Individual provider Active NPI

Shaham S Mumtaz, MD

  • Gastroenterology Physician
  • Winfield, IL
National Provider Identifier
1487996526
Registry record updated Jul 15, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gastroenterology PhysicianTaxonomy code 207RG0100X
License
125.063006 Issued in IL
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

Updated by the provider on Jul 15, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
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, CA2 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20190715002060 IL Practitioner - GastroenterologyPractitioner - Internal Medicine 4385947233 Reassigns benefits to 2 organizations
I20260617004217 CA Practitioner - Gastroenterology 4385947233 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
GastroenterologyAlso: Internal Medicine
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
Northwestern Medical Faculty FoundationGroup PAC ID 4587576814, 4,386 clinicians

Practice addresses (Care Compare)

25 N Winfield Rd
Winfield, IL 60190-1222
Phone (630) 933-1600

Hospital & facility affiliations

  • Northwestern Medicine Central Dupage Hospital Hospital, Winfield, IL, CCN 140242
  • Northwestern Medicine Delnor Community Hospital Hospital, Geneva, IL, CCN 140211

Merit-based Incentive Payment System (MIPS)

Final score
95.19 of 100Reported as apm
Quality
83.05
Promoting interoperability
100
Improvement activities
40

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy83
Upper gastrointestinal (GI) endoscopy for acid reflux118

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
125.063006ILMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Central Dupage Physician Group Internal Medicine CurrentSince Jul 15, 2019 Accepting new patients
Northwestern Medical Faculty Foundation CurrentSince Jun 14, 2023 Accepting new patients
Central Dupage Physician Group CurrentSince Jul 15, 2019 Accepting new patients
Northwestern Medical Faculty Foundation CurrentSince Jun 14, 2023 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.

Hospital & facility affiliations 3

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

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

Verify at the official NPI Registry.