GILES THOMAS KNOWLES
NPI 1104453968
Pediatrics in Phoenix, AZ

Q: What is Giles Knowles's NPI number?

The NPI number for Giles Knowles is 1104453968. It was assigned to this individual provider in the NPPES registry on March 23, 2020.

Q: What is Giles Knowles's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Giles Knowles was last updated on December 16, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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 March 23, 2020PECOS Enrolled

1919 E THOMAS RD, PHOENIX, AZ 85016(602) 933-1000 Get Directions Write a Review

NPPES record last updated: December 16, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 16, 2024, Mar 23, 2020 (2 updates tracked since 2020).

On this page

About Giles Thomas Knowles NPPES

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

GILES THOMAS KNOWLES (NPI 1104453968) is an individual pediatrics provider in Phoenix, Arizona, licensed in Arizona (010984) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1104453968

Entity TypeIndividualMale

Primary Taxonomy208000000X

Provider Legal NameGILES THOMAS KNOWLES

Location Address1919 E THOMAS RDPhoenix, AZ 85016-7710

Mailing Address2108 E Thomas Rd Ste 130Phoenix, AZ 85016-0008 · (602) 933-3124

Phone(602) 933-1000

Sole ProprietorYes

Enumeration DateMarch 23, 2020

Last NPPES UpdateDecember 16, 20242 updates tracked since enumeration

NPPES CertifiedDecember 16, 2024

✔ NPI 1104453968 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in AZ · 010984

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.

1919 E THOMAS RD, Phoenix, AZ 85016

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Giles Thomas Knowles 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 Giles Knowles reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Phoenix Children's Hospital

Same address

Pediatrics

1919 E THOMAS RD
Phoenix, AZ 85016

Reassigned Medicare billing, Arizona enrollment
1,416 clinicians in this Medicare group

NPI 1922112044 (602) 933-1000

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 85016 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

$85.89 typical visit price

range $55.44 – $168.60

Typical copayment $21.47 (range $13.86 – $42.15)

Most-billed visit code 99203

Established Patient

$98.00 typical visit price

range $17.72 – $137.41

Typical copayment $24.50 (range $4.43 – $34.35)

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.

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.

DR. TIMUR RAGHIB M.D.

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