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

Derek J Parker, MA, MS, PHD

Individual provider Professional Counselor · NPI 1679919633

Derek J Parker, MA, MS, PHD is a Mental Health Counselor in Du Bois, Pennsylvania. Qualified in 2014, 12 years ago. Practices with Richard Hoffman, a 54-clinician group, works from 7 locations and accepts Medicare assignment.

Years since qualifying
12
In the registry since
2013
Specialties on file
2
What do these letters mean?
MA — Master of Arts
A graduate arts degree.
MS — Master of Science
A graduate science degree.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

420 1st St
Du Bois, PA 15801-3012
Phone: (814) 221-5744
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (6)

  • 205 Jefferson St, Brookville, PA 15825-1144 — (724) 396-1510
  • 56 Graham Ave, Brookville, PA 15825-1403 — (814) 221-5744
  • 100 W Long Ave, Du Bois, PA 15801-2104 — (814) 221-5744
  • 2785 Walston Rd, Punxsutawney, PA 15767-2625 — (724) 396-1510
  • 140 N Saint Marys St, Saint Marys, PA 15857-1236 — (724) 396-1510
  • 169 West College Street, Waynesburg, PA 15370-1319 — (724) 396-1510

Specialties & licences

Professional Counselor (primary) Taxonomy 101YP2500X
Mental Health Counselor Taxonomy 101YM0800X

Record details

NPI number1679919633
Entity typeIndividual (Type 1)
GenderMale
Credentials MA , MS , PHD
Sole proprietorYes
NPI enumeratedMay 17, 2013
Last updated in NPPESApril 22, 2026
Certification dateApril 22, 2026
Mailing address56 Graham Ave, Brookville, PA 15825-1403

Medicare enrollment

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

Medicare specialtyMENTAL HEALTH COUNSELOR
Medical schoolOTHER
Graduated 2014 (12 years in practice)
Group practice Richard Hoffman — 54 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Du Bois