ATI PHYSICAL THERAPY
NPI 1871825455
Physical Therapist in Chicago, IL
About Ati Physical Therapy NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ATI PHYSICAL THERAPY (NPI 1871825455) is a healthcare organization registered as a physical therapist in Chicago, Illinois and active in the NPI registry since February 2010. The organization lists Lynn Mcgivern, Chief Compliance Officer, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
- Diagnose and manage movement dysfunction and enhance physical and functional abilities.
- Restore, maintain, and promote not only optimal physical function but optimal wellness and fitness and optimal quality of life as it relates to movement and health.
- Prevent the onset, symptoms, and progression of impairments, functional limitations, and disabilities that may result from diseases, disorders, conditions, or injuries.
- Treat conditions of the musculoskeletal, neuromuscular, cardiovascular, pulmonary, and/or integumentary systems.
- Address the negative effects attributable to unique personal and environmental factors as they relate to human performance.
Other Names 1
Other Identifiers 3
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ati Physical Therapy is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by March 31, 2027
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
501Medicare enrollment records show 501 clinicians reassign Medicare billing to Ati Physical Therapy, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 62 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 2
Nearest to this location (20)
See all 501Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Athletic And Therapeutic Institute Of Naperville, LLC's NPI number?
The NPI number for Athletic And Therapeutic Institute Of Naperville, LLC is 1871825455. It was assigned to this organization in the NPPES registry on February 5, 2010. The provider is doing business as Ati Physical Therapy.
Where is Athletic And Therapeutic Institute Of Naperville, LLC located?
Athletic And Therapeutic Institute Of Naperville, LLC is located at 4620 N Clark St, Chicago, IL 60640. The listed phone number is (773) 728-2690.
What is Athletic And Therapeutic Institute Of Naperville, LLC's specialty?
The primary specialty registered for this NPI is Physical Therapist with taxonomy code 225100000X.
Is Athletic And Therapeutic Institute Of Naperville, LLC enrolled in Medicare?
Yes. Athletic And Therapeutic Institute Of Naperville, LLC is registered in the Medicare PECOS enrollment system.
When is Athletic And Therapeutic Institute Of Naperville, LLC's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Illinois, Physical/Occupational Therapy Group in Private Practice) is due for revalidation by March 31, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Athletic And Therapeutic Institute Of Naperville, LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 501 clinicians in 2 Medicare specialties reassign their Medicare billing to Athletic And Therapeutic Institute Of Naperville, LLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Physical Therapist in Private Practice (455) and Occupational Therapist in Private Practice (46). Of these, 1 practice at this address and 62 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Athletic And Therapeutic Institute Of Naperville, LLC was last updated on April 6, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years 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.
# Ati Physical Therapy · NPI 1871825455
Physical Therapist organization in Chicago, Illinois. Organization record, active in the CMS NPPES registry since February 5, 2010.
## Identity
- **NPI:** 1871825455 (Entity type: Organization)
- **Enumerated:** February 5, 2010
- **Primary specialty:** Physical Therapist · taxonomy 225100000X
- **Legal business name:** Athletic And Therapeutic Institute Of Naperville, Llc
- **Organization subpart:** No
- **Authorized official:** Lynn Mcgivern, CHIEF COMPLIANCE OFFICER
## Practice location
- **Address:** 4620 N CLARK ST, Chicago, IL 60640-4620
- **Phone:** (773) 728-2690 · **Fax:** (773) 728-2692
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** March 31, 2027 (Non-DME Part B, Illinois, Physical/Occupational Therapy Group in Private Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 501 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Physical Therapist in Private Practice (455), Occupational Therapist in Private Practice (46); 1 practice at this address and 62 within 10 miles; [full list](https://npiprofile.com/npi/1871825455/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 6, 2011
- **Other identifiers:** Medicare PIN 211585 (IL); Other 610078609 (IL); Medicare PIN 216859 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1871825455) · Data from the CMS NPPES public registry.