Ian Macarthur, MD, PHD
NPI 1366381949 · Student in an Organized Health Care Education/Training Program · Baltimore, MD
Ian Macarthur, MD, PHD is a Student in an Organized Health Care Education/Training Program provider in Baltimore, MD (NPI 1366381949).
Provider details
- NPI number
- 1366381949
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
83% 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
- 2026-03-27
- Last updated
- 2026-03-27
- Certified
- 2026-03-27
Frequently asked questions
- What is Ian Macarthur's NPI number?
- Ian Macarthur's National Provider Identifier (NPI) is 1366381949, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ian Macarthur's specialty?
- Ian Macarthur is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Ian Macarthur located?
- Ian Macarthur's practice location on file with NPPES is 1800 Orleans St, Baltimore, MD 21287-0010.
- What is Ian Macarthur's phone number?
- The practice phone number listed in the NPPES registry for Ian Macarthur is (410) 955-5000.
- Is Ian Macarthur's NPI active?
- Yes — Ian Macarthur's NPI (1366381949) is active in the NPPES registry as of the last update on 2026-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.