Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Diane McCarthy Prost, PSYD, MED, NCC, LPC

Individual provider Professional Counselor · NPI 1568907749

Dr. Diane McCarthy Prost, PSYD, MED, NCC, LPC is a Mental Health Counselor in Fairfax, Virginia. Qualified in 2011, 15 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Missouri and Virginia.

Years since qualifying
15
Licensed in
MO, VA
In the registry since
2016
Specialties on file
2
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.
MED — Master of Education
A graduate education degree, written M.Ed.
NCC — National Certified Counselor
A counsellor certified by the NBCC.
LPC — Licensed Professional Counselor
A licensed mental health counsellor.

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Practice location Address checks out

9675 Main St Ste C
Fairfax, VA 22031-3762
Phone: (314) 640-1530
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Professional Counselor (primary) Taxonomy 101YP2500X · Licence 0701013187 (VA)
Professional Counselor Taxonomy 101YP2500X · Licence 2011037455 (MO)

Record details

NPI number1568907749
Entity typeIndividual (Type 1)
GenderFemale
Credentials PSYD , MED , NCC , LPC
Sole proprietorYes
NPI enumeratedDecember 27, 2016
Last updated in NPPESSeptember 2, 2026
Certification dateSeptember 2, 2026

Medicare enrollment

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

Medicare specialtyMENTAL HEALTH COUNSELOR
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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