Gerald David Oster, PH.D.

Psychologist

Gerald David Oster is a Psychologist based in Olney, MD with over 45 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.

Telehealth Available
NPI Active per CMS — Q2 2026|Medicare Enrolled|Order & Refer

With over 45 years in psychology, Gerald David Oster, PH.D. is a long-established psychologist in Olney. With 45+ years of experience, he has been practicing in the Olney area. A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description.

1 of 78 Psychologist providers in MDSee all Psychologist in Olney45+ years experienceNPI since 2007

Older · 2034dNPPES updated 2020-10-27 · verify NPI on CMS · Verify license at Maryland Board of Physicians

Contact & Location

Practice Location

2915 Olney Sandy Spring Rd Ste B, Olney, MD 20832-3502

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Background & Specialty

Education, training, and specialty classification from CMS NPPES and Medicare records.

Career Journey
  1. Board certified · Oct 24, 2020

    Self-reported via NPPES

  2. 45 years in practice

    Senior practitioner

PsychologistBehavioral Health & Social Service Providers

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.

Taxonomy: 103T00000X

Practice Footprint

Mailing address

Po Box 316, Olney, MD 20830-0316

Differs from practice location

Virtual Psychology Care With Gerald David Oster

NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.

Schedule a virtual visit with Gerald David Oster for follow-ups, medication reviews, and ongoing care — no travel to Olney required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.

Frequently Asked Questions

Common questions about Gerald David Oster

NPI records show Dr. Oster as active with telehealth listed in Olney, MD. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (301) 774-6202.

Verified across 2 federal data sources

Sourced from CMS NPPES · OIG LEIE. See Data Methodology.

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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.

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