MR. MARK L. BROWN LCSW
NPI 1366650475
Social Worker - Clinical in Northfield, IL
About Mr. Mark L. Brown Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. MARK L. BROWN LCSW (NPI 1366650475) is an individual clinical provider in Northfield, Illinois and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS and is a graduate of Other (1991).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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
Mr. Mark L. Brown Lcsw 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 Reassignment
Medicare enrollment records show Mark Brown reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Deer Park, IL 60010
- Reassigned Medicare billing, Illinois enrollment
- 4 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60093 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 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NORTHFIELD, IL 60093
NORTHFIELD, IL 60093
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 Brown's NPI number?
The NPI number for Mark Brown is 1366650475. It was assigned to this individual provider in the NPPES registry on May 21, 2007.
Where is Mark Brown located?
Mark Brown practices at 466 Central Ave Suite 44, Northfield, IL 60093. The listed phone number is (847) 414-5425.
What is Mark Brown's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Mark Brown enrolled in Medicare?
Yes. Mark Brown 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 organization bills Medicare for Mark Brown's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Brown reassigns Medicare benefits to B & B Spaulding LLC (Deer Park, IL). The 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 Brown's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Brown accept?
Health plans from UnitedHealthcare list Mark Brown as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Mark Brown was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Mr. Mark L. Brown, LCSW · NPI 1366650475
Clinical provider in Northfield, Illinois. Individual provider, active in the CMS NPPES registry since May 21, 2007.
## Identity
- **NPI:** 1366650475 (Entity type: Individual)
- **Enumerated:** May 21, 2007
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **Sole proprietor:** Yes
## Practice location
- **Address:** 466 CENTRAL AVE, SUITE 44, Northfield, IL 60093-3041
- **Phone:** (847) 414-5425 · **Fax:** (847) 433-1822
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** B & B Spaulding LLC (NPI 1902106750, Deer Park, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1991
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1366650475) · Data from the CMS NPPES public registry.