Active NPI
Matthew D. Halvorson, MA, L.P.C.
- Mental Health Counselor
- Carmel, IN
National Provider Identifier
1134629470
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Mental Health Counselor
- License
- 39005606A
- Practice address
- 275 Medical Dr Unit 96
Carmel, IN 46082-0049 - Phone
- (317) 643-7835
- Fax
- (317) 643-7840
- NPI assigned
- Feb 13, 2018
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Mental Health Counselor | 101YM0800X | 39005606A | IN | Primary |
| Counselor | 101Y00000X | 74971 | TX | |
| Counselor | 101Y00000X | 180.016078 | IL |
Addresses
Primary practice location
275 Medical Dr Unit 96
Carmel, IN 46082-0049
Mailing address
275 Medical Dr Unit 96
Carmel, IN 46082-0049
Phone (317) 643-7835
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Eligible to order & refer
- Part B services: No
- Medical equipment: Yes
- Home health: No
- Power mobility devices: No
- Hospice: No
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Master of Arts
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 180.016078 | IL | MD | Counselor |
| 74971 | TX | MD | Counselor |
| 39005606A | IN | MD | Mental Health Counselor |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Deep Centered Psychiatry PLLC | Past | Accepting new patients |
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.
-
- Psychiatry Physician
- Austin, TX
- NPI 1629853825
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1518480000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1768262400000",
"number": "1134629470",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "275 MEDICAL DR UNIT 96",
"city": "CARMEL",
"state": "IN",
"postal_code": "460820049",
"telephone_number": "317-643-7835",
"fax_number": "317-643-7840"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "275 MEDICAL DR UNIT 96",
"city": "CARMEL",
"state": "IN",
"postal_code": "460820049",
"telephone_number": "317-643-7835",
"fax_number": "317-643-7840"
}
],
"practiceLocations": [],
"basic": {
"last_name": "HALVORSON",
"first_name": "MATTHEW",
"middle_name": "D.",
"credential": "MA, L.P.C.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2018-02-13",
"last_updated": "2026-01-13",
"certification_date": "2026-01-13",
"status": "A"
},
"taxonomies": [
{
"code": "101YM0800X",
"taxonomy_group": "",
"desc": "Counselor, Mental Health",
"state": "IN",
"license": "39005606A",
"primary": true
},
{
"code": "101Y00000X",
"taxonomy_group": "",
"desc": "Counselor",
"state": "TX",
"license": "74971",
"primary": false
},
{
"code": "101Y00000X",
"taxonomy_group": "",
"desc": "Counselor",
"state": "IL",
"license": "180.016078",
"primary": false
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Carmel, IN
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 13, 2026; 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.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.