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MARY ELLEN LILES LEMIEUX J.D., LCSW
NPI 1134517600
Social Worker - Clinical in Palo Alto, CA

Active since January 06, 2015PECOS EnrolledAccepts Medicare Assignment
518 HAMILTON AVE, PALO ALTO, CA 94301(650) 346-7698 Get Directions Write a Review

NPPES record last updated: October 26, 2023. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mary Ellen Liles Lemieux J.d., Lcsw NPPES

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

MARY ELLEN LILES LEMIEUX J.D., LCSW (NPI 1134517600) is an individual clinical provider in Palo Alto, California, licensed in California (73557) and active in the NPI registry since January 2015. She is enrolled in Medicare PECOS and is a graduate of Other (2012).

NPPES Registry Identity

NPI1134517600
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMARY ELLEN LILES LEMIEUXCredential: J.D., LCSW
Location Address518 HAMILTON AVEPalo Alto, CA 94301-2011
Mailing Address518 Hamilton AvePalo Alto, CA 94301-2011 · (650) 346-7698
Phone(650) 346-7698
Sole ProprietorYes
Medical School CMSOtherGraduated 2012
Enumeration DateJanuary 6, 2015
Last NPPES UpdateOctober 26, 2023
NPPES CertifiedOctober 26, 2023
✔ NPI 1134517600 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Licenses✔ Licensed in CA · 73557✔ Licensed in UT · 11557310-3501✔ Licensed in CO · 09926365
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
518 HAMILTON AVE, Palo Alto, CA 94301
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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

Mary Ellen Liles Lemieux J.d., Lcsw 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 ID840735056
PECOS Enrollment IDI20240711004253
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 94301 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
$0.00 typical visit price
range $70.37 – $206.04
Typical copayment $0.00 (range $17.59 – $51.51)
Most-billed visit code NA
Established Patient
$86.56 typical visit price
range $23.96 – $169.60
Typical copayment $21.64 (range $5.99 – $42.40)
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 3

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

BRIDGET MCDONALD MCCORMICK LMFT
Marriage & Family Therapist
518 HAMILTON AVE
PALO ALTO, CA 94301
Santa Clara County (650) 646-5636
LILYA OSIPOV PH.D.
Psychologist (Clinical)
518 HAMILTON AVE
PALO ALTO, CA 94301
Santa Clara County (408) 550-6303
JAMIE KENT PHD
Psychologist (Clinical)
518 HAMILTON AVE
PALO ALTO, CA 94301
Santa Clara County (650) 307-0847

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 Mary Ellen Lemieux's NPI number?

The NPI number for Mary Ellen Lemieux is 1134517600. It was assigned to this individual provider in the NPPES registry on January 6, 2015.

Where is Mary Ellen Lemieux located?

Mary Ellen Lemieux practices at 518 Hamilton Ave, Palo Alto, CA 94301. The listed phone number is (650) 346-7698.

What is Mary Ellen Lemieux's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Mary Ellen Lemieux enrolled in Medicare?

Yes. Mary Ellen Lemieux 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 Mary Ellen Lemieux was last updated on October 26, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.