Active NPI
Ludovicus Dekeyser, MD
- Endocrinology, Diabetes & Metabolism Physician
- Michigan City, IN
National Provider Identifier
1972598787
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Endocrinology, Diabetes & Metabolism Physician
- License
- 01043064A
- Practice address
- 1501 Wabash
Suite #400B
Michigan City, IN 46360 - Phone
- (219) 877-1298
- Fax
- (219) 877-1016
- NPI assigned
- Sep 19, 2005
- Last updated
- Jul 13, 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 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Endocrinology, Diabetes & Metabolism Physician | 207RE0101X | 01043064A | IN | Primary |
Addresses
Primary practice location
1501 Wabash
Suite #400B
Michigan City, IN 46360
Mailing address
PO Box 2000
Dyer, IN 46311-0900
Phone (219) 864-2107
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)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 01043064A | IN | MD | Endocrinology, Diabetes & Metabolism Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Healthpartners Medical Group, LLC | Past | Accepting new patients | |
| Community Care Network Inc | Past | Accepting new patients | |
| Lakeshore Anesthesia, P.C. | Past | Accepting new patients | |
| Franciscan Physician Network | Past | Accepting new patients |
Organizations & group practices 4
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.
-
dba Powers Health Medical Group
- Family Medicine Physician
- Saint John, IN
- NPI 1457610487
-
- Clinic/Center
- Lafayette, IN
- NPI 1992543250
-
dba HealthPartners
- Multi-Specialty Clinic/Center
- Michigan City, IN
- NPI 1013014158
-
- Anesthesiology Physician
- Hobart, IN
- NPI 1548210560
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1127088000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1972598787",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 2000",
"city": "DYER",
"state": "IN",
"postal_code": "463110900",
"telephone_number": "219-864-2107",
"fax_number": "219-864-2649"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1501 WABASH",
"address_2": "SUITE #400B",
"city": "MICHIGAN CITY",
"state": "IN",
"postal_code": "46360",
"telephone_number": "219-877-1298",
"fax_number": "219-877-1016"
}
],
"practiceLocations": [],
"basic": {
"last_name": "DEKEYSER",
"first_name": "LUDOVICUS",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-09-19",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "207RE0101X",
"taxonomy_group": "",
"desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
"state": "IN",
"license": "01043064A",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Michigan City, IN
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.