Active NPI
Rachel Gahagen, D.O.
- Pediatric Critical Care Medicine Physician
- Chicago, IL
National Provider Identifier
1023549599
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pediatric Critical Care Medicine Physician
- License
- 036.165303
- Practice address
- 225 E Chicago Ave
Chicago, IL 60611-2991 - Phone
- (312) 227-4000
- NPI assigned
- Mar 25, 2017
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Pediatric Critical Care Medicine Physician | 2080P0203X | 036.165303 | IL | Primary |
| Pediatrics Physician | 208000000X | 02005466A | IN |
Addresses
Primary practice location
225 E Chicago Ave
Chicago, IL 60611-2991
Mailing address
225 E Chicago Ave
Chicago, IL 60611-2991
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 300004033 | Medicaid | IN |
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 Osteopathy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 036.165303 | IL | MD | Pediatric Critical Care Medicine Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| University Pediatric Associates, Inc. | Pediatrics | Past | Accepting new patients |
Organizations & group practices 1
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Pediatrics Physician
- Indianapolis, IN
- NPI 1457396541
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1490400000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1776816000000",
"number": "1023549599",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "225 E CHICAGO AVE",
"city": "CHICAGO",
"state": "IL",
"postal_code": "606112991"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "225 E CHICAGO AVE",
"city": "CHICAGO",
"state": "IL",
"postal_code": "606112991",
"telephone_number": "312-227-4000"
}
],
"practiceLocations": [],
"basic": {
"last_name": "GAHAGEN",
"first_name": "RACHEL",
"credential": "D.O.",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2017-03-25",
"last_updated": "2026-04-22",
"certification_date": "2026-04-22",
"status": "A"
},
"taxonomies": [
{
"code": "2080P0203X",
"taxonomy_group": "",
"desc": "Pediatrics, Pediatric Critical Care Medicine",
"state": "IL",
"license": "036.165303",
"primary": true
},
{
"code": "208000000X",
"taxonomy_group": "",
"desc": "Pediatrics",
"state": "IN",
"license": "02005466A",
"primary": false
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "300004033",
"state": "IN"
}
],
"endpoints": [],
"other_names": []
}
Other providers in Chicago, IL
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 22, 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.