WILLIAM LEACH MD
NPI 1114546785
Internal Medicine - Infectious Disease in Manchester, CT
About William Leach Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM LEACH MD (NPI 1114546785) is an individual infectious disease provider in Manchester, Connecticut, licensed in Connecticut (82262) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS and is a graduate of Other (2019).
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 and accepts Medicare assignment
William Leach 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
2Medicare enrollment records show William Leach reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Manchester, CT 06040
- Reassigned Medicare billing, Connecticut enrollment
- 422 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 06040 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Leach's NPI number?
The NPI number for William Leach is 1114546785. It was assigned to this individual provider in the NPPES registry on April 13, 2020.
Where is William Leach located?
William Leach practices at 18 Haynes St Fl 2, Manchester, CT 06040. The listed phone number is (860) 874-9372.
What is William Leach's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.
Is William Leach enrolled in Medicare?
Yes. William Leach 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 Leach's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Leach reassigns Medicare benefits to 2 organizations: Prospect Ct Medical Foundation, Inc. (Manchester, 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 Leach's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Leach accept?
Health plans from Anthem Blue Cross and Blue Shield list William Leach 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 Leach was last updated on June 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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 Leach, MD · NPI 1114546785
Infectious Disease physician in Manchester, Connecticut. Individual provider, active in the CMS NPPES registry since April 13, 2020.
## Identity
- **NPI:** 1114546785 (Entity type: Individual)
- **Enumerated:** April 13, 2020
- **Primary specialty:** Internal Medicine - Infectious Disease · taxonomy 207RI0200X
- **State license:** 82262 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 18 HAYNES ST FL 2, Manchester, CT 06040-4111
- **Phone:** (860) 874-9372
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Prospect Ct Medical Foundation, Inc. (NPI 1144677568, Manchester, CT); Hartford Healthcare Medical Group Specialists, PLLC (NPI 1023584216, Hartford, CT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** June 27, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1114546785) · Data from the CMS NPPES public registry.