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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.

DR. JULIA XIAOYUAN YU MD
NPI 1497404172
Emergency Medicine in Oakland, CA

Active since March 21, 2022PECOS Enrolled
1411 E 31ST ST, OAKLAND, CA 94602(510) 437-4564 Get Directions Write a Review

NPPES record last updated: September 14, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Julia Xiaoyuan Yu Md NPPES

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

DR. JULIA XIAOYUAN YU MD (NPI 1497404172) is an individual emergency medicine provider in Oakland, California, licensed in California (189955) and active in the NPI registry since March 2022. She is enrolled in Medicare PECOS and is a graduate of Other (2022).

NPPES Registry Identity

NPI1497404172
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameDR. JULIA XIAOYUAN YUCredential: MD
Location Address1411 E 31ST STOakland, CA 94602-1092
Mailing Address22 Fairlee RdWaban, MA 02468-2036
Phone(510) 437-4564
Sole ProprietorYes
Medical School CMSOtherGraduated 2022
Enumeration DateMarch 21, 2022
Last NPPES UpdateSeptember 14, 2026
NPPES CertifiedSeptember 14, 2026
✔ NPI 1497404172 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in CA · 189955
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1411 E 31ST ST, Oakland, CA 94602
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Other Names 1

Professional Name (2)Robin Yu

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Julia Xiaoyuan Yu Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID2466918180
PECOS Enrollment IDI20260731004418
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 Julia Yu reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

California Emergency Associates A California Medical Corporation
9.7 mi
Emergency Medicine
845 JACKSON ST
San Francisco, CA 94133
  • Reassigned Medicare billing, California enrollment
  • 27 clinicians in this Medicare group
NPI 1437611936 (415) 677-2300

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 94602 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
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
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.

MS. YVONNE DIANE ESCARSEGA MSW
Social Worker (Clinical)
1411 E 31ST ST
OAKLAND, CA 94602
Alameda County (510) 437-4373
MR. JUAN CASILLAS JR. NP
Nurse Practitioner (Family)
1411 E 31ST ST
OAKLAND, CA 94602
Alameda County (510) 437-4800
SADHANA SAMANT MD
Obstetrics & Gynecology
1411 E 31ST ST, OAKCARE MEDICAL GROUP
OAKLAND, CA 94602
Alameda County (510) 437-4323
PATRICIA SCOTT MEYER PA
Clinical Nurse Specialist (Emergency)
1411 E 31ST ST
OAKLAND, CA 94602
Alameda County (209) 342-2300
NATHALIE BALOGUN MSW MPH
Social Worker (Clinical)
1411 E 31ST ST, ALAMEDA COUNTY MEDICAL CENTER - MEDICAL SOCAL WORK SRVC
OAKLAND, CA 94602
Alameda County (510) 437-4949
CYNTHIA MARIE ROWDEN RN
Registered Nurse (Ambulatory Care)
1411 E 31ST ST
OAKLAND, CA 94602
Alameda County (510) 437-4373
DR. KAYLA ENRIQUEZ MD
Emergency Medicine
1411 E 31ST ST
OAKLAND, CA 94602
Alameda County (510) 437-4564
DR. CHERYL LIN PARK M.D.
Surgery
1411 E 31ST ST
OAKLAND, CA 94602
Alameda County (510) 437-4743

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 Julia Yu's NPI number?

The NPI number for Julia Yu is 1497404172. It was assigned to this individual provider in the NPPES registry on March 21, 2022. The provider is also known as Robin Yu.

Where is Julia Yu located?

Julia Yu practices at 1411 E 31st St, Oakland, CA 94602. The listed phone number is (510) 437-4564.

What is Julia Yu's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Julia Yu enrolled in Medicare?

Yes. Julia Yu is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Julia Yu's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Julia Yu reassigns Medicare benefits to California Emergency Associates A California Medical Corporation (San Francisco, 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 Julia Yu'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 Julia Yu was last updated on September 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 47 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.