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DR. CATHY SIEBOLD DSW, LCSW
NPI 1972727675
Social Worker - Clinical in Cambridge, MA

Active since April 12, 2007Opted out of Medicare · through Jan 22, 2027
246 BRATTLE ST APT 41, CAMBRIDGE, MA 02138(917) 209-3244 Get Directions Write a Review

NPPES record last updated: March 13, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Cathy Siebold Dsw, Lcsw NPPES

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

DR. CATHY SIEBOLD DSW, LCSW (NPI 1972727675) is an individual clinical provider in Cambridge, Massachusetts, licensed in New York (PR019959-1) and active in the NPI registry since April 2007. She has opted out of Medicare through January 22, 2027 and maintains a secondary practice location in New York.

NPPES Registry Identity

NPI1972727675
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameDR. CATHY SIEBOLDCredential: DSW, LCSW
Location Address246 BRATTLE ST APT 41Cambridge, MA 02138-4653
Mailing Address246 Brattle St Apt 41Cambridge, MA 02138-4653 · (917) 209-3244
Phone(917) 209-3244
Sole ProprietorYes
Enumeration DateApril 12, 2007
Last NPPES UpdateMarch 13, 2023
NPPES CertifiedMarch 13, 2023
✔ NPI 1972727675 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 NY · PR019959-1
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.
246 BRATTLE ST APT 41, Cambridge, MA 02138
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Secondary Practice Location 1

Location 1145 E 92nd St # 1DNew York, NY 10128-2431 · Phone (917) 209-3324

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Cathy Siebold Dsw, Lcsw 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 January 22, 2023 through January 22, 2027.

Opt-Out Effective DateJanuary 22, 2023
Opt-Out In Effect ThroughJanuary 22, 2027Opt-out affidavits renew automatically every two years unless cancelled

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 Cathy Siebold's NPI number?

The NPI number for Cathy Siebold is 1972727675. It was assigned to this individual provider in the NPPES registry on April 12, 2007.

Where is Cathy Siebold located?

Cathy Siebold practices at 246 Brattle St Apt 41, Cambridge, MA 02138. The listed phone number is (917) 209-3244.

What is Cathy Siebold's specialty?

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

Is Cathy Siebold enrolled in Medicare?

No. Cathy Siebold has opted out of Medicare through January 22, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Cathy Siebold was last updated on March 13, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.