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DR. WILLIAM ALLEN GILLESPIE MD
NPI 1013343334
Pediatrics in Durham, CT

Active since September 18, 2013PECOS Enrolled

NPPES record last updated: September 18, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. William Allen Gillespie Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM ALLEN GILLESPIE MD (NPI 1013343334) is an individual pediatrics provider in Durham, Connecticut, licensed in Connecticut (037591) and active in the NPI registry since September 2013. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1013343334
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDR. WILLIAM ALLEN GILLESPIECredential: MD
Location Address256 MAIN STDurham, CT 06422
Mailing Address256 Main StDurham, CT 06422 · (860) 349-9434
Phone(860) 349-9434
Sole ProprietorYes
Enumeration DateSeptember 18, 2013
✔ NPI 1013343334 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
Licenses✔ Licensed in CT · 037591✔ Licensed in NY · 7879548
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
256 MAIN ST, Durham, CT 06422
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William Allen Gillespie Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show William Gillespie reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Charter Oak Health Center, Inc.
19 mi
Federally Qualified Health Center (FQHC)
21 GRAND ST
Hartford, CT 06106
  • Reassigned Medicare billing, Connecticut enrollment
  • 107 clinicians in this Medicare group
NPI 1992750855 (860) 550-7500

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 06422 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
$93.86 typical visit price
range $60.82 – $183.10
Typical copayment $23.46 (range $15.20 – $45.77)
Most-billed visit code 99203
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 Gillespie's NPI number?

The NPI number for William Gillespie is 1013343334. It was assigned to this individual provider in the NPPES registry on September 18, 2013.

Where is William Gillespie located?

William Gillespie practices at 256 Main St, Durham, CT 06422. The listed phone number is (860) 349-9434.

What is William Gillespie's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is William Gillespie enrolled in Medicare?

Yes. William Gillespie is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for William Gillespie's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Gillespie reassigns Medicare benefits to Charter Oak Health Center, Inc. (Hartford, CT). The 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 Gillespie's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Gillespie accept?

Health plans from Anthem Blue Cross and Blue Shield list William Gillespie 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 Gillespie was last updated on September 18, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.