Active NPI
Calla M Holmgren, MD
- Maternal & Fetal Medicine Physician
- Park Ridge, IL
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Maternal & Fetal Medicine Physician
- License
- 036.110796
- Practice address
- 1875 Dempster St
Park Ridge, IL 60068-1186 - Phone
- (847) 723-8610
- NPI assigned
- Oct 16, 2006
- 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 |
|---|---|---|---|---|
| Maternal & Fetal Medicine Physician | 207VM0101X | 5611159-1205 | UT | |
| Maternal & Fetal Medicine Physician | 207VM0101X | 036.110796 | IL | Primary |
Addresses
Primary practice location
1875 Dempster St
Park Ridge, IL 60068-1186
Mailing address
29373 Network PL
Chicago, IL 60673-1293
Electronic endpoints 2
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | cholmgren262873@direct.myadvocateaurora.org | Direct | |
| FHIR URL | https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/ |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in UT, IL
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
Care Compare profile
Medicare Care Compare- Specialty
- Obstetrics/Gynecology
- Education
- Medical College of Wisconsin, 1999
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
- Advocate Health and Hospitals Corporation
Practice addresses (Care Compare)
1875 Dempster St
Suite 325
Park Ridge, IL 60068-1127
Phone (847) 723-8610
3310 W Main St
Suite 200
St Charles, IL 60175-1024
Phone (630) 897-6044
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 036.110796 | IL | MD | Maternal & Fetal Medicine Physician |
| 5611159-1205 | UT | MD | Maternal & Fetal Medicine Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Endeavor Health Medical Group | Current | Accepting new patients | |
| University of Utah Specialty Services | Maternal & Fetal Medicine | Current | Accepting new patients |
| University of Utah Specialty Services | Current | Accepting new patients | |
| Advocate Health & Hospitals Corporation | Current | Accepting new patients | |
| Advocate Health and Hospitals Corporation | Current | Accepting new patients | |
| Endeavor Health Medical Group | Current | Accepting new patients | |
| Advocate Health and Hospitals Corporation | Current | Accepting new patients | |
| University of Utah Adult Services | Current | Accepting new patients | |
| University of Utah Adult Services | Current | Accepting new patients | |
| Advocate Health and Hospitals Corporation | Current | Accepting new patients | |
| University of Utah Specialty Services | Current | Accepting new patients | |
| University of Utah Adult Services | Current | Accepting new patients | |
| University of Utah OB Diagnostic Center | Past | Accepting new patients | |
| Memorial Hospital of Sweetwater County | Past | Accepting new patients |
Locations
1221 N Highland Ave
Aurora, IL 60506
Phone (630) 859-6700
2357 Sequoia Dr
Aurora, IL 60506
Phone (630) 859-6700
214 McHenry Rd
Buffalo Grove, IL 60089
Phone (847) 459-1160
9532 Eagle Way
Chicago, IL 60678
28594 Network Pl
Chicago, IL 60673
29373 Network Pl
Chicago, IL 60673
2650 Ridge Ave
#1223
Evanston, IL 60201
Phone (847) 982-3172
2650 Ridge Ave
Ste 1223
Evanston, IL 60201
Phone (847) 982-3175
2650 Ridge Ave
Ste 2218A
Evanston, IL 60201
Phone (847) 503-4222
4400 W 95th St
Ste 207
Oak Lawn, IL 60453
Phone (708) 346-5340
1875 W Dempster St
Park Ridge, IL 60068
Phone (847) 723-8640
1875 W Dempster St
Ste 325
Park Ridge, IL 60068
Phone (847) 723-6985
3310 W Main St
Ste 200
St Charles, IL 60175
Phone (630) 897-6044
5121 S Cottonwood St
Salt Lake Cty, UT 84107
Phone (801) 408-8998
50 N Medical Dr
#U
Salt Lake Cty, UT 84132
Phone (801) 581-4314
50 N Medical Dr
Slc, UT 84132
Phone (801) 581-2292
Interoperability endpoints
- cholmgren262873@direct.myadvocateaurora.org
Organizations & group practices 14
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.
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- General Practice Physician
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-
- General Practice Physician
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-
- Medical Specialty Clinic/Center
- Oak Lawn, IL
- NPI 1912936014
-
- Children's Hospital
- Oak Lawn, IL
- NPI 1508315516
-
- Anesthesiology Physician
- Evanston, IL
- NPI 1265695944
-
- Hematology & Oncology Physician
- Salt Lake City, UT
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-
- Diagnostic Radiology Physician
- Salt Lake City, UT
- NPI 1598169419
-
- Maternal & Fetal Medicine Physician
- Elko, NV
- NPI 1316324973
-
- Gynecologic Oncology Physician
- Salt Lake City, UT
- NPI 1699179754
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1160956800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1744848000000",
"number": "1194805002",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "29373 NETWORK PL",
"city": "CHICAGO",
"state": "IL",
"postal_code": "606731293"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1875 DEMPSTER ST",
"city": "PARK RIDGE",
"state": "IL",
"postal_code": "600681186",
"telephone_number": "847-723-8610"
}
],
"practiceLocations": [],
"basic": {
"last_name": "HOLMGREN",
"first_name": "CALLA",
"middle_name": "M",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2006-10-16",
"last_updated": "2025-04-17",
"certification_date": "2025-04-17",
"status": "A"
},
"taxonomies": [
{
"code": "207VM0101X",
"taxonomy_group": "",
"desc": "Obstetrics & Gynecology, Maternal & Fetal Medicine",
"state": "UT",
"license": "5611159-1205",
"primary": false
},
{
"code": "207VM0101X",
"taxonomy_group": "",
"desc": "Obstetrics & Gynecology, Maternal & Fetal Medicine",
"state": "IL",
"license": "036.110796",
"primary": true
}
],
"identifiers": [],
"endpoints": [
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "cholmgren262873@direct.myadvocateaurora.org",
"affiliation": "N",
"use": "DIRECT",
"useDescription": "Direct",
"address_1": "1875 Dempster St",
"city": "Park Ridge",
"state": "IL",
"country_code": "US",
"postal_code": "600681186",
"country_name": "United States",
"address_type": "DOM"
},
{
"endpointType": "FHIR",
"endpointTypeDescription": "FHIR URL",
"endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
"affiliation": "N",
"address_1": "1875 Dempster St",
"city": "Park Ridge",
"state": "IL",
"country_code": "US",
"postal_code": "600681186",
"country_name": "United States",
"address_type": "DOM"
}
],
"other_names": []
}
Other providers in Park Ridge, IL
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 17, 2025; 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.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.