice address 9 E Dr Osman Babson Rd, Gloucester, MA, 01930
Phone (978) 281-1144
Fax (978) 281-1144
Enumeration date Jul 25, 2006
Last updated in NPPES Jul 8, 2007
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 Robert Preston?
Robert Preston is registered in NPPES with the primary taxonomy of Dentist. 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.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.