Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1588593909 Individual Practitioner Male Practitioner

Robert Parks Hollander

Psychologist • Hadley, MA

Professional Overview & Biography Verified Profile Summary

Robert Hollander is a registered healthcare professional specializing in Psychologist in Hadley, MA. Practice services are available at 12 BAYBERRY LN under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

12 Bayberry Ln

Hadley, MA 010359562

Telephone 4133450974

Specialty Benchmarks & Practice Insights

Comparative analytics for Psychologist in Hadley, MA

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 10.5 Yrs
State Avg: 32.3 Yrs
Regional Practice Density
1 Specialists

Practicing in Hadley, MA (2533 Statewide)

Telehealth Adoption Rate
0.0% 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: 2026-05-14
Psychologist Primary Specialty

NUCC Taxonomy Code: 103T00000X

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.

Career & Practice History Timeline

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

6 Historical Events
NPI Profile Active May 14, 2026

NPI status registered as active in NPPES database

📍
Updated Practice Location May 14, 2026

Registered at 12 BAYBERRY LN, HADLEY, MA 010359562 (Tel: 4133450974)

📍
Updated Business Mailing Address May 14, 2026

Registered at 12 BAYBERRY LN, HADLEY, MA 010359562 (Tel: 4133450974)

👤
Provider Name / Credentials Updated May 14, 2026

Recorded as ROBERT HOLLANDER

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) May 14, 2026

Psychologist

🟢
Initial NPI Registration & Enumeration May 14, 2026

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1588593909
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: May 14, 2026
Last Update: May 14, 2026
Sole Proprietor: No

Mailing Address

12 Bayberry Ln

Hadley, MA 010359562

Phone: 4133450974

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.