Melissa Williams, PNP
NPI 1821395617 · Pediatric Nurse Practitioner · Boston, MA
Melissa Williams, PNP is a Pediatric Nurse Practitioner provider in Boston, MA (NPI 1821395617).
Provider details
- NPI number
- 1821395617
- Entity type
- Individual
- Primary specialty
- Pediatric Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PNP
- Sex
- Female
- Sole proprietor
- No
- License
- 20100854 (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
15 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
- 2011-02-15
- Last updated
- 2011-02-15
Frequently asked questions
- What is Melissa Williams's NPI number?
- Melissa Williams's National Provider Identifier (NPI) is 1821395617, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Williams's specialty?
- Melissa Williams is listed in the NPPES registry with a primary specialty of Pediatric Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Melissa Williams located?
- Melissa Williams's practice location on file with NPPES is 1 Joslin Pl, Boston, MA 02215-5306.
- What is Melissa Williams's phone number?
- The practice phone number listed in the NPPES registry for Melissa Williams is (617) 309-4852.
- Is Melissa Williams's NPI active?
- Yes — Melissa Williams's NPI (1821395617) is active in the NPPES registry as of the last update on 2011-02-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.