WILLIAM CHARLES OLCOTT
NPI 1114414828
Psychiatry & Neurology - Psychiatry in Middleboro, MA
About William Charles Olcott NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM CHARLES OLCOTT (NPI 1114414828) is an individual psychiatry provider in Middleboro, Massachusetts, licensed in Massachusetts (289465) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
William Charles Olcott is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show William Olcott reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02113
- Reassigned Medicare billing, Massachusetts enrollment
- 75 clinicians in this Medicare group
Belmont, MA 02478
- Reassigned Medicare billing, Massachusetts enrollment
- 422 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02346 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MIDDLEBORO, MA 02346
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is William Olcott's NPI number?
The NPI number for William Olcott is 1114414828. It was assigned to this individual provider in the NPPES registry on April 18, 2018.
Where is William Olcott located?
William Olcott practices at 23 Isaac St, Middleboro, MA 02346. The listed phone number is (774) 419-1169.
What is William Olcott's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is William Olcott enrolled in Medicare?
Yes. William Olcott is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for William Olcott's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Olcott reassigns Medicare benefits to 2 organizations: North End Community Health Committee Inc (Boston, MA) and The Mclean Hospital Corporation (Belmont, MA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Olcott's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Olcott accept?
Health plans from Harvard Pilgrim Health Care and WellSense Health Plan list William Olcott as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for William Olcott was last updated on July 19, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# William Charles Olcott · NPI 1114414828
Psychiatry physician in Middleboro, Massachusetts. Individual provider, active in the CMS NPPES registry since April 18, 2018.
## Identity
- **NPI:** 1114414828 (Entity type: Individual)
- **Enumerated:** April 18, 2018
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** 289465 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 23 ISAAC ST, Middleboro, MA 02346-2080
- **Phone:** (774) 419-1169
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): North End Community Health Committee Inc (NPI 1780606608, Boston, MA); The Mclean Hospital Corporation (NPI 1114979580, Belmont, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** July 19, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1114414828) · Data from the CMS NPPES public registry.