Active NPI
Dannielle C Grayer, MD
- Infectious Disease Physician
- Chicago, IL
National Provider Identifier
1548754674
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Infectious Disease Physician
- License
- 036161232
- Practice address
- 240 E Huron St # 1-200
Chicago, IL 60611-2909 - Phone
- (312) 503-7975
- NPI assigned
- Jun 21, 2018
- 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 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Pediatrics Physician | 208000000X | 125073279 | IL | |
| Internal Medicine Physician | 207R00000X | 125073279 | IL | |
| Infectious Disease Physician | 207RI0200X | 036161232 | IL | Primary |
Addresses
Primary practice location
240 E Huron St # 1-200
Chicago, IL 60611-2909
Mailing address
2317 W Grenshaw St Unit 1
Chicago, IL 60612-4205
Phone (317) 629-6521
Other practice location 1
676 N Saint Clair St Ste 940
Chicago, IL 60611-2945
Phone (312) 926-8358
Other practice location 2
1650 W Harrison St Ste 466
Chicago, IL 60612-3800
Phone (312) 942-2200
Electronic endpoints 1
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | dannielle.grayer@northwestern.edu | Direct |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in IL
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20180818000011 | IL | Order and Referring Only - Pediatric Medicine | 8022367457 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 125073279 | IL | MD | Pediatrics Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1529539200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1788134400000",
"number": "1548754674",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "2317 W GRENSHAW ST UNIT 1",
"city": "CHICAGO",
"state": "IL",
"postal_code": "606124205",
"telephone_number": "317-629-6521"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "240 E HURON ST # 1-200",
"city": "CHICAGO",
"state": "IL",
"postal_code": "606112909",
"telephone_number": "312-503-7975"
}
],
"practiceLocations": [
{
"address_1": "676 N Saint Clair St Ste 940",
"address_purpose": "LOCATION",
"city": "Chicago",
"state": "IL",
"postal_code": "606112945",
"country_code": "US",
"telephone_number": "312-926-8358",
"fax_number": "312-926-9630",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "1650 W Harrison St Ste 466",
"address_purpose": "LOCATION",
"city": "Chicago",
"state": "IL",
"postal_code": "606123800",
"country_code": "US",
"telephone_number": "312-942-2200",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "GRAYER",
"first_name": "DANNIELLE",
"middle_name": "C",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2018-06-21",
"last_updated": "2026-08-31",
"certification_date": "2026-08-31",
"status": "A"
},
"taxonomies": [
{
"code": "208000000X",
"taxonomy_group": "",
"desc": "Pediatrics",
"state": "IL",
"license": "125073279",
"primary": false
},
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "IL",
"license": "125073279",
"primary": false
},
{
"code": "207RI0200X",
"taxonomy_group": "",
"desc": "Internal Medicine, Infectious Disease",
"state": "IL",
"license": "036161232",
"primary": true
}
],
"identifiers": [],
"endpoints": [
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "dannielle.grayer@northwestern.edu",
"affiliation": "N",
"endpointDescription": "email",
"use": "DIRECT",
"useDescription": "Direct",
"contentType": "CSV",
"contentTypeDescription": "CSV",
"address_1": "240 E Huron St # 1-200",
"city": "Chicago",
"state": "IL",
"country_code": "US",
"postal_code": "606112909",
"country_name": "United States",
"address_type": "DOM"
}
],
"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 Aug 31, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.