DR. SARAH L. LUSK PH.D.
NPI 1639109788
Psychologist in Cambridge, MA

Active since July 04, 2006Opted out of Medicare · through Apr 1, 2028
20 WILLARD ST, CAMBRIDGE, MA 02138(617) 999-8078(888) 382-5041 Get Directions Write a Review

NPPES record last updated: May 13, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Sarah L. Lusk Ph.d. NPPES

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

DR. SARAH L. LUSK PH.D. (NPI 1639109788) is an individual psychologist in Cambridge, Massachusetts, licensed in Massachusetts (6404) and active in the NPI registry since July 2006. She has opted out of Medicare through April 1, 2028 and remains eligible to order and refer.

NPPES Registry Identity

NPI1639109788
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameDR. SARAH L. LUSKCredential: PH.D.
Location Address20 WILLARD STCambridge, MA 02138-4861
Mailing Address20 Willard StCambridge, MA 02138-4861 · (339) 368-0500 · Fax (888) 382-5041
Fax(888) 382-5041
Sole ProprietorYes
Enumeration DateJuly 4, 2006
Last NPPES UpdateMay 13, 2025
NPPES CertifiedMay 13, 2025
NPI 1639109788 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License Licensed in MA · 6404
Definition

A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.

20 WILLARD ST, Cambridge, MA 02138

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. Sarah L. Lusk Ph.d. 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, 2018 through April 1, 2028.

Opt-Out Effective DateApril 1, 2018
Opt-Out In Effect ThroughApril 1, 2028Opt-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.

Other Providers at the Same Location NPPES 2

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

Community/Behavioral Health
20 WILLARD ST
CAMBRIDGE, MA 02138
Psychiatry & Neurology (Psychiatry)
20 WILLARD ST
CAMBRIDGE, MA 02138

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 Sarah Lusk's NPI number?

The NPI number for Sarah Lusk is 1639109788. It was assigned to this individual provider in the NPPES registry on July 4, 2006.

Where is Sarah Lusk located?

Sarah Lusk practices at 20 Willard St, Cambridge, MA 02138. The listed phone number is (617) 999-8078.

What is Sarah Lusk's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

Is Sarah Lusk enrolled in Medicare?

No. Sarah Lusk has opted out of Medicare through April 1, 2028. 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 Sarah Lusk was last updated on May 13, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.