Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

WILLIAM DERBYSHIRE LCSW-C
NPI 1720082480
Social Worker - Clinical in Frederick, MD

Active since June 10, 2005
170 THOMAS JOHNSON DR, STE 200, FREDERICK, MD 21702(301) 695-8390(301) 694-7906 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About William Derbyshire Lcsw-c NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM DERBYSHIRE LCSW-C (NPI 1720082480) is an individual clinical provider in Frederick, Maryland, licensed in Maryland (04573) and active in the NPI registry since June 2005.

NPPES Registry Identity

NPI1720082480
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameWILLIAM DERBYSHIRECredential: LCSW-C
Location Address170 THOMAS JOHNSON DR, STE 200Frederick, MD 21702-6200
Mailing Address170 Thomas Johnson Dr, Ste 200Frederick, MD 21702-6200 · (301) 695-8390 · Fax (301) 694-7906
Fax(301) 694-7906
Sole ProprietorNo
Enumeration DateJune 10, 2005
Last NPPES UpdateJuly 13, 2026
NPI 1720082480 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License Licensed in MD · 04573
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
170 THOMAS JOHNSON DR, Frederick, MD 21702

Other Identifiers 1

Other343813MD · Mamsi

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Social Worker (Clinical)
170 THOMAS JOHNSON DR, STE 200
FREDERICK, MD 21702
Counselor (Mental Health)
170 THOMAS JOHNSON DR, STE 200
FREDERICK, MD 21702
Psychologist (Family)
170 THOMAS JOHNSON DR, STE 200
FREDERICK, MD 21702
Physical Therapist
170 THOMAS JOHNSON DR
FREDERICK, MD 21702
Social Worker (Clinical)
170 THOMAS JOHNSON DR, STE 210
FREDERICK, MD 21702
Social Worker (Clinical)
170 THOMAS JOHNSON DR, STE 200
FREDERICK, MD 21702
Psychologist
170 THOMAS JOHNSON DR, STE 200
FREDERICK, MD 21702
Social Worker (Clinical)
170 THOMAS JOHNSON DR, STE 200
FREDERICK, MD 21702

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Derbyshire's NPI number?

The NPI number for William Derbyshire is 1720082480. It was assigned to this individual provider in the NPPES registry on June 10, 2005.

Where is William Derbyshire located?

William Derbyshire practices at 170 Thomas Johnson Dr Ste 200, Frederick, MD 21702. The listed phone number is (301) 695-8390.

What is William Derbyshire's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

When was this NPI record last updated?

The NPPES record for William Derbyshire was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 34 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.