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NANCY NGOC GIAO LY MD, MPH
NPI 1598050205
Preventive Medicine - Occupational Medicine in Walnut Creek, CA

Active since June 10, 2011PECOS EnrolledAccepts Medicare Assignment
320 LENNON LN BLDG 3, WALNUT CREEK, CA 94598(925) 206-2000 Get Directions Write a Review

NPPES record last updated: February 11, 2022. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Feb 11, 2022, May 25, 2018 (2 updates tracked since 2018).

About Nancy Ngoc Giao Ly Md, Mph NPPES

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

NANCY NGOC GIAO LY MD, MPH (NPI 1598050205) is an individual occupational medicine provider in Walnut Creek, California, licensed in California (A153735) and active in the NPI registry since June 2011. She is enrolled in Medicare PECOS and is a graduate of Other (2011).

NPPES Registry Identity

NPI1598050205
Entity TypeIndividualFemale
Primary Taxonomy2083X0100X
Provider Legal NameNANCY NGOC GIAO LYCredential: MD, MPH
Location Address320 LENNON LN BLDG 3Walnut Creek, CA 94598
Mailing Address320 Lennon Ln Bldg 3Walnut Creek, CA 94598-2419 · (925) 906-2000
Phone(925) 206-2000
Sole ProprietorYes
Medical School CMSOtherGraduated 2011
Enumeration DateJune 10, 2011
Last NPPES UpdateFebruary 11, 20222 updates tracked since enumeration
✔ NPI 1598050205 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPreventive Medicine · Occupational MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2083X0100X
License✔ Licensed in CA · A153735
Definition
Occupational medicine focuses on the health of workers, including the ability to perform work; the physical, chemical, biological, and social environments of the workplace; and the health outcomes of environmental exposures. Practitioners in this field address the promotion of health in the work place, and the prevention and management of occupational and environmental injury, illness, and disability.
320 LENNON LN BLDG 3, Walnut Creek, CA 94598
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Nancy Ngoc Giao Ly Md, Mph is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9133476484
PECOS Enrollment IDI20180718002219
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 94598 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
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

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

DAVID FAN MD
Allergy & Immunology
320 LENNON LN BLDG 3
WALNUT CREEK, CA 94598
Contra Costa County (925) 906-2015

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 Nancy Ngoc Giao Ly's NPI number?

The NPI number for Nancy Ngoc Giao Ly is 1598050205. It was assigned to this individual provider in the NPPES registry on June 10, 2011.

Where is Nancy Ngoc Giao Ly located?

Nancy Ngoc Giao Ly practices at 320 Lennon Ln Bldg 3, Walnut Creek, CA 94598. The listed phone number is (925) 206-2000.

What is Nancy Ngoc Giao Ly's specialty?

The primary specialty registered for this NPI is Preventive Medicine, specializing in Occupational Medicine, with taxonomy code 2083X0100X.

Is Nancy Ngoc Giao Ly enrolled in Medicare?

Yes. Nancy Ngoc Giao Ly is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Nancy Ngoc Giao Ly was last updated on February 11, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.