Quick answers
- Where does John M. Griswold see patients?
- Medicare's clinician data lists 2 practice locations, including Owasso, OK and Tulsa, OK. Call before your visit to confirm the address.
- What is John M. Griswold's specialty?
- Medicare lists Chiropractic as the primary specialty.
- Does John M. Griswold accept Medicare assignment?
- Medicare's clinician data says John M. Griswold 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 John M. Griswold?
- (870) 213-7366, as listed in official Medicare / NPI Registry data.
- What is John M. Griswold's NPI number?
- 1407120199. 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 John M. Griswold is enrolled with Medicare (CMS data updated 2026-10-02).
- 12150 E 96th St N, Suite 100Owasso, OK 74055 (870) 213‑7366
- 702 S Utica AveTulsa, OK 74104 (918) 212‑8688
Group practices
Medicare enrollment lists John M. Griswold as a member of this group (CMS data updated 2026-10-02).
- 918 Chiropractic Owasso LLC2 clinicians in the group
Specialties
- Chiropracticprimary
Other chiropractors in Owasso
Clinicians with the same Medicare primary specialty in Owasso, OK — not a recommendation.
Clinician information
| Credential | CH |
|---|---|
| Medical school | Life Chiropractic College |
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1407120199 |
| 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