Active NPI
Richard Ladd Phelps, MD
- Endocrinology, Diabetes & Metabolism Physician
- Chicago, IL
National Provider Identifier
1770537482
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Endocrinology, Diabetes & Metabolism Physician
- License
- 036052170
- Practice address
- 201E Huron St 11-205
Chicago, IL 60611-2968 - Phone
- (312) 926-3670
- Fax
- (312) 926-3672
- NPI assigned
- May 19, 2006
- 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 | 036052170 | IL | Primary |
Addresses
Primary practice location
201E Huron St 11-205
Chicago, IL 60611-2968
Mailing address
201 E Huron St 11 205
Chicago, IL 60611-2968
Phone (312) 926-3670
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 236052170 | Medicaid | IL |
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 |
|---|---|---|---|---|
| I20090918000390 | IL | Practitioner - Internal Medicine | 2567518319 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1147996800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1770537482",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "201 E HURON ST 11 205",
"city": "CHICAGO",
"state": "IL",
"postal_code": "606112968",
"telephone_number": "312-926-3670",
"fax_number": "312-926-3672"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "201E HURON ST 11-205",
"city": "CHICAGO",
"state": "IL",
"postal_code": "606112968",
"telephone_number": "312-926-3670",
"fax_number": "312-926-3672"
}
],
"practiceLocations": [],
"basic": {
"last_name": "PHELPS",
"first_name": "RICHARD",
"middle_name": "LADD",
"name_prefix": "Dr.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-05-19",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "207RE0101X",
"taxonomy_group": "",
"desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
"state": "IL",
"license": "036052170",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "236052170",
"state": "IL"
}
],
"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 Jul 13, 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.