Quick answers
- Where does Mark Haynes see patients?
- Medicare's clinician data lists 1 practice location in Billings, MT. Call before your visit to confirm the address.
- What is Mark Haynes's specialty?
- Medicare lists Chiropractic as the primary specialty.
- Does Mark Haynes accept Medicare assignment?
- Medicare's clinician data says Mark Haynes may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Mark Haynes?
- (406) 655-4940, as listed in official Medicare / NPI Registry data.
- What is Mark Haynes's NPI number?
- 1013933001. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Mark Haynes is enrolled with Medicare (CMS data updated 2026-10-02).
- 670 King Park Dr, Suite 1Billings, MT 59102 (406) 655‑4940
Group practices
Medicare enrollment lists Mark Haynes as a member of this group (CMS data updated 2026-10-02).
- Mark J Haynes a Professional Chiropractic Corporation2 clinicians in the group
Specialties
- Chiropracticprimary
Other chiropractors in Billings
Clinicians with the same Medicare primary specialty in Billings, MT — not a recommendation.
Clinician information
| Credential | DC |
|---|---|
| Medical school | Cleveland Chiropractic College - Los Angeles |
| Graduation year | 1996 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1013933001 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians