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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

SAM LI-HSIEN TSAI MD
NPI 1104575414
Pediatrics - Pediatric Cardiology in Palo Alto, CA

Active since March 22, 2022PECOS Enrolled
750 WELCH RD STE 305, PALO ALTO, CA 94304(650) 497-8000 Get Directions Write a Review

NPPES record last updated: August 18, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Aug 18, 2026, Jul 28, 2026 (2 updates tracked since 2026).

About Sam Li-hsien Tsai Md NPPES

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

SAM LI-HSIEN TSAI MD (NPI 1104575414) is an individual pediatric cardiology provider in Palo Alto, California, licensed in California (A201042) and active in the NPI registry since March 2022. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1104575414
Entity TypeIndividualMale
Primary Taxonomy2080P0202X
Provider Legal NameSAM LI-HSIEN TSAICredential: MD
Location Address750 WELCH RD STE 305Palo Alto, CA 94304-1510
Mailing Address750 Welch Rd Ste 305Palo Alto, CA 94304-1510 · (650) 497-8000
Phone(650) 497-8000
Sole ProprietorNo
Enumeration DateMarch 22, 2022
Last NPPES UpdateAugust 18, 20262 updates tracked since enumeration
NPPES CertifiedAugust 18, 2026
✔ NPI 1104575414 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPediatrics · Pediatric CardiologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0202X
License✔ Licensed in CA · A201042
Definition
A pediatric cardiologist provides comprehensive care to patients with cardiovascular problems. This specialist is skilled in selecting, performing and evaluating the structural and functional assessment of the heart and blood vessels, and the clinical evaluation of cardiovascular disease.
Also ListedPediatricsTaxonomy 208000000X · License MD.MD.61289622 (WA)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
750 WELCH RD STE 305, Palo Alto, CA 94304
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Other Names 1

Professional Name (2)Sam L Tsai Md

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Sam Li-hsien Tsai Md 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.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

IMAN FAWAD M.B.,B.S.
Pediatrics (Pediatric Cardiology)
750 WELCH RD STE 305
PALO ALTO, CA 94304
Santa Clara County (650) 721-6849
KRISTEN LORRAINE SHEA MD
Student in an Organized Health Care Education/Training Program
750 WELCH RD STE 305
PALO ALTO, CA 94304
Santa Clara County (650) 497-8979
KRISTIN ANDRES MD
Pediatrics (Pediatric Cardiology)
750 WELCH RD STE 305
PALO ALTO, CA 94304
Santa Clara County (650) 721-6849

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 Sam Tsai's NPI number?

The NPI number for Sam Tsai is 1104575414. It was assigned to this individual provider in the NPPES registry on March 22, 2022. The provider is also known as Sam L Tsai MD.

Where is Sam Tsai located?

Sam Tsai practices at 750 Welch Rd Ste 305, Palo Alto, CA 94304. The listed phone number is (650) 497-8000.

What is Sam Tsai's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.

Is Sam Tsai enrolled in Medicare?

Yes. Sam Tsai is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Sam Tsai was last updated on August 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 days 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.