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ERIC TSAY
NPI 1275911364
Pediatrics - Pediatric Endocrinology in Loma Linda, CA

Active since May 11, 2015PECOS Enrolled
11175 CAMPUS STREET, CP-A1120, LOMA LINDA, CA 92350(909) 558-4773 Get Directions Write a Review

NPPES record last updated: November 26, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 26, 2025, Jul 30, 2021, Oct 10, 2018 and 1 more (4 updates tracked since 2018).

About Eric Tsay NPPES

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

ERIC TSAY (NPI 1275911364) is an individual pediatric endocrinology provider in Loma Linda, California, licensed in California (A145318) and active in the NPI registry since May 2015. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1275911364
Entity TypeIndividualMale
Primary Taxonomy2080P0205X
Provider Legal NameERIC TSAY
Location Address11175 CAMPUS STREET, CP-A1120Loma Linda, CA 92350-1700
Mailing Address11175 Campus Street, Cp-a1120Loma Linda, CA 92350-1700 · (909) 558-4773
Phone(909) 558-4773
Sole ProprietorNo
Enumeration DateMay 11, 2015
Last NPPES UpdateNovember 26, 20254 updates tracked since enumeration
NPPES CertifiedNovember 26, 2025
✔ NPI 1275911364 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric EndocrinologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0205X
License✔ Licensed in CA · A145318
Definition
A pediatrician who provides expert care to infants, children and adolescents who have diseases that result from an abnormality in the endocrine glands (glands which secrete hormones). These diseases include diabetes mellitus, growth failure, unusual size for age, early or late pubertal development, birth defects, the genital region and disorders of the thyroid, the adrenal and pituitary glands.
11175 CAMPUS STREET, CP-A1120, Loma Linda, CA 92350
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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)

Eric Tsay 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 Reassignments

2

Medicare enrollment records show Eric Tsay reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Faculty Physicians And Surgeons Of Llusm
0.1 mi
Neurology
11234 ANDERSON ST, STE. A233
Loma Linda, CA 92354
  • Reassigned Medicare billing, California enrollment
  • 2,584 clinicians in this Medicare group
NPI 1801016860 (909) 558-2880
Sac Health System
3.6 mi
Federally Qualified Health Center (FQHC)
1454 E 2ND ST
San Bernardino, CA 92408
  • Reassigned Medicare billing, California enrollment
  • 455 clinicians in this Medicare group
NPI 1013935915 (909) 382-7100

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 92350 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
$136.04 typical visit price
range $59.60 – $179.42
Typical copayment $34.01 (range $14.90 – $44.85)
Most-billed visit code 99204
Established Patient
$104.64 typical visit price
range $19.37 – $146.42
Typical copayment $26.16 (range $4.84 – $36.60)
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 Eric Tsay's NPI number?

The NPI number for Eric Tsay is 1275911364. It was assigned to this individual provider in the NPPES registry on May 11, 2015.

Where is Eric Tsay located?

Eric Tsay practices at 11175 Campus Street, Cp-A1120, Loma Linda, CA 92350. The listed phone number is (909) 558-4773.

What is Eric Tsay's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Endocrinology, with taxonomy code 2080P0205X.

Is Eric Tsay enrolled in Medicare?

Yes. Eric Tsay is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Eric Tsay's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Eric Tsay reassigns Medicare benefits to 2 organizations: Faculty Physicians And Surgeons Of Llusm (Loma Linda, CA) and Sac Health System (San Bernardino, CA). Each 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 Eric Tsay'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 Eric Tsay was last updated on November 26, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.