Active NPI
Shaham S Mumtaz, MD
- Gastroenterology Physician
- Winfield, IL
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Gastroenterology Physician
- License
- 125.063006
- Practice address
- 25 N Winfield Rd Ste 420
Winfield, IL 60190-1222 - Phone
- (630) 682-8700
- NPI assigned
- Mar 26, 2013
- 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 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Gastroenterology Physician | 207RG0100X | 125.063006 | IL | Primary |
| Internal Medicine Physician | 207R00000X | 125.063006 | IL | |
| Gastroenterology Physician | 207RG0100X | C206608 | CA |
Addresses
Primary practice location
25 N Winfield Rd Ste 420
Winfield, IL 60190-1222
Mailing address
25 N Winfield Rd Ste 420
Winfield, IL 60190-1222
Phone (630) 682-8700
Other practice location 1
302 Randall Rd Ste 105
Geneva, IL 60134-4219
Phone (630) 262-7400
Other practice location 2
4009 Mission Oaks Blvd
Camarillo, CA 93012-5156
Phone (805) 484-7921
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in IL, CA
- 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
- Gastroenterology
- Education
- University of Missouri, Kansas City, School of Medicine, 2013
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Telehealth
- Offers telehealth services
- Group practices
Practice addresses (Care Compare)
25 N Winfield Rd
Winfield, IL 60190-1222
Phone (630) 933-1600
Hospital & facility affiliations
- Northwestern Medicine Central Dupage Hospital
- Northwestern Medicine Delnor Community Hospital
Merit-based Incentive Payment System (MIPS)
- Final score
- 95.19 of 100
- Quality
- 83.05
- Promoting interoperability
- 100
- Improvement activities
- 40
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Colonoscopy | 83 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 118 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 125.063006 | IL | MD | Internal Medicine Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Central Dupage Physician Group | Internal Medicine | Current | Accepting new patients |
| Northwestern Medical Faculty Foundation | Current | Accepting new patients | |
| Central Dupage Physician Group | Current | Accepting new patients | |
| Northwestern Medical Faculty Foundation | Current | Accepting new patients |
Locations
Dept 5777
Carol Stream, IL 60122
Carol Stream, IL 60122
Phone (630) 933-3300
302 Randall Rd
Ste 105
Geneva, IL 60134
Phone (630) 232-0202
660 N Westmoreland Rd
#302
Lake Forest, IL 60045
515 Valley View Dr
Ste 201
Moline, IL 61265
Phone (312) 695-0870
1800 N Main St
Wheaton, IL 60187
Phone (630) 469-0045
25 N Winfield Rd
Winfield, IL 60190
Phone (630) 682-1600
25 N Winfield Rd
Ste 420
Winfield, IL 60190
Phone (630) 262-7400
0N025 Winfield Rd
Winfield, IL 60190
Phone (630) 832-0050
Organizations & group practices 5
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.
-
- Multi-Specialty Clinic/Center
- Carol Stream, IL
- NPI 1346235314
-
- Family Medicine Physician
- Carol Stream, IL
- NPI 1033149844
Internal Medicine
-
- Specialist
- Encinitas, CA
- NPI 1548567498
-
- Orthopaedic Surgery Physician
- Geneva, IL
- NPI 1780012344
-
- Durable Medical Equipment & Medical Supplies
- Chicago, IL
- NPI 1417718479
Hospital & facility affiliations 3
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Winfield, IL
- NPI 1003864810
-
- Psychiatric Hospital Unit
- Winfield, IL
- NPI 1740230895
-
- General Acute Care Hospital
- Geneva, IL
- NPI 1407859655
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1364256000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1784073600000",
"number": "1487996526",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "25 N WINFIELD RD STE 420",
"city": "WINFIELD",
"state": "IL",
"postal_code": "601901222",
"telephone_number": "630-682-8700"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "25 N WINFIELD RD STE 420",
"city": "WINFIELD",
"state": "IL",
"postal_code": "601901222",
"telephone_number": "630-682-8700"
}
],
"practiceLocations": [
{
"address_1": "302 Randall Rd Ste 105",
"address_purpose": "LOCATION",
"city": "Geneva",
"state": "IL",
"postal_code": "601344219",
"country_code": "US",
"telephone_number": "630-262-7400",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "4009 Mission Oaks Blvd",
"address_purpose": "LOCATION",
"city": "Camarillo",
"state": "CA",
"postal_code": "930125156",
"country_code": "US",
"telephone_number": "805-484-7921",
"fax_number": "805-388-5404",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "MUMTAZ",
"first_name": "SHAHAM",
"middle_name": "S",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2013-03-26",
"last_updated": "2026-07-15",
"certification_date": "2026-07-15",
"status": "A"
},
"taxonomies": [
{
"code": "207RG0100X",
"taxonomy_group": "",
"desc": "Internal Medicine, Gastroenterology",
"state": "IL",
"license": "125.063006",
"primary": true
},
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "IL",
"license": "125.063006",
"primary": false
},
{
"code": "207RG0100X",
"taxonomy_group": "",
"desc": "Internal Medicine, Gastroenterology",
"state": "CA",
"license": "C206608",
"primary": false
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Winfield, IL
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 15, 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.
- 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.