Quick answers
- Where does Ryan P. Hollien see patients?
- Medicare's clinician data lists 1 practice location in Boston, MA. Call before your visit to confirm the address.
- What is Ryan P. Hollien's specialty?
- Medicare lists Chiropractic as the primary specialty.
- Does Ryan P. Hollien accept Medicare assignment?
- Yes. Medicare's clinician data says Ryan P. Hollien accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Ryan P. Hollien?
- (617) 519-3607, as listed in official Medicare / NPI Registry data.
- What is Ryan P. Hollien's NPI number?
- 1821333212. 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 Ryan P. Hollien is enrolled with Medicare (CMS data updated 2026-10-02).
- 212 Northern AveBoston, MA 02210 (617) 519‑3607
Specialties
- Chiropracticprimary
Other chiropractors in Boston
Clinicians with the same Medicare primary specialty in Boston, MA — not a recommendation.
Clinician information
| Credential | CH |
|---|---|
| Medical school | New York Chiropractic College |
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821333212 |
| 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