Performance 21 Physical Therapy LLC
NPI 1578336822 · Physical Therapy Clinic/Center · Arnold, MO
Enrolled with Medicare as Part B Supplier - Physical/Occupational Therapy Group in Private Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Performance 21 Physical Therapy LLC is a Physical Therapy Clinic/Center organization in Arnold, MO (NPI 1578336822).
Provider details
- NPI number
- 1578336822
- Entity type
- Organization
- Primary specialty
- Physical Therapy Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Ryan Knuckles, Ceo/Founder(314) 330-3002
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-10-30
- Last updated
- 2023-11-17
- Certified
- 2023-11-17
Frequently asked questions
- What is Performance 21 Physical Therapy LLC's NPI number?
- Performance 21 Physical Therapy LLC's National Provider Identifier (NPI) is 1578336822, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Performance 21 Physical Therapy LLC?
- Performance 21 Physical Therapy LLC is classified in the NPPES registry as Physical Therapy Clinic/Center (Ambulatory Health Care Facilities).
- Where is Performance 21 Physical Therapy LLC located?
- Performance 21 Physical Therapy LLC's practice location on file with NPPES is 1311 Woodside Dr, Arnold, MO 63010-6500.
- What is Performance 21 Physical Therapy LLC's phone number?
- The practice phone number listed in the NPPES registry for Performance 21 Physical Therapy LLC is (314) 330-3002.
- Does Performance 21 Physical Therapy LLC accept Medicare?
- Performance 21 Physical Therapy LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Performance 21 Physical Therapy LLC?
- The authorized official listed on Performance 21 Physical Therapy LLC's NPPES record is Ryan Knuckles, Ceo/Founder. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Performance 21 Physical Therapy LLC's NPI active?
- Yes — Performance 21 Physical Therapy LLC's NPI (1578336822) is active in the NPPES registry as of the last update on 2023-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.