Ryan Hollien, DC
NPI 1821333212 · Chiropractor · Boston, MA
Enrolled with Medicare as Practitioner - Chiropractic · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Hollien, DC is a Chiropractor provider in Boston, MA (NPI 1821333212).
Provider details
- NPI number
- 1821333212
- Entity type
- Individual
- Primary specialty
- ChiropractorChiropractic Providers
- Credential
- DC
- Sex
- Male
- Sole proprietor
- No
- License
- 3649 (MA)
Specialties & taxonomies
Chiropractic Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 11 Bunton StMilton, MA 02186Phone: (617) 519-3607
Registry dates
- Enumerated
- 2012-12-11
- Last updated
- 2020-01-27
- Certified
- 2020-01-27
Frequently asked questions
- What is Ryan Hollien's NPI number?
- Ryan Hollien's National Provider Identifier (NPI) is 1821333212, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Hollien's specialty?
- Ryan Hollien is listed in the NPPES registry with a primary specialty of Chiropractor (Chiropractic Providers).
- Where is Ryan Hollien located?
- Ryan Hollien's practice location on file with NPPES is 212 Northern Ave, Boston, MA 02210-2089.
- What is Ryan Hollien's phone number?
- The practice phone number listed in the NPPES registry for Ryan Hollien is (617) 519-3607.
- Does Ryan Hollien accept Medicare?
- Ryan Hollien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Hollien's NPI active?
- Yes — Ryan Hollien's NPI (1821333212) is active in the NPPES registry as of the last update on 2020-01-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.