NPIMap

Individual provider Active NPI

Ruth Mahmood, MD

  • Internal Medicine Physician
  • Weston, WI
National Provider Identifier
1659518199
Registry record updated May 11, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
54044 Issued in WI
Practice address
3400 Ministry Pkwy
Weston, WI 54476-5220
Phone
(715) 393-3000
NPI assigned
Jan 20, 2009
Last updated
May 11, 2026By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 11, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Hospitalist Physician 208M00000X 54044 WI
Internal Medicine Physician 207R00000X 54044 WI Primary

Addresses

Primary practice location

3400 Ministry Pkwy
Weston, WI 54476-5220

Mailing address

3400 Ministry Pkwy
Weston, WI 54476-5220
Phone (715) 393-3000

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WI
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20101026000991 WI Practitioner - Internal MedicinePractitioner - Hospitalist 9234322900 Reassigns benefits to 13 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Other, 1992
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
MCHS Hospitals IncGroup PAC ID 5698071173, shared by 28 NPIs, 1,195 clinicians
3D Healthcare Consulting LLCGroup PAC ID 1658634621, 7 clinicians

Practice addresses (Care Compare)

1000 N Oak Ave
Marshfield, WI 54449-5703
Phone (715) 387-5511

200880 Canopy LN
Rosholt, WI 54473-6705
Phone (715) 439-3084

6105 Babl LN
Weston
Schofield, WI 54476-1966
Phone (715) 574-0413

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
99.45 of 100Reported as group
Quality
90.06
Promoting interoperability
100
Improvement activities
40

Merit-based Incentive Payment System (MIPS)

Final score
87.15 of 100Reported as group
Quality
73.7
Promoting interoperability
100
Improvement activities
40
Cost
76.71

Merit-based Incentive Payment System (MIPS)

Final score
90.56 of 100Reported as group
Quality
87.43
Promoting interoperability
100
Improvement activities
40
Cost
78.24

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
54044WIMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Memorial Hospital Inc CurrentSince May 13, 2025 Accepting new patients
Black River Memorial Hospital Inc CurrentSince Feb 1, 2024 Accepting new patients
Lakeview Medical Center Inc of Rice Lake Internal Medicine CurrentSince May 13, 2025 Accepting new patients
MCHS Hospitals Inc Internal Medicine Current Accepting new patients
Bedrock HCS at Abbotsford LLC Current Accepting new patients
Flambeau Hospital Inc CurrentSince May 13, 2025 Accepting new patients
Black River Health Inc CurrentSince Feb 1, 2024 Accepting new patients
Beaver Dam Community Hospitals Inc CurrentSince Jan 9, 2018 Accepting new patients
MCHS Hospitals Inc Internal Medicine CurrentSince Apr 12, 2021 Accepting new patients
Memorial Hospital Inc CurrentSince May 13, 2025 Accepting new patients
J Rapha, SC Internal Medicine CurrentSince Sep 9, 2025 Accepting new patients
MCHS Hospitals Inc CurrentSince Apr 12, 2021 Accepting new patients
Flambeau Hospital Inc CurrentSince May 13, 2025 Accepting new patients
3D Healthcare Consulting LLC CurrentSince Jan 1, 2020 Accepting new patients
Black River Health Inc Current Accepting new patients
Marshfield Clinic Inc Internal Medicine CurrentSince Apr 12, 2021 Accepting new patients
MCHS Hospitals Inc Current Accepting new patients
Beaver Dam Community Hospitals Inc CurrentSince Jan 9, 2018 Accepting new patients

Locations

N10561 Grandview Ln
Ironwood, MI 49938
Phone (906) 932-1500

N10565 Grandview Ln
Ironwood, MI 49938
Phone (906) 932-1500

705 S University Ave
Beaver Dam, WI 53916
Phone (920) 885-6090

610 W Adams St
Blk River Fls, WI 54615
Phone (715) 284-4311

711 W Adams St
Blk River Fls, WI 54615
Phone (715) 284-1302

201 Hospital Rd
Eagle River, WI 54521
Phone (715) 477-3000

1000 Starr Ave
Eau Claire, WI 54703
Phone (715) 858-4850

3501 Golf Rd
Eau Claire, WI 54701
Phone (715) 858-4200

1000 N Oak Ave
Marshfield, WI 54449
Phone (715) 387-5111

1102 S Center Ave
Merrill, WI 54452
Phone (715) 536-3399

601 S Center Ave
Merrill, WI 54452
Phone (715) 536-5511

N3708 River Ave
Neillsville, WI 54456
Phone (715) 743-3101

2251 N Shore Dr
Rhinelander, WI 54501
Phone (715) 361-2300

2251 N Shore Dr
Ste 100
Rhinelander, WI 54501
Phone (715) 361-2074

1700 W Stout St
Rice Lake, WI 54868
Phone (715) 236-6133

1120 Pine St
Stanley, WI 54768
Phone (715) 644-5530

900 Illinois Ave
Stevens Point, WI 54481
Phone (715) 342-7500

401 W Mohawk Dr
Ste 100
Tomahawk, WI 54487
Phone (715) 453-7700

333 Pine Ridge Blvd
Wausau, WI 54401
Phone (715) 847-2160

3400 Ministry Pkwy
Weston, WI 54476
Phone (715) 393-1000

7805 Birch St
Weston, WI 54476
Phone (715) 298-3833

240 Maple St
Woodruff, WI 54568
Phone (715) 356-8000

Interoperability endpoints

  • FHIR API: https://fhir-myrecord.cerner.com/r4/7b17929a-d976-4002-b080-2a37b05f2444/
  • Direct secure messaging: ruth.mahmood@marshfieldclinichealthsystem.cernerdirect.com

Ownership & related parties

All facility ownership & control disclosures 2

Facilities whose Medicare enrollment lists this provider’s PECOS associate ID as an owner or managing party.

FacilityTypeRoleSince
Abbotsford Health Care CenterAbbotsford, WI, CCN 525435 Skilled nursing facility Operational/Managerial Control
Adp of the SNF		 Jun 8, 2025
Jun 8, 2025
Compassus - Central WisconsinMarshfield, WI, CCN 521516 Hospice Contracted Managing Employee Oct 1, 2023

Owned or controlled facilities with NPI records 2

Facilities whose Medicare enrollment lists this provider as an owner, officer, director or managing party.

Organizations & group practices 18

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

View all 18

Hospital & facility affiliations 21

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

View all 21

NPI Registry JSON

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

{
    "created_epoch": "1232409600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778457600000",
    "number": "1659518199",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3400 MINISTRY PKWY",
            "city": "WESTON",
            "state": "WI",
            "postal_code": "544765220",
            "telephone_number": "715-393-3000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3400 MINISTRY PKWY",
            "city": "WESTON",
            "state": "WI",
            "postal_code": "544765220",
            "telephone_number": "715-393-3000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MAHMOOD",
        "first_name": "RUTH",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2009-01-20",
        "last_updated": "2026-05-11",
        "certification_date": "2026-05-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "WI",
            "license": "54044",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "WI",
            "license": "54044",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Weston, WI

Sources for this page

Verify at the official NPI Registry.