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Dr. William S Hamra , MD

Pediatrics β€’ Riverside, CA

Active NPI 1134445596 Individual Practitioner Male Practitioner Accepts Medicare assignment
Practice location in NPPES

6405 Day St
Riverside, CA 925070901

Call 9516975432 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

6405 Day St

Riverside, CA 925070901

Telephone 9516975432
Fax 9516975471
Organization at the Same NPPES Address or Phone
Riverside Medical Clinic, Inc Facility NPI 1780782557

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

NPPES lists 1 additional practice-address record in Loma Linda, CA. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

CMS Doctors and Clinicians lists 1 group name: Riverside Medical Clinic Inc. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

Loma Linda University School Of Medicine

Graduation Year

2010

Industry payments (Open Payments)

Fewer than 11 payment records totaling $20.82 in 2025

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2025.

Guide: How to read an Open Payments record

Years since graduation

16 years (graduated 2010)

CMS Doctors and Clinicians data list 2010 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2010

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.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

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, β€œDoes your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

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.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Hamra 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.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Hamra 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.

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.

Guide: What ordering and referring status means

Compared with the same specialty in Riverside and California

89 active clinicians are listed under Pediatrics with a practice address in Riverside, CA (9,280 in California).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Riverside

0% of these 89 clinicians have the CMS telehealth indicator.

4.5% of these 89 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo Β· Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments Β· Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $20.82.

Manufacturer Payment Nature Product Type Amount ($)
Sanofi Pasteur Inc.
Food and Beverage
In-kind items and services
FLUZONE QUADRIVALENT NORTHERN HEMISPHERE General $20.82

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2025-04-14
Pediatrics Primary Specialty

NUCC Taxonomy Code: 208000000X

License # reported to NPPES CA A120675

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.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Medical Board of California.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - PEDIATRIC MEDICINE

Medicare Enrollment ID

I20130806000548

Enrollment State Jurisdiction

CA

PECOS Control ID

4082856927

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Riverside Medical Clinic Inc

6405 Day St, Riverside, CA 925070901

Phone: 9516975556

Secondary Practice Locations

11234 Anderson St, Gme Office Cp 21005

Loma Linda, CA 923542804

Phone: 9095833850

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

30 listed
Dr. Bradley Andersen , MD

Internal Medicine - Rheumatology

NPI 1528018470

Doctor of Medicine (M.D.)

Dr. David Berke , DO

Obstetrics & Gynecology

NPI 1235372335

Doctor of Osteopathic Medicine (D.O.)

Dr. Archana Bhanu , MD

Family Medicine

NPI 1598748402

Doctor of Medicine (M.D.)

Dr. Lee Blanton , MD

Orthopaedic Surgery

NPI 1417262957

Doctor of Medicine (M.D.)

Dr. Keolanui Chun , MD

Orthopaedic Surgery

NPI 1578507463

Doctor of Medicine (M.D.)

NPI 1033371844

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

9 Historical Events
πŸ“
Updated Practice Location September 13, 2024

Registered at 6405 DAY ST, RIVERSIDE, CA 925070901 (Tel: 9516975432)

πŸ“
Updated Business Mailing Address September 13, 2024

Registered at 6405 DAY ST, RIVERSIDE, CA 925070901 (Tel: 9516975432)

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) April 19, 2018

Pediatrics (license number reported to NPPES: CA A120675)

βœ…
NPI Profile Active April 10, 2010

NPI status registered as active in NPPES database

πŸ“
Practice Location (Initial Record) April 10, 2010

Registered at 11234 ANDERSON ST, GME OFFICE CP 21005, LOMA LINDA, CA 923542804 (Tel: 9095833850)

πŸ“
Business Mailing Address (Initial Record) April 10, 2010

Registered at 11234 ANDERSON ST, GME OFFICE CP 21005, LOMA LINDA, CA 923542804

πŸ‘€
Provider Name / Credentials (Initial Record) April 10, 2010

Recorded as WILLIAM HAMRA, M.D.

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) April 10, 2010

Student in an Organized Health Care Education/Training Program

🟒
Initial NPI Registration & Enumeration April 10, 2010

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1134445596
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: April 10, 2010
Last Update: April 14, 2025
Sole Proprietor: No

Other Pediatrics Specialists in Riverside

All Pediatrics Specialists in Riverside

Mailing Address

6405 Day St

Riverside, CA 925070901

Phone: 9516975432

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.