NPI Portal NPI Lookup & Verification

Dr. Mark M Tanny, DC

Dr. Mark M Tanny is a Chiropractor provider (Chiropractor) practicing in Northampton, MA, registered in the NPPES registry with NPI 1669541892 since 2006. The credential DC stands for Doctor of Chiropractic.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1669541892
Entity type Individual (Type 1)
Name Dr. Mark M Tanny
Credential DC
Sex Male
Practice address Northampton, MA, 01060
Phone 4135829111
Fax 4135820333
Enumeration date 2006-11-06
Last updated in NPPES 2007-07-08

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code Specialty Primary License State
111N00000X Chiropractor Primary 2074 MA

DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Copy-ready billing details
Provider: Mark Tanny, DC
NPI: 1669541892
Taxonomy: 111N00000X (Chiropractor)
Address: Northampton, MA, 01060

Other providers at this practice address

NPI Name Type Specialty Location
1588927404 Robin Drury Individual Chiropractor Northampton, MA
1922362839 Daniel Godbout Individual Chiropractor Northampton, MA

Verify this record

Cross-check NPI 1669541892 against the authoritative CMS record: view Dr. Mark M Tanny on the official NPPES registry .

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. Read the full guide or validate an NPI number.

Frequently asked questions

How do I verify Mark Tanny's NPI record?
Cross-check NPI 1669541892 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1669541892 active?
Yes — as of the latest NPPES snapshot, NPI 1669541892 is active (record last updated 2007-07-08).

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.