DR. TAMARA J LEAF PSYD
NPI 1194707539
Psychologist in Chelsea, MA

Active since November 18, 2005PECOS EnrolledAccepts Medicare Assignment
151 EVERETT AVENUE CHC, CHELSEA HEALTHCARE CENTER, CHELSEA, MA 02150(617) 889-8515(617) 889-8509 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Tamara J Leaf Psyd NPPES

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

DR. TAMARA J LEAF PSYD (NPI 1194707539) is an individual psychologist in Chelsea, Massachusetts, licensed in Massachusetts (4535) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of Other (1983).

NPPES Registry Identity

NPI1194707539
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameDR. TAMARA J LEAFCredential: PSYD
Location Address151 EVERETT AVENUE CHC, CHELSEA HEALTHCARE CENTERChelsea, MA 02150-1807
Mailing AddressPo Box 9142, Mass General Physician OrganizationCharlestown, MA 02129-9142 · (617) 724-0287 · Fax (617) 726-2894
Fax(617) 889-8509
Sole ProprietorNo
Medical School CMSOtherGraduated 1983
Enumeration DateNovember 18, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1194707539 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 · 4535
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.
151 EVERETT AVENUE CHC, Chelsea, MA 02150

Other Identifiers 1

OtherW04724MA · Bcbs Ma

Accepted Insurance

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Tamara J Leaf Psyd is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID244412013
PECOS Enrollment IDI20110315001046
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 Reassignments

2

Medicare enrollment records show Tamara Leaf reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Dermatology
55 FRUIT ST, BUL 2
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,360 clinicians in this Medicare group
General Acute Care Hospital
55 FRUIT ST, BULFINCH 360
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,234 clinicians in this Medicare group

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

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Massachusetts General Hospital

Acute Care Hospitals · Boston, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220071
Location55 Fruit StreetBoston, MA 02114 · Suffolk County
Emergency services Birthing friendly

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 Tamara Leaf's NPI number?

The NPI number for Tamara Leaf is 1194707539. It was assigned to this individual provider in the NPPES registry on November 18, 2005.

Where is Tamara Leaf located?

Tamara Leaf practices at 151 Everett Avenue Chc Chelsea Healthcare Center, Chelsea, MA 02150. The listed phone number is (617) 889-8515.

What is Tamara Leaf's specialty?

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

Is Tamara Leaf enrolled in Medicare?

Yes. Tamara Leaf is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Tamara Leaf's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tamara Leaf reassigns Medicare benefits to 2 organizations: Massachusetts General Physicians Organization Inc (Boston, MA) and The General Hospital Corporation (Boston, MA). Each 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 Tamara Leaf's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Tamara Leaf accept?

Health plans from Harvard Pilgrim Health Care and WellSense Health Plan list Tamara Leaf as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Tamara Leaf affiliated with any hospitals?

According to CMS data, Tamara Leaf is affiliated with Massachusetts General Hospital.

When was this NPI record last updated?

The NPPES record for Tamara Leaf 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 3 months 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.