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DR. LILLIAN LEONG DO
NPI 1730251059
Family Medicine in Walnut Creek, CA

Active since November 14, 2006Opted out of Medicare · through Jan 12, 2028
1450 TREAT BLVD, SUITE 120B, WALNUT CREEK, CA 94597(925) 296-9720(925) 296-9034 Get Directions Write a Review

NPPES record last updated: April 2, 2014. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Lillian Leong Do NPPES

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

DR. LILLIAN LEONG DO (NPI 1730251059) is an individual family medicine provider in Walnut Creek, California, licensed in California (20A9598) and active in the NPI registry since November 2006. She has opted out of Medicare through January 12, 2028 and remains eligible to order and refer.

NPPES Registry Identity

NPI1730251059
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameDR. LILLIAN LEONGCredential: DO
Location Address1450 TREAT BLVD, SUITE 120BWalnut Creek, CA 94597-2168
Mailing AddressDept 34929, P.o. 39000San Francisco, CA 94139-0001 · (925) 952-2828 · Fax (925) 952-2850
Phone(925) 296-9720
Fax(925) 296-9034
Sole ProprietorNo
Enumeration DateNovember 14, 2006
Last NPPES UpdateApril 2, 2014
✔ NPI 1730251059 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · 20A9598
Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

1450 TREAT BLVD, Walnut Creek, CA 94597
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Other Identifiers 2

Medicaid00AX95980CA
Medicare PIN020A95981

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Lillian Leong Do has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from January 12, 2022 through January 12, 2028.

Opt-Out Effective DateJanuary 12, 2022
Opt-Out In Effect ThroughJanuary 12, 2028Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94597 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.

DR. PURNIMA G KUDLU M.D.
Pediatrics
1450 TREAT BLVD, SUITE 140
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9784
DR. DEVORAH E BEN-ZEEV M.D.
Internal Medicine
1450 TREAT BLVD, SUITE 120A
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9720
DR. JOHN T CHO M.D.
Family Medicine
1450 TREAT BLVD, SUITE 120B
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9720
DR. DEBORAH A GREER M.D.
Family Medicine
1450 TREAT BLVD, SUITE 160
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9000
DR. ELISE M. HUGHES-WATKINS M.D.
Internal Medicine
1450 TREAT BLVD, SUITE 250B
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9740
DR. ARTHUR K. LAW M.D.
Pediatrics
1450 TREAT BLVD, SUITE 140
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9770
DR. TIEN H LAM M.D.
Family Medicine
1450 TREAT BLVD, SUITE 120B
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9720
DR. TESSIE A OKAMURA M.D.
Pediatrics
1450 TREAT BLVD, SUITE 140
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9770

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 Lillian Leong's NPI number?

The NPI number for Lillian Leong is 1730251059. It was assigned to this individual provider in the NPPES registry on November 14, 2006.

Where is Lillian Leong located?

Lillian Leong practices at 1450 Treat Blvd Suite 120B, Walnut Creek, CA 94597. The listed phone number is (925) 296-9720.

What is Lillian Leong's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Lillian Leong enrolled in Medicare?

No. Lillian Leong has opted out of Medicare through January 12, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Lillian Leong was last updated on April 2, 2014. NPI Profile syncs with the weekly NPPES data releases published by CMS.