Michael Massaro, DO

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

7971137 Issued in ID

Practice address

801 Pole Line Rd W
Twin Falls, ID 83301-5799

Phone

(208) 814-4100

Fax

(208) 814-4908

NPI assigned

Mar 24, 2021

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in ID

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

Internal Medicine

Education

Marian University College of Osteopathic Medicine, 2021

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

St Lukes Clinic-Treasure Valley LLCGroup PAC ID 4981878402, 1,155 clinicians

St Lukes Clinic LLCGroup PAC ID 1052217478, 313 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• St Luke'S Regional Medical Center Hospital, Boise, ID, CCN 130006
• St Lukes Magic Valley Medical Center Hospital, Twin Falls, ID, CCN 130002
• St Luke'S Nampa Medical Center Hospital, Nampa, ID, CCN 130071
• St Luke'S McCall Hospital, McCall, ID, CCN 131312

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

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.

• St Lukes Clinic-Treasure Valley LLC

  • Family Medicine Physician
  • Boise, ID
  • NPI 1326336058

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• St Luke'S Clinic LLC

  • Family Medicine Physician
  • Twin Falls, ID
  • NPI 1790718229
  Care Compare group

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

• St Lukes McCall LTD

  • Critical Access Hospital
  • McCall, ID
  • NPI 1235447970
  Care Compare affiliation
• St Lukes Regional Medical Center

  • Ambulance
  • Boise, ID
  • NPI 1518115195

  Hospital

  Care Compare affiliation
• St Lukes Regional Medical Center

  • General Acute Care Hospital
  • Boise, ID
  • NPI 1770586794
  Care Compare affiliation
• St Lukes West LTD

  • General Acute Care Hospital
  • Nampa, ID
  • NPI 1831590660
  Care Compare affiliation
• St. Luke'S Magic Valley Regional Medical Center, LTD.

  • General Acute Care Hospital
  • Twin Falls, ID
  • NPI 1932154705
  Care Compare affiliation

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

{
    "created_epoch": "1616544000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782864000000",
    "number": "1043897481",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "190 E BANNOCK ST",
            "city": "BOISE",
            "state": "ID",
            "postal_code": "837126241"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "801 POLE LINE RD W",
            "city": "TWIN FALLS",
            "state": "ID",
            "postal_code": "833015799",
            "telephone_number": "208-814-4100",
            "fax_number": "208-814-4908"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "8414 Naab Rd Ste 100",
            "address_purpose": "LOCATION",
            "city": "Indianapolis",
            "state": "IN",
            "postal_code": "462601972",
            "country_code": "US",
            "telephone_number": "317-338-7510",
            "fax_number": "317-338-7539",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2001 W 86th St",
            "address_purpose": "LOCATION",
            "city": "Indianapolis",
            "state": "IN",
            "postal_code": "462601902",
            "country_code": "US",
            "telephone_number": "317-338-2345",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "190 E Bannock St",
            "address_purpose": "LOCATION",
            "city": "Boise",
            "state": "ID",
            "postal_code": "837126241",
            "country_code": "US",
            "telephone_number": "208-381-5015",
            "fax_number": "208-381-1873",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MASSARO",
        "first_name": "MICHAEL",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-03-24",
        "last_updated": "2026-07-01",
        "certification_date": "2026-07-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "ID",
            "license": "7971137",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IN",
            "license": "02007224A",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Edward Justin Martinez
• Susan M Marzolf, M.D.
• Steven Lee Maschek, CNP
• Bryan C. Mason, MD
• Jennifer-Leigh Mason, LCSW
• Laura Matjasich, NP
• Hayley Matthews
• Monica Matthews
• Mary Mavencamp, LPN
• Jeannene Maxfield, SLP

• Internal Medicine Physician in Twin Falls, ID
• Providers in Twin Falls, ID by specialty
• Internal Medicine Physician in Idaho

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 1, 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.

Verify at the official NPI Registry.