Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Gerald David Oster, PHD

Individual provider Psychologist · NPI 1528181906

Dr. Gerald David Oster, PHD is a Clinical Psychologist in Olney, Maryland. Qualified in 1981, 45 years ago. Practices as a sole proprietor, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in Maryland.

Years since qualifying
45
Licensed in
MD
In the registry since
2007
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

2915 Olney Sandy Spring Rd Ste B
Olney, MD 20832-3502
Phone: (301) 774-6202
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 18404 Queen Elizabeth Dr, Olney, MD 20832-1722 — (301) 774-6202
  • 3416 Olandwood Ct Ste 201, Olney, MD 20832-1373 — (301) 774-6202

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 01755 (MD)

Record details

NPI number1528181906
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedApril 9, 2007
Last updated in NPPESOctober 27, 2020
Certification dateOctober 25, 2020
Mailing addressPo Box 316, Olney, MD 20830-0316

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1981 (45 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

Other providers in Olney