Individual provider Active NPI

Margaret Gray, MD

  • Family Medicine Physician
  • Madison, WI
National Provider Identifier
1528509759
Registry record updated Jul 3, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
License
85567-20 Issued in WI
Practice address
2402 Winnebago St
Madison, WI 53704-5341
Phone
(608) 828-7603
Fax
(608) 242-6848
NPI assigned
Mar 20, 2017
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jul 3, 2026

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

Specialties & licenses 5

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X 85567-20 WI Primary
Internal Medicine Physician 207R00000X 85567-20 WI
Student in an Organized Health Care Education/Training Program 390200000X
Internal Medicine Physician 207R00000X 61118802 WA
Addiction Medicine (Psychiatry & Neurology) Physician 2084A0401X 85567-20 WI

Addresses

Primary practice location

2402 Winnebago St
Madison, WI 53704-5341

Mailing address

7974 Uw Health CT
Middleton, WI 53562-5531

Other practice location 1

1402B Sigler St
Nashville, TN 37203-4318
Phone (270) 302-1573

Other practice location 2

7102 Mineral Point Rd
Madison, WI 53717-1706
Phone (608) 828-7676

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WI
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 1

Enrollment IDStateProvider typePAC IDDetails
I20251210002852 WI Practitioner - Family PracticePractitioner - Internal Medicine 4789074121 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Family PracticeAlso: Internal Medicine
Education
Vanderbilt University School of Medicine, 2017
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

2402 Winnebago St
Madison, WI 53704-5341
Phone (608) 287-2770

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
85567-20WIMDFamily Medicine Physician
61118802WAMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
University of Wisconsin Medical Foundation, Inc CurrentSince Dec 1, 2025 Accepting new patients
University of Wisconsin Medical Foundation, Inc CurrentSince Dec 1, 2025 Accepting new patients
University of Wisconsin Medical Foundation Inc Past Accepting new patients

Locations

600 Highland Ave
Madison, WI 53792
Phone (608) 263-0325

7102 Mineral Point Rd
Madison, WI 53717
Phone (608) 828-7603

2402 Winnebago St
Madison, WI 53704
Phone (608) 242-6840

7974 Uw Health Ct
Middleton, WI 53562
Phone (608) 829-5270

Organizations & group practices 3

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.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1489968000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783036800000",
    "number": "1528509759",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7974 UW HEALTH CT",
            "city": "MIDDLETON",
            "state": "WI",
            "postal_code": "535625531"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2402 WINNEBAGO ST",
            "city": "MADISON",
            "state": "WI",
            "postal_code": "537045341",
            "telephone_number": "608-828-7603",
            "fax_number": "608-242-6848"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1402B Sigler St",
            "address_purpose": "LOCATION",
            "city": "Nashville",
            "state": "TN",
            "postal_code": "372034318",
            "country_code": "US",
            "telephone_number": "270-302-1573",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "7102 Mineral Point Rd",
            "address_purpose": "LOCATION",
            "city": "Madison",
            "state": "WI",
            "postal_code": "537171706",
            "country_code": "US",
            "telephone_number": "608-828-7676",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GRAY",
        "first_name": "MARGARET",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2017-03-20",
        "last_updated": "2026-07-03",
        "certification_date": "2026-07-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "WI",
            "license": "85567-20",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "WI",
            "license": "85567-20",
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "WA",
            "license": "61118802",
            "primary": false
        },
        {
            "code": "2084A0401X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Addiction Medicine",
            "state": "WI",
            "license": "85567-20",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Madison, WI

Sources for this page

Verify at the official NPI Registry.