1. Home
  2. Directory
  3. California
  4. Orange
  5. Pediatrics
  6. NPI Profile

RAY HSU M.D.
NPI 1972807428
Pediatrics in Orange, CA

Active since December 27, 2010PECOS Enrolled
505 S MAIN ST STE 525, ORANGE, CA 92868(714) 456-5631 Get Directions Write a Review

NPPES record last updated: December 6, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Ray Hsu M.d. NPPES

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

RAY HSU M.D. (NPI 1972807428) is an individual pediatrics provider in Orange, California, licensed in California (A128881) and active in the NPI registry since December 2010. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1972807428
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameRAY HSUCredential: M.D.
Location Address505 S MAIN ST STE 525Orange, CA 92868-4553
Mailing Address505 S Main St Ste 525Orange, CA 92868-4553
Phone(714) 456-5631
Sole ProprietorNo
Enumeration DateDecember 27, 2010
Last NPPES UpdateDecember 6, 2021
✔ NPI 1972807428 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CA · A128881
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.
505 S MAIN ST STE 525, Orange, CA 92868
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ray Hsu M.d. 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 Ray Hsu reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southern California Permanente Medical Group
5.8 mi
Health Maintenance Organization
441 N LAKEVIEW AVE
Anaheim, CA 92807
  • Reassigned Medicare billing, California enrollment
  • 13,921 clinicians in this Medicare group
NPI 1952333460 (714) 279-4000

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 92868 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

LINDSEY LILL
Student in an Organized Health Care Education/Training Program
505 S MAIN ST STE 525
ORANGE, CA 92868
Orange County (714) 509-8547
ESTHER CHANG
Student in an Organized Health Care Education/Training Program
505 S MAIN ST STE 525
ORANGE, CA 92868
Orange County (925) 785-6878
LUKE YU MD
Student in an Organized Health Care Education/Training Program
505 S MAIN ST STE 525
ORANGE, CA 92868
Orange County (714) 456-5631
CHARISSA LAU
Student in an Organized Health Care Education/Training Program
505 S MAIN ST STE 525
ORANGE, CA 92868
Orange County (714) 509-8547
MARIA NGUYEN DO
Pediatrics
505 S MAIN ST STE 525
ORANGE, CA 92868
Orange County (714) 509-8547
REGINA TANG
Student in an Organized Health Care Education/Training Program
505 S MAIN ST STE 525
ORANGE, CA 92868
Orange County (714) 509-8547
DEAN TODD MD
Pediatrics
505 S MAIN ST STE 525
ORANGE, CA 92868
Orange County (714) 456-5631
KATHERINE ALOYSIUS KILLMOND
Pediatrics
505 S MAIN ST STE 525
ORANGE, CA 92868
Orange County (714) 456-5631

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 Ray Hsu's NPI number?

The NPI number for Ray Hsu is 1972807428. It was assigned to this individual provider in the NPPES registry on December 27, 2010.

Where is Ray Hsu located?

Ray Hsu practices at 505 S Main St Ste 525, Orange, CA 92868. The listed phone number is (714) 456-5631.

What is Ray Hsu's specialty?

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

Is Ray Hsu enrolled in Medicare?

Yes. Ray Hsu is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Ray Hsu's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ray Hsu reassigns Medicare benefits to Southern California Permanente Medical Group (Anaheim, CA). 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 Ray Hsu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Ray Hsu was last updated on December 6, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.