Mary Sylvia, RN,MS,FNP-BC
NPI 1477710960 · Family Nurse Practitioner · Boston, MA
Mary Sylvia, RN,MS,FNP-BC is a Family Nurse Practitioner provider in Boston, MA (NPI 1477710960).
Provider details
- NPI number
- 1477710960
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- RN,MS,FNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- 153726 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
- 2008-05-21
- Last updated
- 2008-05-21
Frequently asked questions
- What is Mary Sylvia's NPI number?
- Mary Sylvia's National Provider Identifier (NPI) is 1477710960, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Sylvia's specialty?
- Mary Sylvia is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Sylvia located?
- Mary Sylvia's practice location on file with NPPES is 300 Longwood Ave, Boston, MA 02115-5724.
- What is Mary Sylvia's phone number?
- The practice phone number listed in the NPPES registry for Mary Sylvia is (617) 355-5226.
- Is Mary Sylvia's NPI active?
- Yes — Mary Sylvia's NPI (1477710960) is active in the NPPES registry as of the last update on 2008-05-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.