WILLIAM NEIL PEARSON MD
NPI 1255374112
Internal Medicine - Cardiovascular Disease in Southbury, CT
About William Neil Pearson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM NEIL PEARSON MD (NPI 1255374112) is an individual cardiovascular disease provider in Southbury, Connecticut, licensed in Connecticut (25203) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Connecticut School Of Medicine (1981).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 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 and accepts Medicare assignment
William Neil Pearson Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show William Pearson reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Southbury, CT 06488
- Reassigned Medicare billing, Connecticut enrollment
- 22 clinicians in this Medicare group
Waterbury, CT 06708
- Reassigned Medicare billing, Connecticut enrollment
- 19 clinicians in this Medicare group
Derby, CT 06418
- Reassigned Medicare billing, Connecticut enrollment
- 77 clinicians in this Medicare group
Hartford, CT 06106
- Reassigned Medicare billing, Connecticut enrollment
- 1,921 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 10
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 06488 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.
Reported Quality Measures
Other Providers at the Same Location NPPES 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SOUTHBURY, CT 06488
SOUTHBURY, CT 06488
SOUTHBURY, CT 06488
SOUTHBURY, CT 06488
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 Pearson's NPI number?
The NPI number for William Pearson is 1255374112. It was assigned to this individual provider in the NPPES registry on June 14, 2006.
Where is William Pearson located?
William Pearson practices at 30 Quaker Farms Rd, Southbury, CT 06488. The listed phone number is (203) 264-5911.
What is William Pearson's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is William Pearson enrolled in Medicare?
Yes. William Pearson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for William Pearson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Pearson reassigns Medicare benefits to 4 organizations: Diagnostic Imaging Of Southbury (Southbury, CT), Diagnostic Imaging Associates LLC (Waterbury, CT), The Griffin Hospital (Derby, CT) and Hartford Healthcare Medical Group Specialists, PLLC (Hartford, CT). 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 Pearson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Pearson accept?
Health plans from Anthem Blue Cross and Blue Shield list William Pearson 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 Pearson was last updated on December 12, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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 Neil Pearson, MD · NPI 1255374112
Cardiovascular Disease physician in Southbury, Connecticut. Individual provider, active in the CMS NPPES registry since June 14, 2006.
## Identity
- **NPI:** 1255374112 (Entity type: Individual)
- **Enumerated:** June 14, 2006
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** 25203 (Connecticut)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 30 QUAKER FARMS RD, Southbury, CT 06488-2732
- **Phone:** (203) 264-5911 · **Fax:** (203) 264-9177
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Diagnostic Imaging Of Southbury (NPI 1245252824, Southbury, CT); Diagnostic Imaging Associates LLC (NPI 1336161918, Waterbury, CT); The Griffin Hospital (NPI 1184639973, Derby, CT); Hartford Healthcare Medical Group Specialists, PLLC (NPI 1023584216, Hartford, CT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Connecticut School Of Medicine, class of 1981
## Record status
- **NPPES last updated:** December 12, 2017
- **Other identifiers:** Other 060000345 (CT); Medicaid 1252030 (CT)
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Source: [NPI Profile](https://npiprofile.com/npi/1255374112) · Data from the CMS NPPES public registry.