Active NPI
Laiken Johnson, RN, BSN
- Pediatric Critical Care Medicine Physician
- Washington, DC
National Provider Identifier
1336087717
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pediatric Critical Care Medicine Physician
- License
- R257842
- Practice address
- 111 Michigan Ave NW
Washington, DC 20010-2916 - Phone
- (202) 476-5433
- NPI assigned
- Mar 24, 2026
- Sex
- Female
- 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 |
|---|---|---|---|---|
| Pediatric Critical Care Medicine Physician | 2080P0203X | R257842 | MD | Primary |
Addresses
Primary practice location
111 Michigan Ave NW
Washington, DC 20010-2916
Mailing address
2200 Colston Dr Apt 201
Silver Spring, MD 20910-2502
Phone (646) 406-1691
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
- Bachelor on Science - Nursing, Registered Nurse
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| R257842 | MD | MD | Pediatric Critical Care Medicine Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1774310400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1774310400000",
"number": "1336087717",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "2200 COLSTON DR APT 201",
"city": "SILVER SPRING",
"state": "MD",
"postal_code": "209102502",
"telephone_number": "646-406-1691"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "111 MICHIGAN AVE NW",
"city": "WASHINGTON",
"state": "DC",
"postal_code": "200102916",
"telephone_number": "202-476-5433"
}
],
"practiceLocations": [],
"basic": {
"last_name": "JOHNSON",
"first_name": "LAIKEN",
"credential": "RN, BSN",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2026-03-24",
"last_updated": "2026-03-24",
"certification_date": "2026-03-24",
"status": "A"
},
"taxonomies": [
{
"code": "2080P0203X",
"taxonomy_group": "",
"desc": "Pediatrics, Pediatric Critical Care Medicine",
"state": "MD",
"license": "R257842",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Washington, DC
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 24, 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.