Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Rehabilitation Associates of Muskogee

Physical Medicine & Rehabilitation Physician in Muskogee, OK · enumerated 2007 · authorized official Andrew Olshen, President.

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

National Provider Identifier

1639391154

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Registry record

Entity type Organization (Type 2)

Legal business name Rehabilitation Associates of Muskogee

Practice address 333 S 36th St, Muskogee, OK, 74401

Phone (918) 682-2815

Fax (918) 682-8643

Enumeration date May 3, 2007

Last updated in NPPES Nov 11, 2008

Taxonomy & classification

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License 23633 (OK) Primary

Authorized official

Name Andrew Olshen

Title President

Phone (918) 682-2815

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 Rehabilitation Associates of Muskogee?

Rehabilitation Associates of Muskogee is registered in NPPES as a Physical Medicine & Rehabilitation Physician (its primary provider taxonomy).

Providers at this address

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Andrew Olshen Physical Medicine & Rehabilitation Physician · Muskogee, OK NPI 1386663532

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-11-11.