Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Hal Marshall Dym, D.M.D.
Dentist in East Hartford, CT · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1811109317
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Registry record
Entity type Individual (Type 1)
Name Dr. Hal Marshall Dym
Credential D.M.D.
Sex Male
Practice address 170 Main Street, East Hartford, CT, 06118
Phone (860) 568-3366
Fax (860) 569-3421
Enumeration date May 4, 2007
Last updated in NPPES Jul 17, 2020
Taxonomy & licenses
DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees.
About the DMD 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
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 Hal Dym?
Hal Dym 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.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-07-17.