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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.

CASSANDRA DIEHL
NPI 1528955044
Specialist/Technologist - Speech-Language Assistant in Norman, OK

Active since June 18, 2025
2405 PALMER CIR STE 100, NORMAN, OK 73069(405) 561-7928(405) 310-9944 Get Directions Write a Review

NPPES record last updated: July 24, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Jul 24, 2026, Jun 18, 2025 (2 updates tracked since 2025).

About Cassandra Diehl NPPES

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

CASSANDRA DIEHL (NPI 1528955044) is an individual speech-language assistant in Norman, Oklahoma, licensed in Oklahoma (SLPA456) and active in the NPI registry since June 2025. The provider maintains a secondary practice location in Oklahoma City.

NPPES Registry Identity

NPI1528955044
Entity TypeIndividual
Primary Taxonomy2355S0801X
Provider Legal NameCASSANDRA DIEHL
Location Address2405 PALMER CIR STE 100Norman, OK 73069-6351
Mailing Address2405 Palmer Cir Ste 100Norman, OK 73069-6351 · (405) 561-7928 · Fax (405) 310-9944
Phone(405) 561-7928
Fax(405) 310-9944
Sole ProprietorNo
Enumeration DateJune 18, 2025
Last NPPES UpdateJuly 24, 20262 updates tracked since enumeration
NPPES CertifiedJuly 24, 2026
✔ NPI 1528955044 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySpecialist/Technologist · Speech-Language AssistantSpeech, Language and Hearing Service Providers
Taxonomy Code2355S0801X
License✔ Licensed in OK · SLPA456
Also ListedBehavior TechnicianTaxonomy 106S00000X · License RBT-25-445530 (OK)
2405 PALMER CIR STE 100, Norman, OK 73069
Open in Google Maps ↗

Secondary Practice Location 1

Location 12516 NW Expressway StOklahoma City, OK 73112-7163 · Phone (405) 561-7928 · Fax (405) 310-9944

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.

MICHELLE S CORA
Behavior Technician
2405 PALMER CIR STE 100
NORMAN, OK 73069
Cleveland County (855) 782-7822
JARED REY RBT
Behavior Technician
2405 PALMER CIR STE 100
NORMAN, OK 73069
Cleveland County (405) 561-7928
KENNETH ROBINSON
Behavior Technician
2405 PALMER CIR STE 100
NORMAN, OK 73069
Cleveland County (512) 704-2279
ARATH HOYOS
Behavior Technician
2405 PALMER CIR STE 100
NORMAN, OK 73069
Cleveland County (405) 561-7928
AVION ATKINS
Behavior Technician
2405 PALMER CIR STE 100
NORMAN, OK 73069
Cleveland County (405) 561-7928
RAZ AZMAR
Behavior Technician
2405 PALMER CIR STE 100
NORMAN, OK 73069
Cleveland County (972) 603-8143
LAURA ELIZABETH STOUT MS, RD, LD
Dietitian, Registered
2405 PALMER CIR STE 100
NORMAN, OK 73069
Cleveland County (405) 561-7928
ALEXA ALLEN RBT
Behavior Technician
2405 PALMER CIR STE 100
NORMAN, OK 73069
Cleveland County (405) 561-7928

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 Cassandra Diehl's NPI number?

The NPI number for Cassandra Diehl is 1528955044. It was assigned to this individual provider in the NPPES registry on June 18, 2025.

Where is Cassandra Diehl located?

Cassandra Diehl practices at 2405 Palmer Cir Ste 100, Norman, OK 73069. The listed phone number is (405) 561-7928.

What is Cassandra Diehl's specialty?

The primary specialty registered for this NPI is Specialist/Technologist, specializing in Speech-Language Assistant, with taxonomy code 2355S0801X.

When was this NPI record last updated?

The NPPES record for Cassandra Diehl was last updated on July 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 54 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.