MARK J SOKOLOWSKI MD SC
NPI 1396045464
Orthopaedic Surgery - Orthopaedic Surgery of the Spine in Chicago, IL
About Mark J Sokolowski Md Sc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK J SOKOLOWSKI MD SC (NPI 1396045464) is a healthcare organization registered as an orthopaedic surgery of the spine in Chicago, Illinois and active in the NPI registry since October 2010. The organization lists Mark Sokolowski, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mark J Sokolowski Md Sc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Mark J Sokolowski MD Sc, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: 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 Mark J Sokolowski MD Sc's NPI number?
The NPI number for Mark J Sokolowski MD Sc is 1396045464. It was assigned to this organization in the NPPES registry on October 23, 2010.
Where is Mark J Sokolowski MD Sc located?
Mark J Sokolowski MD Sc is located at 1743 N Harlem Ave, Chicago, IL 60707. The listed phone number is (773) 295-5025.
What is Mark J Sokolowski MD Sc's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Orthopaedic Surgery of the Spine, with taxonomy code 207XS0117X.
Is Mark J Sokolowski MD Sc enrolled in Medicare?
Yes. Mark J Sokolowski MD Sc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Mark J Sokolowski MD Sc?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Orthopedic Surgery) reassigns their Medicare billing to Mark J Sokolowski MD Sc. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Mark J Sokolowski MD Sc was last updated on October 6, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Mark J Sokolowski Md Sc · NPI 1396045464
Orthopaedic Surgery of the Spine organization in Chicago, Illinois. Organization record, active in the CMS NPPES registry since October 23, 2010.
## Identity
- **NPI:** 1396045464 (Entity type: Organization)
- **Enumerated:** October 23, 2010
- **Primary specialty:** Orthopaedic Surgery - Orthopaedic Surgery of the Spine · taxonomy 207XS0117X
- **Organization subpart:** No
- **Authorized official:** Mark Sokolowski, PRESIDENT
## Practice location
- **Address:** 1743 N HARLEM AVE, Chicago, IL 60707-4305
- **Phone:** (773) 295-5025
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Orthopedic Surgery) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 6, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1396045464) · Data from the CMS NPPES public registry.