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WILLIAM L MATHERLY LCSW
NPI 1063776011
Social Worker - Clinical in South San Francisco, CA

Active since June 25, 2012PECOS Enrolled
1200 EL CAMINO REAL, SOUTH SAN FRANCISCO, CA 94080(650) 742-2151 Get Directions Write a Review

NPPES record last updated: February 11, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About William L Matherly Lcsw NPPES

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

WILLIAM L MATHERLY LCSW (NPI 1063776011) is an individual clinical provider in South San Francisco, California, licensed in California (LCS28240) and active in the NPI registry since June 2012. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1063776011
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameWILLIAM L MATHERLYCredential: LCSW
Location Address1200 EL CAMINO REALSouth San Francisco, CA 94080
Mailing Address1200 El Camino RealSouth San Francisco, CA 94080 · (650) 742-2151
Phone(650) 742-2151
Sole ProprietorYes
Enumeration DateJune 25, 2012
Last NPPES UpdateFebruary 11, 2022
✔ NPI 1063776011 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in CA · LCS28240
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.
1200 EL CAMINO REAL, South San Francisco, CA 94080
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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 (PECOS)

William L Matherly Lcsw 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 94080 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 $69.00 – $202.35
Typical copayment $0.00 (range $17.25 – $50.58)
Most-billed visit code NA
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 20

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

SANDRA MOONHEE LEE PHARM. D.
Pharmacist
1200 EL CAMINO REAL
SOUTH SAN FRANCISCO, CA 94080
San Mateo County (650) 742-2627
MELISSA ARGENTE RT
Respiratory Therapist, Registered
1200 EL CAMINO REAL
SOUTH SAN FRANCISCO, CA 94080
San Mateo County (650) 742-3313
DR. JAMES NICHOLAS PEROS MD
Internal Medicine
1200 EL CAMINO REAL
SOUTH SAN FRANCISCO, CA 94080
San Mateo County (650) 742-2000
DR. PIERSON CHIOU M.D.
Radiology (Diagnostic Radiology)
1200 EL CAMINO REAL, 1ST FLOOR, DEPARTMENT OF RADIOLOGY
SOUTH SAN FRANCISCO, CA 94080
San Mateo County (650) 742-3882
MS. LARELL LOUISE FINEREN CRNA
Nurse Anesthetist, Certified Registered
1200 EL CAMINO REAL
SOUTH SAN FRANCISCO, CA 94080
San Mateo County (650) 742-3037
EDMOND L. SCHMULBACH MD
Internal Medicine (Hematology & Oncology)
1200 EL CAMINO REAL
SOUTH SAN FRANCISCO, CA 94080
San Mateo County (650) 742-2000
EDWARD J. BADDOUR MD
Emergency Medicine
1200 EL CAMINO REAL
SOUTH SAN FRANCISCO, CA 94080
San Mateo County (650) 742-2000
ESTHER KOESHADI PHARM.D.
Pharmacist
1200 EL CAMINO REAL, KAISER PERMANENTE INPATIENT PHARMACY 3RD FLOOR
SOUTH SAN FRANCISCO, CA 94080
San Mateo County (650) 742-2486

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 William Matherly's NPI number?

The NPI number for William Matherly is 1063776011. It was assigned to this individual provider in the NPPES registry on June 25, 2012.

Where is William Matherly located?

William Matherly practices at 1200 El Camino Real, South San Francisco, CA 94080. The listed phone number is (650) 742-2151.

What is William Matherly's specialty?

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

Is William Matherly enrolled in Medicare?

Yes. William Matherly is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for William Matherly 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.