Giles Thomas Knowles
Pediatrics β’ Phoenix, AZ
1919 E Thomas Rd
Phoenix, AZ 850167710
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on March 23, 2020; this date does not establish years in practice.
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Published CMS data list 48 Medicare Part D prescriptions, including refills, in 2023.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2023. Published rows only; this is not a quality measure.
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Published Part D records, 2023:
- Carvedilol β 14 prescription fills, including refills.
- Entresto (Sacubitril/Valsartan) β 12 prescription fills, including refills.
- Trazodone Hcl β 11 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2023. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 4 records in the table Β· Guide: How to read Medicare Part D prescriber data
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Medicare Part D prescriptions went from 26 in 2022 to 48 in 2023.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2022β2023.
Practice Location & Contact Primary Location
1919 E Thomas Rd
Phoenix, AZ 850167710
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Pediatrics: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
72 standardized 30-day fills in 2023
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$10,441 in 2023
The total cost of these prescriptions in 2023, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2023.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019β2025.
NPI first issued
2020
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Giles Knowles has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Giles Knowles as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Phoenix and Arizona
Billing and prescribing volume is not a quality rating.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Giles Knowles are from 2023.
422 active clinicians are listed under Pediatrics with a practice address in Phoenix, AZ (1,310 in Arizona).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Phoenix
0.2% of these 422 clinicians have the CMS telehealth indicator.
6.4% of these 422 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 85% from 26 in 2022 to 48 in 2023.
- 2022: 26
- 2023: 48
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30-day fills
30-day fills increased 44% from 50 in 2022 to 72 in 2023.
- 2022: 50
- 2023: 72
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Part D drug cost
Part D drug cost went from $429 in 2022 to $10,441 in 2023.
- 2022: $429
- 2023: $10,441
Sources: CMS Medicare Part D Prescribers (2023), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2023.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Carvedilol | Carvedilol | 14 | 540 | $200.64 | β |
| Entresto | Sacubitril/Valsartan | 12 | 420 | $9,997.21 | β |
| Trazodone Hcl | Trazodone Hcl | 11 | 580 | $81.34 | β |
| Duloxetine Hcl | Duloxetine Hcl | 11 | 570 | $161.72 | β |
Source: CMS Part D by Provider and Drug, 2023; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2024-12-16NUCC Taxonomy Code: 208000000X
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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - EMERGENCY MEDICINE
I20241204003499
AZ
8022544717
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Surgery - Surgical Critical Care
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1919 E THOMAS RD, PHOENIX, AZ 850167710 (Tel: 6029331000)
Registered at 2108 E THOMAS RD STE 130, PHOENIX, AZ 850160008 (Tel: 6029333124)
Pediatrics (license number reported to NPPES: AZ 010984)
NPI status registered as active in NPPES database
Registered at 1 MEDICAL CENTER DR, MORGANTOWN, WV 265061200 (Tel: 3042931224)
Registered at 1 MEDICAL CENTER DR, MORGANTOWN, WV 265061200 (Tel: 3042931224)
Recorded as GILES KNOWLES
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Pediatrics Specialists in Phoenix
- Dr. Troy Nelson, MD
- Dr. Daniel Tinlin, MD
- Dr. Diane Matsumoto, MD
- Dr. Elmira Pashayeva, MD
- Dr. John Kariuki, MD
- Dr. Sarah Bannister, DO
Mailing Address
2108 E Thomas Rd Ste 130
Phoenix, AZ 850160008
Phone: 6029333124