WILLIAM LEACH MD
NPI 1114546785
Internal Medicine - Infectious Disease in Manchester, CT

Q: 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.

Q: What is William Leach's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Q: 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 13 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.

Active since April 13, 2020PECOS EnrolledAccepts Medicare Assignment

18 HAYNES ST FL 2, MANCHESTER, CT 06040(860) 874-9372 Get Directions Write a Review

NPPES record last updated: June 27, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jun 27, 2025, Apr 13, 2020 (2 updates tracked since 2020).

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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

NPI1114546785

Entity TypeIndividualMale

Primary Taxonomy207RI0200X

Provider Legal NameWILLIAM LEACHCredential: MD

Location Address18 HAYNES ST FL 2Manchester, CT 06040-4111

Mailing Address18 Haynes St Fl 2Manchester, CT 06040-4111 · (860) 874-9372 · Fax (860) 812-1860

Phone(860) 874-9372

Sole ProprietorNo

Medical School CMSOtherGraduated 2019

Enumeration DateApril 13, 2020

Last NPPES UpdateJune 27, 20252 updates tracked since enumeration

NPPES CertifiedJune 27, 2025

✔ NPI 1114546785 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RI0200X

License✔ Licensed in CT · 82262

Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

18 HAYNES ST FL 2, Manchester, CT 06040

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

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.

PECOS PAC ID3173021128

PECOS Enrollment IDI20250809000386

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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.

New Patient

$138.84 typical visit price

range $60.82 – $183.10

Typical copayment $34.71 (range $15.20 – $45.77)

Most-billed visit code 99204

Established Patient

$106.68 typical visit price

range $19.76 – $149.26

Typical copayment $26.67 (range $4.94 – $37.31)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

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 13 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.