Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

William Louis Schneider, NP-C, RN

Individual provider Psychiatry Physician · NPI 1952466740

William Louis Schneider, NP-C, RN is a Psychiatry Physician in Somerville, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2006.

Licensed in
MA
In the registry since
2006
Specialties on file
3
What do these letters mean?
NP-C — Nurse Practitioner, Certified
A nurse practitioner certified by the AANP.
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

26 Central St
Somerville, MA 02143-2827
Phone: (617) 591-6454
Fax: (617) 591-6405
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence F0898362 (MA)
Psychiatry Physician Taxonomy 2084P0800X · Licence 202114 (MA)
Case Management Registered Nurse Taxonomy 163WC0400X · Licence 202114 (MA)

Record details

NPI number1952466740
Entity typeIndividual (Type 1)
GenderMale
Credentials NP-C , RN
Sole proprietorNo
NPI enumeratedDecember 22, 2006
Last updated in NPPESJuly 31, 2026
Certification dateJuly 31, 2026

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients110
Services billed 338 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Other providers in Somerville