Ian Armstrong, MD
NPI 1619556453 · Diagnostic Radiology Physician · Boston, MA
Enrolled with Medicare as Order and Referring Only - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ian Armstrong, MD is a Diagnostic Radiology Physician provider in Boston, MA (NPI 1619556453).
Provider details
- NPI number
- 1619556453
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 1026333 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2021-04-07
- Last updated
- 2026-05-11
- Certified
- 2026-05-11
Frequently asked questions
- What is Ian Armstrong's NPI number?
- Ian Armstrong's National Provider Identifier (NPI) is 1619556453, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ian Armstrong's specialty?
- Ian Armstrong is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Ian Armstrong located?
- Ian Armstrong's practice location on file with NPPES is 55 Fruit St, Boston, MA 02114-2696.
- What is Ian Armstrong's phone number?
- The practice phone number listed in the NPPES registry for Ian Armstrong is (617) 726-8755.
- Does Ian Armstrong accept Medicare?
- Ian Armstrong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ian Armstrong's NPI active?
- Yes — Ian Armstrong's NPI (1619556453) is active in the NPPES registry as of the last update on 2026-05-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.