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Active NPI 1952382541 Individual Practitioner Male Practitioner

Dr. Keith Sullivan Chiappa , PsyD

Psychologist • Lexington, MA

Professional Overview & Biography Verified Profile Summary

Dr. Keith Chiappa, PsyD is a registered healthcare professional specializing in Psychologist in Lexington, MA. Practice services are available at 49 WALTHAM ST STE 2 under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

49 Waltham St Ste 2

Lexington, MA 024215411

Telephone 6173403122
Associated Practice Facility / Clinic
🏢 R T Neuro Llc Facility NPI 1104518976

Specialty Benchmarks & Practice Insights

Comparative analytics for Psychologist in Lexington, MA

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 30.0 Yrs
State Avg: 32.3 Yrs
Regional Practice Density
56 Specialists

Practicing in Lexington, MA (2533 Statewide)

Telehealth Adoption Rate
1.8% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Medical Specialties & State Licenses

CMS Verified: 2026-02-11
Psychologist Primary Specialty

NUCC Taxonomy Code: 103T00000X

State License MA 8454

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.

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

12 Associated Practitioners
Sina Shahrzad

Counselor - Mental Health

NPI 1013759000
Aidan Sullivan

Counselor - Mental Health

NPI 1083479810
Emma Whall

Counselor - Mental Health

NPI 1104665181
Anne Higgins

Counselor - Mental Health

NPI 1154105534
Anthony Aguirre , MSW

Counselor - Mental Health

NPI 1497438337

Master of Social Work

Thomas Andrews

Counselor - Mental Health

NPI 1649054503

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

8 Historical Events
📍
Updated Practice Location February 11, 2026

Registered at 49 WALTHAM ST STE 2, LEXINGTON, MA 024215411 (Tel: 6173403122)

📍
Updated Business Mailing Address February 11, 2026

Registered at 272 SILVER HILL RD, CONCORD, MA 017425338 (Tel: 6175998579)

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍
Updated Practice Location July 08, 2007

Registered at 115 MILL ST, MCLEAN HOSPITAL - EAST HOUSE II, BELMONT, MA 024781041 (Tel: 6178553621)

📍
Updated Business Mailing Address July 08, 2007

Registered at 40 PRINCETON ST, MEDFORD, MA 021555951 (Tel: 6172339832)

👤
Provider Name / Credentials Updated July 08, 2007

Recorded as KEITH CHIAPPA, PSY.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Psychologist (License #8454 in MA)

🟢
Initial NPI Registration & Enumeration November 09, 2005

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1952382541
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: November 09, 2005
Last Update: February 11, 2026
Sole Proprietor: Yes

Mailing Address

272 Silver Hill Rd

Concord, MA 017425338

Phone: 6175998579

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.