Simon Selwyn, CNP
NPI 1821576935 · Psychiatric/Mental Health Nurse Practitioner · Waltham, MA
Simon Selwyn, CNP is a Psychiatric/Mental Health Nurse Practitioner provider in Waltham, MA (NPI 1821576935).
Provider details
- NPI number
- 1821576935
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CNP
- Sex
- Male
- Sole proprietor
- Yes
- License
- 2284419 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 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
- 2018-07-31
- Last updated
- 2024-03-25
- Certified
- 2024-03-25
Frequently asked questions
- What is Simon Selwyn's NPI number?
- Simon Selwyn's National Provider Identifier (NPI) is 1821576935, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Simon Selwyn's specialty?
- Simon Selwyn is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Simon Selwyn located?
- Simon Selwyn's practice location on file with NPPES is 465 Waverly Oaks Rd, Waltham, MA 02452-8438.
- What is Simon Selwyn's phone number?
- The practice phone number listed in the NPPES registry for Simon Selwyn is (617) 596-1975.
- Is Simon Selwyn's NPI active?
- Yes — Simon Selwyn's NPI (1821576935) is active in the NPPES registry as of the last update on 2024-03-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.