1. Home
  2. Directory
  3. California
  4. Tustin
  5. Physician Assistant
  6. NPI Profile

LYDIA YEEYEN LAU PA-C
NPI 1922629831
Physician Assistant in Tustin, CA

Active since May 01, 2020PECOS Enrolled
1 HOPE DR, TUSTIN, CA 92782(714) 247-0300(714) 259-1598 Get Directions Write a Review

NPPES record last updated: May 20, 2025. Verified against the NPPES registry weekly; last sync: September 06, 2026.

About Lydia Yeeyen Lau Pa-c NPPES

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

LYDIA YEEYEN LAU PA-C (NPI 1922629831) is an individual physician assistant in Tustin, California, licensed in California (PA58610) and active in the NPI registry since May 2020. She is enrolled in Medicare PECOS and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1922629831
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameLYDIA YEEYEN LAUCredential: PA-C
Location Address1 HOPE DRTustin, CA 92782-0221
Mailing Address14642 Newport Ave Ste 300Tustin, CA 92780-6059 · (714) 247-0300 · Fax (714) 259-1598
Phone(714) 247-0300
Fax(714) 259-1598
Sole ProprietorNo
Enumeration DateMay 1, 2020
Last NPPES UpdateMay 20, 2025
NPPES CertifiedMay 20, 2025
✔ NPI 1922629831 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in CA · PA58610
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
1 HOPE DR, Tustin, CA 92782
Open in Google Maps ↗

Secondary Practice Locations 3

Location 1947 S Anaheim Blvd Ste 260Anaheim, CA 92805-5591 · Phone (714) 247-0300 · Fax (714) 259-1598
Location 214642 Newport Ave Ste 200Tustin, CA 92780-6058 · Phone (714) 247-0300 · Fax (714) 259-1598
Location 31100B N Tustin Ave Ste ASanta Ana, CA 92705-3505 · Phone (714) 247-0300 · Fax (714) 259-1598

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Lydia Yeeyen Lau Pa-c 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92782 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
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
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.

ELIZABETH TRUJILLO RN
Registered Nurse
1 HOPE DR
TUSTIN, CA 92782
Orange County (714) 247-0300
KIMBERLY TORRES ACSW
Social Worker (Clinical)
1 HOPE DR
TUSTIN, CA 92782
Orange County (714) 247-0300
SILVIA CHOVIT ACSW
Social Worker (Clinical)
1 HOPE DR
TUSTIN, CA 92782
Orange County (714) 247-0300
VANESSA YVONNE SANTIAGO VO FNP
Nurse Practitioner (Family)
1 HOPE DR
TUSTIN, CA 92782
Orange County (714) 247-0300
RAFAEL CEJA OCHOA RDH
Dental Hygienist
1 HOPE DR
TUSTIN, CA 92782
Orange County (714) 247-0300
JONATHAN RAMONTY CHHEAN NP
Nurse Practitioner (Family)
1 HOPE DR
TUSTIN, CA 92782
Orange County (714) 247-0300
SUNEUN SARAH REICHERT DO
Family Medicine
1 HOPE DR
TUSTIN, CA 92782
Orange County (714) 247-0300
CATHRIN HEE LIM MD
Family Medicine
1 HOPE DR
TUSTIN, CA 92782
Orange County (714) 247-0300

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 Lydia Lau's NPI number?

The NPI number for Lydia Lau is 1922629831. It was assigned to this individual provider in the NPPES registry on May 1, 2020.

Where is Lydia Lau located?

Lydia Lau practices at 1 Hope Dr, Tustin, CA 92782. The listed phone number is (714) 247-0300.

What is Lydia Lau's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Lydia Lau enrolled in Medicare?

Yes. Lydia Lau is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Lydia Lau was last updated on May 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.