Active NPI
Douglas Johnstone
- Nephrology Physician
- Indianapolis, IN
National Provider Identifier
1659378149
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Nephrology Physician
- License
- 01023906
- Practice address
- 1801 N Senate Blvd
Suite 355
Indianapolis, IN 46202-1228 - Phone
- (317) 924-8420
- Fax
- (317) 924-8424
- NPI assigned
- Jun 30, 2005
- 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 |
|---|---|---|---|---|
| Nephrology Physician | 207RN0300X | 01023906 | IN | Primary |
Addresses
Primary practice location
1801 N Senate Blvd
Suite 355
Indianapolis, IN 46202-1228
Mailing address
1801 N Senate Blvd
Suite 355
Indianapolis, IN 46202-1228
Phone (317) 924-8420
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 000000083035 | Other | IN | ANTHEM NUMBER |
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
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 01023906 | IN | MD | Nephrology Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1120089600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1659378149",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1801 N SENATE BLVD",
"address_2": "SUITE 355",
"city": "INDIANAPOLIS",
"state": "IN",
"postal_code": "462021228",
"telephone_number": "317-924-8420",
"fax_number": "317-924-8424"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1801 N SENATE BLVD",
"address_2": "SUITE 355",
"city": "INDIANAPOLIS",
"state": "IN",
"postal_code": "462021228",
"telephone_number": "317-924-8420",
"fax_number": "317-924-8424"
}
],
"practiceLocations": [],
"basic": {
"last_name": "JOHNSTONE",
"first_name": "DOUGLAS",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-06-30",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "207RN0300X",
"taxonomy_group": "",
"desc": "Internal Medicine, Nephrology",
"state": "IN",
"license": "01023906",
"primary": true
}
],
"identifiers": [
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "ANTHEM NUMBER",
"identifier": "000000083035",
"state": "IN"
}
],
"endpoints": [],
"other_names": []
}Other providers in Indianapolis, 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.