MICHAEL JEROME O'NEILL LCSW
NPI 1225431349
Social Worker - Clinical in Greenbrae, CA

Active since October 02, 2014PECOS EnrolledAccepts Medicare Assignment
250 BON AIR RD UNIT B, GREENBRAE, CA 94904(415) 473-6829(415) 473-4113 Get Directions Write a Review

NPPES record last updated: August 4, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Aug 4, 2025, Jun 16, 2021, Apr 26, 2021 (3 updates tracked since 2021).

About Michael Jerome O'neill Lcsw NPPES

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

MICHAEL JEROME O'NEILL LCSW (NPI 1225431349) is an individual clinical provider in Greenbrae, California, licensed in California (LCSW130166) and active in the NPI registry since October 2014. He is enrolled in Medicare PECOS and is a graduate of Other (2019).

NPPES Registry Identity

NPI1225431349
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameMICHAEL JEROME O'NEILLCredential: LCSW
Location Address250 BON AIR RD UNIT BGreenbrae, CA 94904-1702
Mailing Address375 Laguna Honda BlvdSan Francisco, CA 94116-1411 · (628) 217-7341 · Fax (415) 759-3509
Fax(415) 473-4113
Sole ProprietorYes
Medical School CMSOtherGraduated 2019
Enumeration DateOctober 2, 2014
Last NPPES UpdateAugust 4, 20253 updates tracked since enumeration
NPPES CertifiedAugust 4, 2025
NPI 1225431349 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 · LCSW130166 Licensed in CA · 130166
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.
250 BON AIR RD UNIT B, Greenbrae, CA 94904

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-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

Michael Jerome O'neill 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 ID1951812411
PECOS Enrollment IDI20250612003507
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 94904 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 $69.07 – $202.63
Typical copayment $0.00 (range $17.26 – $50.65)
Most-billed visit code NA
Established Patient
$85.00 typical visit price
range $23.44 – $166.64
Typical copayment $21.25 (range $5.86 – $41.66)
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.

Peer Specialist
250 BON AIR RD UNIT B
GREENBRAE, CA 94904
Registered Nurse (Psychiatric/Mental Health)
250 BON AIR RD UNIT B
GREENBRAE, CA 94904
Nurse Practitioner (Psychiatric/Mental Health)
250 BON AIR RD UNIT B
GREENBRAE, CA 94904
Student in an Organized Health Care Education/Training Program
250 BON AIR RD UNIT B
GREENBRAE, CA 94904
Psychologist
250 BON AIR RD UNIT B
GREENBRAE, CA 94904
Peer Specialist
250 BON AIR RD UNIT B
GREENBRAE, CA 94904
Counselor (Mental Health)
250 BON AIR RD UNIT B
GREENBRAE, CA 94904
Registered Nurse (Psychiatric/Mental Health)
250 BON AIR RD UNIT B
GREENBRAE, CA 94904

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 Michael O'neill's NPI number?

The NPI number for Michael O'neill is 1225431349. It was assigned to this individual provider in the NPPES registry on October 2, 2014.

Where is Michael O'neill located?

Michael O'neill practices at 250 Bon Air Rd Unit B, Greenbrae, CA 94904. The listed phone number is (415) 473-6829.

What is Michael O'neill's specialty?

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

Is Michael O'neill enrolled in Medicare?

Yes. Michael O'neill 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 Michael O'neill was last updated on August 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months 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.