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

DR. CLAYTON HOLLANDER PHARM.D
NPI 1982043220
Pharmacist - Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist in Fort Sill, OK

Active since June 20, 2013
4301 WILSON ST, FORT SILL, OK 73503(580) 558-2300 Get Directions Write a Review

NPPES record last updated: September 16, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Sep 16, 2026, Mar 6, 2025 (2 updates tracked since 2025).

About Dr. Clayton Hollander Pharm.d NPPES

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

DR. CLAYTON HOLLANDER PHARM.D (NPI 1982043220) is an individual pharmacist clinician (phc)/ clinical pharmacy specialist in Fort Sill, Oklahoma, licensed in Oklahoma (14004) and active in the NPI registry since June 2013.

NPPES Registry Identity

NPI1982043220
Entity TypeIndividualMale
Primary Taxonomy1835P0018X
Provider Legal NameDR. CLAYTON HOLLANDERCredential: PHARM.D
Location Address4301 WILSON STFort Sill, OK 73503-4472
Mailing Address4301 Wilson StFort Sill, OK 73503-4472 · (580) 558-2300
Phone(580) 558-2300
Sole ProprietorYes
Enumeration DateJune 20, 2013
Last NPPES UpdateSeptember 16, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 16, 2026
✔ NPI 1982043220 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPharmacist · Pharmacist Clinician (PhC)/ Clinical Pharmacy SpecialistPharmacy Service Providers
Taxonomy Code1835P0018X
License✔ Licensed in OK · 14004
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 ListedPharmacistTaxonomy 183500000X · License 14004 (OK)
4301 WILSON ST, Fort Sill, OK 73503
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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.

GENEVIEVE GUDORF DPT
Physical Therapist
4301 WILSON ST
FORT SILL, OK 73503
Comanche County (580) 558-3415
DR. DANIEL JAMES CONVEY DDS
Dentist (Oral and Maxillofacial Surgery)
4301 WILSON ST
FORT SILL, OK 73503
Comanche County (580) 558-8302
DR. RANDALL FREEMAN
Preventive Medicine (Preventive Medicine/Occupational Environmental Medicine)
4301 WILSON ST, REYNOLDS ARMY HEALTH CLINIC COMMAND SUITE - DCCS
FORT SILL, OK 73503
Comanche County (580) 558-3000
MRS. CYNTHIA MARIE OSUNA M.A.
Counselor (Professional)
4301 WILSON ST
FORT SILL, OK 73503
Comanche County (580) 442-4562
DR. EDWARD WAYNE LUMPKINS D.D.S.
Dentist (General Practice)
4301 WILSON ST
FORT SILL, OK 73503
Comanche County (850) 558-8375
DAKOTA DORVIL OT
Occupational Therapist
4301 WILSON ST
FORT SILL, OK 73503
Comanche County (580) 558-2770
MICHAEL TRACEY MD, FAAD
Dermatology
4301 WILSON ST
FORT SILL, OK 73503
Comanche County (833) 286-3732
DR. MICHEAL M MCANALLY PHARMACIST
Pharmacist
4301 WILSON ST
FORT SILL, OK 73503
Comanche County (580) 558-3980

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 Clayton Hollander's NPI number?

The NPI number for Clayton Hollander is 1982043220. It was assigned to this individual provider in the NPPES registry on June 20, 2013.

Where is Clayton Hollander located?

Clayton Hollander practices at 4301 Wilson St, Fort Sill, OK 73503. The listed phone number is (580) 558-2300.

What is Clayton Hollander'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 Clayton Hollander was last updated on September 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.