Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ANNASTASIA SAMOILOV CHASE PH.D.
NPI 1548223167
Psychologist - Clinical Child & Adolescent in Arlington, MA

Q: What is Annastasia Chase's NPI number?

The NPI number for Annastasia Chase is 1548223167. It was assigned to this individual provider in the NPPES registry on April 7, 2006.

Q: What is Annastasia Chase's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical Child & Adolescent, with taxonomy code 103TC2200X.

Q: Is Annastasia Chase enrolled in Medicare?

No. Annastasia Chase has opted out of Medicare through September 29, 2026. 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.

Q: When was this NPI record last updated?

The NPPES record for Annastasia Chase was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 days 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.

Active since April 07, 2006Opted out of Medicare · through Sep 29, 2026

7 COURT ST, ARLINGTON, MA 02476(781) 483-3366 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

On this page

About Annastasia Samoilov Chase Ph.d. NPPES

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

ANNASTASIA SAMOILOV CHASE PH.D. (NPI 1548223167) is an individual clinical child & adolescent provider in Arlington, Massachusetts, licensed in Massachusetts (7778) and active in the NPI registry since April 2006. She has opted out of Medicare through September 29, 2026 and remains eligible to order and refer.

NPPES Registry Identity

NPI1548223167

Entity TypeIndividualFemale

Primary Taxonomy103TC2200X

Provider Legal NameANNASTASIA SAMOILOV CHASECredential: PH.D.

Location Address7 COURT STArlington, MA 02476-4803

Mailing Address7 Court StArlington, MA 02476-4803 · (781) 483-3366

Phone(781) 483-3366

Sole ProprietorNo

Enumeration DateApril 7, 2006

Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration

✔ NPI 1548223167 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychologist · Clinical Child & AdolescentBehavioral Health & Social Service Providers

Taxonomy Code103TC2200X

License✔ Licensed in MA · 7778

Definition

A psychologist who develops and applies scientific knowledge to the delivery of psychological services to infants, toddlers, children and adolescents within their social context. Of particular importance to the specialty of clinical child psychology is an understanding of the basic psychological needs of children and adolescents, and how the family and other social contexts influence the socio-emotional adjustment, cognitive development, behavioral adaptation and health status of children and adolescents.

Also ListedPsychologist · ClinicalTaxonomy 103TC0700X · License 7778 (MA)

7 COURT ST, Arlington, MA 02476

Open in Google Maps ↗

Other Identifiers 3

Other409331MA · Tufts

OtherQ04410Blue Cross

Other016058MA · Pbhi

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Annastasia Samoilov Chase 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 September 29, 2016 through September 29, 2026.

Opt-Out Effective DateSeptember 29, 2016

Opt-Out In Effect ThroughSeptember 29, 2026Opt-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 6

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

CONTINUOUS WHOLE PSYCHOTHERAPY

Social Worker (Clinical)