DR. CASEY BENJAMIN WILLIAMS PHARM.D., BCOP
NPI 1639172349
Pharmacist - Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist in Sioux Falls, SD

Q: What is Casey Williams's NPI number?

The NPI number for Casey Williams is 1639172349. It was assigned to this individual provider in the NPPES registry on May 27, 2005.

Q: What is Casey Williams's specialty?

The primary specialty registered for this NPI is Pharmacist, specializing in Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist, with taxonomy code 1835P0018X.

Q: When was this NPI record last updated?

The NPPES record for Casey Williams was last updated on September 2, 2016. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since May 27, 2005

1000 E 23RD ST, SUITE 200, SIOUX FALLS, SD 57105(605) 322-3588(605) 322-6901 Get Directions Write a Review

NPPES record last updated: September 2, 2016. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Dr. Casey Benjamin Williams Pharm.d., Bcop NPPES

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

DR. CASEY BENJAMIN WILLIAMS PHARM.D., BCOP (NPI 1639172349) is an individual pharmacist clinician (phc)/ clinical pharmacy specialist in Sioux Falls, South Dakota, licensed in South Dakota (R5920) and active in the NPI registry since May 2005.

NPPES Registry Identity

NPI1639172349

Entity TypeIndividualMale

Primary Taxonomy1835P0018X

Provider Legal NameDR. CASEY BENJAMIN WILLIAMSCredential: PHARM.D., BCOP

Location Address1000 E 23RD ST, SUITE 200Sioux Falls, SD 57105-2108

Mailing Address1000 E 23rd St, Suite 200Sioux Falls, SD 57105-2108 · (605) 322-3588 · Fax (605) 322-6901

Phone(605) 322-3588

Fax(605) 322-6901

Sole ProprietorNo

Enumeration DateMay 27, 2005

Last NPPES UpdateSeptember 2, 2016

✔ NPI 1639172349 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPharmacist · Pharmacist Clinician (PhC)/ Clinical Pharmacy SpecialistPharmacy Service Providers

Taxonomy Code1835P0018X

Licenses✔ Licensed in SD · R5920✔ Licensed in ND · RPH5472

Definition

Pharmacist Clinician/Clinical Pharmacy Specialist is a pharmacist with additional training and an expanded scope of practice that may include prescriptive authority, therapeutic management, and disease management.

Also ListedPharmacist · PharmacotherapyTaxonomy 1835P1200X · License 1-13848 (KS), 15481 (NC)

Also ListedPharmacist · OncologyTaxonomy 1835X0200X · License 15481 (NC), 1-13848 (KS)

1000 E 23RD ST, Sioux Falls, SD 57105

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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.

JAMES H SIMON MD

Radiology (Radiation Oncology)

1000 E 23RD ST, STE 100
SIOUX FALLS, SD 57105

Minnehaha County (605) 322-1625

DR. TRICIA LAWRENCE MERRIGAN M.D.

Surgery

1000 E 23RD ST, STE 360
SIOUX FALLS, SD 57105

Minnehaha County (605) 322-3950

SALLY A WILLIAMS DO

Family Medicine

1000 E 23RD ST
SIOUX FALLS, SD 57105

Minnehaha County (605) 322-3241

KRISTEN DAWN HURLEY CNP

Nurse Practitioner (Family)

1000 E 23RD ST, STE. 200
SIOUX FALLS, SD 57105

Minnehaha County (605) 322-3035

MRS. ELIZABETH ANN O'NEILL MS ARNP-BC

Nurse Practitioner

1000 E 23RD ST, SUITE #230
SIOUX FALLS, SD 57105

Minnehaha County (605) 322-7334

LAURA HOFER

Physician Assistant

1000 E 23RD ST, 230
SIOUX FALLS, SD 57105

Minnehaha County (605) 322-6900

DR. BRIAN LEYLAND-JONES M.D

Internal Medicine (Medical Oncology)

1000 E 23RD ST, SUITE 200
SIOUX FALLS, SD 57105

Minnehaha County (605) 322-4673

JULIANN MARIE REILAND MD FACS

Surgery

1000 E 23RD ST, STE 300
SIOUX FALLS, SD 57105

Minnehaha County (605) 322-3950

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 Casey Williams's NPI number?

The NPI number for Casey Williams is 1639172349. It was assigned to this individual provider in the NPPES registry on May 27, 2005.

Where is Casey Williams located?

Casey Williams practices at 1000 E 23rd St Suite 200, Sioux Falls, SD 57105. The listed phone number is (605) 322-3588.

What is Casey Williams's specialty?

The primary specialty registered for this NPI is Pharmacist, specializing in Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist, with taxonomy code 1835P0018X.

When was this NPI record last updated?

The NPPES record for Casey Williams was last updated on September 2, 2016. NPI Profile syncs with the weekly NPPES data releases published by CMS.