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

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1285286831

Derek N Walcker, PMHNP is a Nurse Practitioner in Columbia, Maryland. Qualified in 2019, 7 years ago. Accepts Medicare assignment. Licensed in Maryland and Ohio.

Years since qualifying
7
Licensed in
MD, OH
In the registry since
2019
Specialties on file
2
What do these letters mean?
PMHNP — Psychiatric-Mental Health Nurse Practitioner
A nurse practitioner specialising in mental health, able to prescribe psychiatric medication.

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Practice location Address checks out

5850 Waterloo Rd Ste 140
Columbia, MD 21045-1944
Phone: (410) 988-2503
Fax: (410) 343-7899
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence R189093 (MD)
Psychiatric/Mental Health Nurse Practitioner Taxonomy 363LP0808X · Licence APRN.CNP.025119 (OH)

Record details

NPI number1285286831
Entity typeIndividual (Type 1)
GenderMale
Credentials PMHNP
Sole proprietorNo
NPI enumeratedJuly 14, 2019
Last updated in NPPESAugust 16, 2020
Certification dateAugust 16, 2020

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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