Active NPI
Brian O. Mason, LCSW, LMSW
- Clinical Social Worker
- Onsted, MI
National Provider Identifier
1295920296
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Social Worker
- License
- 149007751
- Practice address
- 214 Pentecost Hwy
Onsted, MI 49265-9638 - Phone
- (815) 245-6834
- NPI assigned
- Sep 12, 2007
- Sex
- Male
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Clinical Social Worker | 1041C0700X | 6801119163 | MI | |
| Clinical Social Worker | 1041C0700X | 149007751 | IL | Primary |
Addresses
Primary practice location
214 Pentecost Hwy
Onsted, MI 49265-9638
Mailing address
214 Pentecost Hwy
Onsted, MI 49265-9638
Phone (815) 245-6834
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 149007751 | Other | IL | LICENSED CLINICAL SOCIAL WORKER |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in IL
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: No
- Power mobility devices: No
- Hospice: No
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Clinical Social Worker
- Education
- Other, 1994
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
1051 Perimeter Dr
Suite 700
Schaumburg, IL 60173-5855
Phone (800) 693-1916
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 149007751 | IL | MD | Clinical Social Worker |
| 6801119163 | MI | MD | Clinical Social Worker |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Richard Kneip, PH.D., P.C. | Current | Accepting new patients |
Locations
1560 Wall St
Ste 204
Naperville, IL 60563
Phone (630) 491-9749
1051 Perimeter Dr
Ste 700
Schaumburg, IL 60173
Phone (269) 350-4593
Organizations & group practices 1
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1189555200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1749513600000",
"number": "1295920296",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "214 PENTECOST HWY",
"city": "ONSTED",
"state": "MI",
"postal_code": "492659638",
"telephone_number": "815-245-6834"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "214 PENTECOST HWY",
"city": "ONSTED",
"state": "MI",
"postal_code": "492659638",
"telephone_number": "815-245-6834"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MASON",
"first_name": "BRIAN",
"middle_name": "O.",
"name_prefix": "Mr.",
"credential": "LCSW, LMSW",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2007-09-12",
"last_updated": "2025-06-10",
"certification_date": "2025-06-10",
"status": "A"
},
"taxonomies": [
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": "MI",
"license": "6801119163",
"primary": false
},
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": "IL",
"license": "149007751",
"primary": true
}
],
"identifiers": [
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "LICENSED CLINICAL SOCIAL WORKER",
"identifier": "149007751",
"state": "IL"
}
],
"endpoints": [],
"other_names": []
}
Other providers in Onsted, MI
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 10, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.