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THOMAS A TASHJIAN PHD
NPI 1912959602
Psychologist - Clinical in Newton, MA

Active since May 17, 2006PECOS Enrolled
246 WALNUT ST, NEWTON, MA 02460(617) 244-3322(617) 244-1827 Get Directions Write a Review

NPPES record last updated: October 12, 2010. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Thomas A Tashjian Phd NPPES

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

THOMAS A TASHJIAN PHD (NPI 1912959602) is an individual clinical provider in Newton, Massachusetts, licensed in Massachusetts (3022) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1912959602
Entity TypeIndividualMale
Primary Taxonomy103TC0700X
Provider Legal NameTHOMAS A TASHJIANCredential: PHD
Location Address246 WALNUT STNewton, MA 02460-1689
Mailing Address1148 Old Turnpike RdOakham, MA 01068-9824 · (508) 860-1049
Phone(617) 244-3322
Fax(617) 244-1827
Sole ProprietorYes
Enumeration DateMay 17, 2006
Last NPPES UpdateOctober 12, 2010
✔ NPI 1912959602 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in MA · 3022
Definition
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.
246 WALNUT ST, Newton, MA 02460
Open in Google Maps ↗

Other Identifiers 3

OtherW03456MA · Blue Cross Blue Shield Of
Medicare ID-Type UnspecifiedW03456MA · Medicare Number
Medicaid0525154MA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Thomas A Tashjian Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Thomas Tashjian reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Healthdrive Behavioral Health Services, PLLC
93 mi
Geriatric Psychiatry
101 CENTERPOINT DR STE 215
Middletown, CT 06457
  • Reassigned Medicare billing, Massachusetts enrollment
  • 108 clinicians in this Medicare group
NPI 1760909279 (888) 964-6681

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Psychotherapy, 30 minutes 90832
Psychotherapy is a therapeutic interaction or treatment between a trained professional and a patient. In a 30-minute session, the therapist helps you explore feelings, thoughts, and behaviors to better understand yourself and manage life's challenges.
557 services80 patients
Psychiatric diagnostic evaluation 90791
A psychiatric diagnostic evaluation is a thorough assessment used to identify any mental health conditions you may have. It involves a detailed discussion about your symptoms, thoughts, feelings and behavior patterns. Your medical history and family's mental health history are also considered.
188 services187 patients
Psychotherapy, 45 minutes 90834
Psychotherapy is a treatment method where you converse with a therapist about your thoughts, feelings, and behaviors. In a 45-minute session, the therapist assists you in understanding and managing your mental health concerns, improving emotional wellness, and promoting personal growth.
88 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02460 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
$189.86 typical visit price
range $63.72 – $189.86
Typical copayment $47.46 (range $15.93 – $47.46)
Most-billed visit code 99205
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
Most-billed visit code 99214
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 11

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

MARYANN CLAIRE SAUNDERS ARNP
Nurse Practitioner
246 WALNUT ST
NEWTON, MA 02460
Middlesex County (617) 244-3322
MS. ELISABETH BLACKWOOD FNP
Nurse Practitioner (Family)
246 WALNUT ST, SUITE 104
NEWTON, MA 02460
Middlesex County (617) 244-3322
MRS. MARIAN J DESROCHERS APRN
Nurse Practitioner (Family)
246 WALNUT ST
NEWTON, MA 02460
Middlesex County (617) 244-3322
REESE CAILLET GIDDENS MS
Counselor
246 WALNUT ST
NEWTONVILLE, MA 02460
Middlesex County (781) 307-0098
SUZANNE KEEFE FNP-CS
Nurse Practitioner
246 WALNUT ST
NEWTON, MA 02460
Middlesex County (617) 244-3322
MARC A BARD M.D.
Internal Medicine
246 WALNUT ST
NEWTON, MA 02460
Middlesex County (617) 630-1731
SHARON HAGGERTY NP
Nurse Practitioner
246 WALNUT ST
NEWTON, MA 02460
Middlesex County (617) 244-3322
JAMES S ROBISON M.D.
Psychiatry & Neurology (Psychiatry)
246 WALNUT ST, SUITE 104
NEWTON, MA 02460
Middlesex County (617) 244-3322

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 Thomas Tashjian's NPI number?

The NPI number for Thomas Tashjian is 1912959602. It was assigned to this individual provider in the NPPES registry on May 17, 2006.

Where is Thomas Tashjian located?

Thomas Tashjian practices at 246 Walnut St, Newton, MA 02460. The listed phone number is (617) 244-3322.

What is Thomas Tashjian's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Thomas Tashjian enrolled in Medicare?

Yes. Thomas Tashjian is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Thomas Tashjian's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Tashjian reassigns Medicare benefits to Healthdrive Behavioral Health Services, PLLC (Middletown, CT). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Thomas Tashjian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Thomas Tashjian was last updated on October 12, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.