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

ELISABETH SARAH YAN MD
NPI 1841933959
Pediatrics in Palo Alto, CA

Active since April 16, 2022PECOS Enrolled
725 WELCH RD, PALO ALTO, CA 94304(650) 497-8979 Get Directions Write a Review

NPPES record last updated: September 8, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 8, 2025, Jul 3, 2025, Apr 25, 2022 and 1 more (4 updates tracked since 2022).

About Elisabeth Sarah Yan Md NPPES

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

ELISABETH SARAH YAN MD (NPI 1841933959) is an individual pediatrics provider in Palo Alto, California, licensed in California (A190822) and active in the NPI registry since April 2022. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1841933959
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameELISABETH SARAH YANCredential: MD
Location Address725 WELCH RDPalo Alto, CA 94304-1601
Mailing Address725 Welch RdPalo Alto, CA 94304-1601 · (650) 497-8000
Phone(650) 497-8979
Sole ProprietorNo
Enumeration DateApril 16, 2022
Last NPPES UpdateSeptember 8, 20254 updates tracked since enumeration
NPPES CertifiedSeptember 8, 2025
✔ NPI 1841933959 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CA · A190822
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.

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Elisabeth Sarah Yan 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.

Medicare Billing Reassignments

3

Medicare enrollment records show Elisabeth Yan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

County Of Santa Clara
Clinic/Center
2100 FOREST AVE
San Jose, CA 95128
  • Reassigned Medicare billing, California enrollment
  • 2,460 clinicians in this Medicare group
NPI 1073265914 (408) 454-2626
Lpch Medical Group Div Of Lucile
Children
725 WELCH RD
Palo Alto, CA 94304
  • Reassigned Medicare billing, California enrollment
  • 3,617 clinicians in this Medicare group
NPI 1417907940 (650) 498-6762
Stanford Health Care
Radiation Oncology
5725 W LAS POSITAS BLVD, SUITE 100B
Pleasanton, CA 94588
  • Reassigned Medicare billing, California enrollment
  • 4,258 clinicians in this Medicare group
NPI 1124561758 (650) 723-4000

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 94304 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
$106.47 typical visit price
range $70.37 – $206.04
Typical copayment $26.61 (range $17.59 – $51.51)
Most-billed visit code 99203
Established Patient
$121.77 typical visit price
range $23.96 – $169.60
Typical copayment $30.44 (range $5.99 – $42.40)
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.

EIRI INENAGA MS, OTR/L
Occupational Therapist (Pediatrics)
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8218
WENDY LEIGH ADAMS ARNP
Nurse Practitioner (Neonatal)
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000
KEVIN WEI-HAN CHI MD
Pediatrics
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000
ASHEEN RAMA MD
Anesthesiology (Pediatric Anesthesiology)
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000
CRYSTAL LEE MACKALL MD
Pediatrics (Pediatric Hematology-Oncology)
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000
KRISTI LYNNE O'CONNOR OT
Occupational Therapist
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000
LAUREN GENNA ROOS NP
Nurse Practitioner
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000
SHALINI MITTAL MD
Hospitalist
725 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 497-8000

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 Elisabeth Yan's NPI number?

The NPI number for Elisabeth Yan is 1841933959. It was assigned to this individual provider in the NPPES registry on April 16, 2022.

Where is Elisabeth Yan located?

Elisabeth Yan practices at 725 Welch Rd, Palo Alto, CA 94304. The listed phone number is (650) 497-8979.

What is Elisabeth Yan's specialty?

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

Is Elisabeth Yan enrolled in Medicare?

Yes. Elisabeth Yan is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Elisabeth Yan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Elisabeth Yan reassigns Medicare benefits to 3 organizations: County Of Santa Clara (San Jose, CA), Lpch Medical Group Div Of Lucile (Palo Alto, CA) and Stanford Health Care (Pleasanton, 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 Elisabeth Yan'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 Elisabeth Yan was last updated on September 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.