Active NPI
Jacob Michael Lisak
- Clinical Social Worker
- Marshall, MI
National Provider Identifier
1770417263
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Social Worker
- License
- 6801108553
- Practice address
- 200 N Madison St
Marshall, MI 49068-1199 - Phone
- (269) 789-3862
- Fax
- (269) 789-8126
- NPI assigned
- Jun 10, 2026
- 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 | 34009044A | IN | |
| Clinical Social Worker | 1041C0700X | 6801108553 | MI | Primary |
Addresses
Primary practice location
200 N Madison St
Marshall, MI 49068-1199
Mailing address
319 S Capital Ave
Athens, MI 49011-9335
Phone (269) 789-3862
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1781049600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1781049600000",
"number": "1770417263",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "319 S CAPITAL AVE",
"city": "ATHENS",
"state": "MI",
"postal_code": "490119335",
"telephone_number": "269-789-3862"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "200 N MADISON ST",
"city": "MARSHALL",
"state": "MI",
"postal_code": "490681199",
"telephone_number": "269-789-3862",
"fax_number": "269-789-8126"
}
],
"practiceLocations": [],
"basic": {
"last_name": "LISAK",
"first_name": "JACOB",
"middle_name": "MICHAEL",
"name_prefix": "Mr.",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2026-06-10",
"last_updated": "2026-06-10",
"certification_date": "2026-06-10",
"status": "A"
},
"taxonomies": [
{
"code": "1041C0700X",
"taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
"desc": "Social Worker, Clinical",
"state": "IN",
"license": "34009044A",
"primary": false
},
{
"code": "1041C0700X",
"taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
"desc": "Social Worker, Clinical",
"state": "MI",
"license": "6801108553",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Marshall, MI
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 10, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.