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Active NPI 1962470641 Individual Practitioner Male Practitioner

Dr. John L. Gerdes , PhD

Psychologist • Danville, PA

Professional Overview & Biography Verified Profile Summary

Dr. John Gerdes, PhD is a registered healthcare professional specializing in Psychologist in Danville, PA. Practice services are available at 100 N ACADEMY AVE under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

100 N Academy Ave

Danville, PA 178229800

Telephone 5702716516
Associated Practice Facility / Clinic

Specialty Benchmarks & Practice Insights

Comparative analytics for Psychologist in Danville, PA

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 10.4 Yrs
State Avg: 26.7 Yrs
Regional Practice Density
38 Specialists

Practicing in Danville, PA (2901 Statewide)

Telehealth Adoption Rate
23.7% 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

Psychologist Primary Specialty

NUCC Taxonomy Code: 103T00000X

State License PA PS002568L

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

40 Associated Practitioners
Dr. Kristen Yost , DO

Psychiatry & Neurology - Psychiatry

NPI 1013275312

Doctor of Osteopathic Medicine (D.O.)

NPI 1013298157

Doctor of Philosophy (Ph.D.)

Dr. Joanne Byars , MD

Psychiatry & Neurology - Psychiatry

NPI 1023226909

Doctor of Medicine (M.D.)

Dr. Kirstie Herb Neff , PhD

Psychologist - Health

NPI 1023894854

Doctor of Philosophy (Ph.D.)

NPI 1053145680

Doctor of Psychology (Psy.D.)

Dr. Kelly Clark , MD

Psychiatry & Neurology - Psychiatry

NPI 1063450377

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

6 Historical Events
NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍
Updated Practice Location July 08, 2007

Registered at 100 N ACADEMY AVE, DANVILLE, PA 178229800 (Tel: 5702716516)

📍
Updated Business Mailing Address July 08, 2007

Registered at 100 N ACADEMY AVE, DANVILLE, PA 178229800 (Tel: 5702716144)

👤
Provider Name / Credentials Updated July 08, 2007

Recorded as JOHN GERDES, PH.D.

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

Psychologist (License #PS002568L in PA)

🟢
Initial NPI Registration & Enumeration March 09, 2006

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: 1962470641
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: March 09, 2006
Last Update: July 13, 2026
Sole Proprietor: No

Mailing Address

100 N Academy Ave

Danville, PA 178229800

Phone: 5702716144

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.