Mary Blackwell, MD
NPI 1538141965 · Neonatal-Perinatal Medicine Physician · Boston, MA
Mary Blackwell, MD is a Neonatal-Perinatal Medicine Physician provider in Boston, MA (NPI 1538141965).
Provider details
- NPI number
- 1538141965
- Entity type
- Individual
- Primary specialty
- Neonatal-Perinatal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- License
- 78516 (MA)
Specialties & taxonomies
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
20 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
- 2005-11-21
- Last updated
- 2025-09-11
Frequently asked questions
- What is Mary Blackwell's NPI number?
- Mary Blackwell's National Provider Identifier (NPI) is 1538141965, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Blackwell's specialty?
- Mary Blackwell is listed in the NPPES registry with a primary specialty of Neonatal-Perinatal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Blackwell located?
- Mary Blackwell's practice location on file with NPPES is Dowling 3 South One Boston Medical Center Place, Boston, MA 02118.
- What is Mary Blackwell's phone number?
- The practice phone number listed in the NPPES registry for Mary Blackwell is (617) 414-5170.
- Is Mary Blackwell's NPI active?
- Yes — Mary Blackwell's NPI (1538141965) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.