MARK A TOMCZAK CRNA
NPI 1235188533
Nurse Anesthetist, Certified Registered in Lansing, IL
About Mark A Tomczak Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK A TOMCZAK CRNA (NPI 1235188533) is an individual nurse anesthetist, certified registered in Lansing, Illinois, licensed in Indiana (28118620A) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1998).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mark A Tomczak Crna is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Mark Tomczak reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mokena, IL 60448
- Reassigned Medicare billing, Illinois and Indiana enrollments
- 63 clinicians in this Medicare group
Elkhart, IN 46514
- Reassigned Medicare billing, Indiana enrollment
- Medicare enrollment name: Great Lakes Anesthesia PC
- 60 clinicians in this Medicare group
Pensacola, FL 32502
- Reassigned Medicare billing, Indiana enrollment
- 57 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60438 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LANSING, IL 60438
LANSING, IL 60438
LANSING, IL 60438
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 Tomczak's NPI number?
The NPI number for Mark Tomczak is 1235188533. It was assigned to this individual provider in the NPPES registry on May 6, 2006.
Where is Mark Tomczak located?
Mark Tomczak practices at 18221 Torrence Ave Suite 1B, Lansing, IL 60438. The listed phone number is (708) 895-9450.
What is Mark Tomczak's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Mark Tomczak enrolled in Medicare?
Yes. Mark Tomczak is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Mark Tomczak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Tomczak reassigns Medicare benefits to 3 organizations: Elite Anesthesia Providers, Ltd (Mokena, IL), Great Lakes Anesthesia, P.C. (Elkhart, IN) and Ams Northern Indiana LLC (Pensacola, FL). Each 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 Mark Tomczak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Mark Tomczak was last updated on April 20, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.