MRS. JUDITH K. GRINBERG MSW
NPI 1649372301
Social Worker - Clinical in Los Altos, CA

Active since September 02, 2006Opted out of Medicare · through Apr 1, 2027
900 N SAN ANTONIO RD, SUITE 206, LOS ALTOS, CA 94022(650) 323-2227 Get Directions Write a Review

NPPES record last updated: January 18, 2011. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mrs. Judith K. Grinberg Msw NPPES

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

MRS. JUDITH K. GRINBERG MSW (NPI 1649372301) is an individual clinical provider in Los Altos, California, licensed in California (10119) and active in the NPI registry since September 2006. She has opted out of Medicare through April 1, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1649372301
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMRS. JUDITH K. GRINBERGCredential: MSW
Location Address900 N SAN ANTONIO RD, SUITE 206Los Altos, CA 94022-1373
Mailing Address1254 Middlefield RdPalo Alto, CA 94301-3346 · (650) 321-2272
Sole ProprietorYes
Enumeration DateSeptember 2, 2006
Last NPPES UpdateJanuary 18, 2011
NPI 1649372301 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 · 10119
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.
900 N SAN ANTONIO RD, Los Altos, CA 94022

Other Names 1

Former Name (1)Mrs. Judith K. Silverman Msw

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Opted out of Medicare

Mrs. Judith K. Grinberg Msw 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 April 1, 2019 through April 1, 2027.

Opt-Out Effective DateApril 1, 2019
Opt-Out In Effect ThroughApril 1, 2027Opt-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 94022 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 10

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

Psychologist
900 N SAN ANTONIO RD, STE 209
LOS ALTOS, CA 94022
Social Worker (Clinical)
900 N SAN ANTONIO RD
LOS ALTOS, CA 94022
Psychiatry & Neurology (Psychosomatic Medicine)
900 N SAN ANTONIO RD, #216
LOS ALTOS, CA 94022
Counselor
900 N SAN ANTONIO RD, SUITE #217
LOS ALTOS, CA 94022
Chiropractor
900 N SAN ANTONIO RD, STE 103
LOS ALTOS, CA 94022
Marriage & Family Therapist
900 N SAN ANTONIO RD, SUITE 210
LOS ALTOS, CA 94022
Marriage & Family Therapist
900 N SAN ANTONIO RD, SUITE 206
LOS ALTOS, CA 94022
Counselor (Mental Health)
900 N SAN ANTONIO RD, SUITE 207
LOS ALTOS, CA 94022

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 Judith Grinberg's NPI number?

The NPI number for Judith Grinberg is 1649372301. It was assigned to this individual provider in the NPPES registry on September 2, 2006. The provider is also known as Mrs. Judith K. Silverman Msw.

Where is Judith Grinberg located?

Judith Grinberg practices at 900 N San Antonio Rd Suite 206, Los Altos, CA 94022. The listed phone number is (650) 323-2227.

What is Judith Grinberg's specialty?

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

Is Judith Grinberg enrolled in Medicare?

No. Judith Grinberg has opted out of Medicare through April 1, 2027. 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 Judith Grinberg was last updated on January 18, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.