Stewart Mackie, M.D.
NPI 1558563551 · Pediatric Cardiology Physician · Springfield, MA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stewart Mackie, M.D. is a Pediatric Cardiology Physician provider in Springfield, MA (NPI 1558563551).
Provider details
- NPI number
- 1558563551
- Entity type
- Individual
- Primary specialty
- Pediatric Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- LP01101 (RI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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)
- 282 Washington StHartford, CT 06106-3322Phone: (860) 545-9400
Registry dates
- Enumerated
- 2007-06-01
- Last updated
- 2022-11-15
- Certified
- 2022-11-15
Frequently asked questions
- What is Stewart Mackie's NPI number?
- Stewart Mackie's National Provider Identifier (NPI) is 1558563551, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stewart Mackie's specialty?
- Stewart Mackie is listed in the NPPES registry with a primary specialty of Pediatric Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is Stewart Mackie located?
- Stewart Mackie's practice location on file with NPPES is 50 Wason Ave, Springfield, MA 01107-1274.
- What is Stewart Mackie's phone number?
- The practice phone number listed in the NPPES registry for Stewart Mackie is (413) 794-5437.
- Does Stewart Mackie accept Medicare?
- Stewart Mackie is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stewart Mackie's NPI active?
- Yes — Stewart Mackie's NPI (1558563551) is active in the NPPES registry as of the last update on 2022-11-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.