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ELLEN LIAO PA-C
NPI 1417129156
Physician Assistant in San Francisco, CA

Active since April 01, 2008PECOS Enrolled
450 6TH AVE FL 5, SAN FRANCISCO, CA 94118(415) 833-2291 Get Directions Write a Review

NPPES record last updated: May 31, 2022. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Ellen Liao Pa-c NPPES

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

ELLEN LIAO PA-C (NPI 1417129156) is an individual physician assistant in San Francisco, California, licensed in California (PA19453) and active in the NPI registry since April 2008. She is enrolled in Medicare PECOS and maintains a secondary practice location in La Jolla.

NPPES Registry Identity

NPI1417129156
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameELLEN LIAOCredential: PA-C
Location Address450 6TH AVE FL 5San Francisco, CA 94118-3010
Mailing Address450 6th Ave Fl 5San Francisco, CA 94118-3010 · (415) 833-2291 · Fax (415) 833-2291
Phone(415) 833-2291
Sole ProprietorNo
Enumeration DateApril 1, 2008
Last NPPES UpdateMay 31, 2022
NPPES CertifiedMay 31, 2022
✔ NPI 1417129156 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 · PA19453
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.
450 6TH AVE FL 5, San Francisco, CA 94118
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Secondary Practice Location 1

Location 110710 N Torrey Pines RdLA Jolla, CA 92037-1035 · Phone (858) 554-7988

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ellen Liao 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 94118 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
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
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 3

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

MS. HEENA MEHTA PA-C
Physician Assistant (Surgical)
450 6TH AVE FL 5
SAN FRANCISCO, CA 94118
San Francisco County (415) 833-2784
DAVID JENG-PING YEN PA-C
Physician Assistant (Surgical)
450 6TH AVE FL 5
SAN FRANCISCO, CA 94118
San Francisco County (415) 833-2318
ASHLEY JO OAKLEY M.H.S, P.A.-C
Physician Assistant
450 6TH AVE FL 5
SAN FRANCISCO, CA 94118
San Francisco County (415) 833-5083

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 Ellen Liao's NPI number?

The NPI number for Ellen Liao is 1417129156. It was assigned to this individual provider in the NPPES registry on April 1, 2008.

Where is Ellen Liao located?

Ellen Liao practices at 450 6th Ave Fl 5, San Francisco, CA 94118. The listed phone number is (415) 833-2291.

What is Ellen Liao's specialty?

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

Is Ellen Liao enrolled in Medicare?

Yes. Ellen Liao is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Ellen Liao was last updated on May 31, 2022. NPI Profile syncs with the weekly NPPES data releases published by CMS.