Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Derek R. Hatfield, PHD

Individual provider Psychologist · NPI 1427388859

Dr. Derek R. Hatfield, PHD is a Clinical Psychologist in Yakima, Washington. Qualified in 2006, 20 years ago. Practices as a sole proprietor, accepts Medicare assignment and offers telehealth. Licensed in Pennsylvania and Washington.

Years since qualifying
20
Licensed in
PA, WA
In the registry since
2010
Specialties on file
2
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

520 Hennessy Rd
Yakima, WA 98908-9533
Phone: (724) 541-2701
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence PS016690 (PA)
Psychologist Taxonomy 103T00000X · Licence PY61150763 (WA)

Record details

NPI number1427388859
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedJanuary 7, 2010
Last updated in NPPESAugust 31, 2021
Certification dateAugust 31, 2021
Mailing address520 Hennessy Rd, Yakima, WA 98908-9533

Medicare enrollment

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

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 2006 (20 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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