Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark Joseph Ellis, DC
Chiropractor in Rochester, NH · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1174661672
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Registry record
Entity type Individual (Type 1)
Name Dr. Mark Joseph Ellis
Credential DC
Sex Male
Practice address 41 Western Avenue, Rochester, NH, 03867
Phone (603) 335-1190
Enumeration date Feb 5, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders.
About the DC 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 is the NPI number for Mark Ellis?
The National Provider Identifier (NPI) for Mark Ellis is 1174661672, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Ellis practice?
The practice location on file with NPPES is in Rochester, NH. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.