Active NPI
James William Plantenga, LMSW
- Clinical Social Worker
- Grand Rapids, MI
National Provider Identifier
1205529104
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Social Worker
- License
- 6801121350
- Practice address
- 100 Michigan St NE
Grand Rapids, MI 49503-2560 - Phone
- (616) 267-3000
- NPI assigned
- May 29, 2023
- Last updated
- Jul 9, 2026
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Social Worker | 104100000X | 6801121350 | MI | |
| Clinical Social Worker | 1041C0700X | 6801121350 | MI | Primary |
Addresses
Primary practice location
100 Michigan St NE
Grand Rapids, MI 49503-2560
Mailing address
1640 Nelson Ave SE
Grand Rapids, MI 49507-2151
Phone (616) 915-1697
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": "1685318400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783555200000",
"number": "1205529104",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1640 NELSON AVE SE",
"city": "GRAND RAPIDS",
"state": "MI",
"postal_code": "495072151",
"telephone_number": "616-915-1697"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "100 MICHIGAN ST NE",
"city": "GRAND RAPIDS",
"state": "MI",
"postal_code": "495032560",
"telephone_number": "616-267-3000"
}
],
"practiceLocations": [],
"basic": {
"last_name": "PLANTENGA",
"first_name": "JAMES",
"middle_name": "WILLIAM",
"credential": "LMSW",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2023-05-29",
"last_updated": "2026-07-09",
"certification_date": "2026-07-09",
"status": "A"
},
"taxonomies": [
{
"code": "104100000X",
"taxonomy_group": "",
"desc": "Social Worker",
"state": "MI",
"license": "6801121350",
"primary": false
},
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": "MI",
"license": "6801121350",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Grand Rapids, MI
- Charlie Marie Planck, BCBA LBA
- Planned Parenthood of West & Northern Michigan
- Planned Parenthood of West and Northern Mi
- Planned Parenthood of West and Northern Michigan
- Planned Parenthood of West and Northern Michigan, Inc.
- Eric Gregory Plantinga
- Dale Marshall Plapp, MD
- Andrew Plaska, MD
- Madison Plaska, FNP-BC
- Alison Kay Plasman, OT
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 9, 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.