Margaret Riesenberg-Karges, MD

Primary specialty

Surgery PhysicianTaxonomy code 208600000X

License

52314 Issued in AZ

Practice address

6879 N Oracle Rd Ste 133
Tucson, AZ 85704-4285

Phone

(520) 638-8311

Fax

(520) 638-8321

NPI assigned

Mar 30, 2009

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other names 1

• Margaret Karges Other name

Medicare fee-for-service enrollment

Enrolled in AZ

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

Specialty

General Surgery

Education

Saint Louis University School of Medicine, 2009

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Hospital & facility affiliations

• Bayada Hospice Hospice, Tucson, AZ, CCN 001571
• Oro Valley Hospital Hospital, Oro Valley, AZ, CCN 030114
• Northwest Medical Center Hospital, Tucson, AZ, CCN 030085

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

All facility ownership & control disclosures 1

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

Owned or controlled facilities with NPI records 1

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

• Bayada Home Health Care, Inc.

  • Community Based Hospice Care Agency
  • Tucson, AZ
  • NPI 1063111466

  W-2 Managing Employee

  CMS ownership

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.

• Sonoran Sky Surgical PLC

  • Surgery Physician
  • Tucson, AZ
  • NPI 1992410989
  Medicare reassignment NPD Authorized official
• Northwest Allied Physicians LLC

  • General Practice Physician
  • Tucson, AZ
  • NPI 1003833179
  Medicare reassignment NPD
• Sierra Vista Regional Health Center Medical Group LLC

  • Family Medicine Physician
  • Sierra Vista, AZ
  • NPI 1043575483

  Surgery

  Medicare reassignment NPD
• Northwest Allied Physicians, LLC

  • Durable Medical Equipment & Medical Supplies
  • Oro Valley, AZ
  • NPI 1821302910
  NPD
• Edmund Krasinski, Jr., D.O., P.L.L.C.

  • Gastroenterology Physician
  • Tucson, AZ
  • NPI 1245269349
  NPD (past)

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

• Bayada Home Health Care, Inc.

  • Community Based Hospice Care Agency
  • Tucson, AZ
  • NPI 1063111466
  Care Compare affiliation
• Northwest Hospital LLC

  dba Northwest Medical Center

  • General Acute Care Hospital
  • Tucson, AZ
  • NPI 1487607784
  Care Compare affiliation
• Oro Valley Hospital LLC

  dba Oro Valley Hospital

  • General Acute Care Hospital
  • Oro Valley, AZ
  • NPI 1386697688
  Care Compare affiliation

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

{
    "created_epoch": "1238371200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1741132800000",
    "number": "1235371725",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 43100",
            "city": "TUCSON",
            "state": "AZ",
            "postal_code": "857333100",
            "telephone_number": "520-638-8311",
            "fax_number": "520-638-8321"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6879 N ORACLE RD STE 133",
            "city": "TUCSON",
            "state": "AZ",
            "postal_code": "857044285",
            "telephone_number": "520-638-8311",
            "fax_number": "520-638-8321"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "RIESENBERG-KARGES",
        "first_name": "MARGARET",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2009-03-30",
        "last_updated": "2025-03-05",
        "certification_date": "2025-03-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "AZ",
            "license": "52314",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MARGARET",
            "last_name": "KARGES",
            "credential": "MD",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

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• Kelli Riggs, CPNP

• Surgery Physician in Tucson, AZ
• Providers in Tucson, AZ by specialty
• Surgery Physician in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 5, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; facility enrollments, owners and changes of ownership; Provider of Services certification data; 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.

Verify at the official NPI Registry.