Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Mark Joseph Tobias, DC
Chiropractor in Ann Arbor, MI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1427090299
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Registry record
Entity type Individual (Type 1)
Name Mr. Mark Joseph Tobias
Credential DC
Sex Male
Practice address 6276 Jackson Rd, #D, Ann Arbor, MI, 48103
Phone (734) 995-8770
Fax (734) 995-7201
Enumeration date Jun 13, 2006
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
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 Mark Tobias?
Mark Tobias is registered in NPPES with the primary taxonomy of Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Thomas O'Brien Internal Medicine Physician · Ann Arbor, MI NPI 1033188545 Janet Ho Chiropractor · Ann Arbor, MI NPI 1184666976 Mary Greiner Family Medicine Physician · Ann Arbor, MI NPI 1467483024 Chelsea Area Primary Care Pllc Internal Medicine Physician · Ann Arbor, MI NPI 1245435486 Health Solutions Family Practice Pllc General Practice Physician · Ann Arbor, MI NPI 1194909689 Shariff Pllc Dentist · Ann Arbor, MI NPI 1245577790 Shannon Atwell Chiropractor · Ann Arbor, MI NPI 1770394975
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.