NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

B. Todd Graybill, Ph.D., P.L.L.C.

Clinical Psychologist in Muskogee, OK · enumerated 2006 · authorized official B. Graybill, Member.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1942211958

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name B. Todd Graybill, Ph.D., P.L.L.C.
Practice address 333 S 38th St, Suite K, Muskogee, OK, 74401
Fax (918) 686-0902
Enumeration date Aug 11, 2006
Last updated in NPPES Aug 22, 2020

Taxonomy & classification

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 353 (OK) Primary

Authorized official

Name B. Graybill
Title Member

Other identifiers

Identifier Type State Issuer
443-48-2619-002 Other OK BLUE CROSS BLUE SHIELD

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is B. Todd Graybill, Ph.D., P.L.L.C.?
B. Todd Graybill, Ph.D., P.L.L.C. is registered in NPPES as a Clinical Psychologist (its primary provider taxonomy).

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.