Robert A Mairs, DO

Primary specialty

Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X

License

DO20644 Issued in OR

Practice address

1050 SW 3Rd Ave Ste 3200
Ontario, OR 97914-4560

Phone

(541) 881-2325

Fax

(208) 914-6701

NPI assigned

Nov 28, 2005

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in OR, ID2 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

Specialty

Obstetrics/Gynecology

Education

At Still University of Health Sciences, College of Osteo Med, Kirksville, 1993

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Saint Alphonsus Medical Center- Ontario IncGroup PAC ID 1456488899, 42 clinicians

Harney District HospitalGroup PAC ID 6800877424, 35 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Saint Alphonsus Medical Center Ontario Hospital, Ontario, OR, CCN 380052
• Saint Alphonsus Regional Medical Center Hospital, Boise, ID, CCN 130007
• Good Shepherd Medical Center Hospital, Hermiston, OR, CCN 381325

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: rmairs1530726@direct.lhs.org

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.

• Harney District Hospital

  • Critical Access Hospital
  • Burns, OR
  • NPI 1285742338
  Medicare reassignment Care Compare group NPD
• Saint Alphonsus Medical Center- Ontario Inc

  • Internal Medicine Physician
  • Ontario, OR
  • NPI 1093034159
  Medicare reassignment Care Compare group
• Good Shepherd Health Care System

  • Critical Access Hospital
  • Hermiston, OR
  • NPI 1295789667
  Medicare reassignment NPD
• Valley Family Health Care, Inc

  • Federally Qualified Health Center (FQHC)
  • Ontario, OR
  • NPI 1295415032
  Medicare reassignment NPD
• St Lukes Clinic-Treasure Valley LLC

  • Family Medicine Physician
  • Boise, ID
  • NPI 1326336058

  Obstetrics & Gynecology

  Medicare reassignment NPD
• Valley Family Health Care Inc

  • Federally Qualified Health Center (FQHC)
  • Payette, ID
  • NPI 1407886484
  Medicare reassignment NPD
• Robert a. Mairs DO PC

  • Rural Health Clinic/Center
  • Ontario, OR
  • NPI 1891112967
  NPD Authorized official
• Good Shepherd Health Care System

  • Pediatrics Physician
  • Hermiston, OR
  • NPI 1336198159
  NPD
• Saint Alphonsus Medical Center- Ontario Inc

  • Internal Medicine Physician
  • Ontario, OR
  • NPI 1629397781
  NPD
• Valley Family Health Care, Inc

  • Federally Qualified Health Center (FQHC)
  • Vale, OR
  • NPI 1235166562
  NPD
• St Lukes Clinic-Treasure Valley LLC

  • Family Medicine Physician
  • Mountain Home, ID
  • NPI 1417297821
  NPD
• Valley Family Health Care, Inc

  • Federally Qualified Health Center (FQHC)
  • Emmett, ID
  • NPI 1932139995
  NPD

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

• Good Shepherd Health Care System

  • Critical Access Hospital
  • Hermiston, OR
  • NPI 1295789667
  Care Compare affiliation
• Saint Alphonsus Medical Center- Ontario Inc

  • General Acute Care Hospital
  • Ontario, OR
  • NPI 1891891792
  Care Compare affiliation
• Saint Alphonsus Regional Medical Center Inc

  • General Acute Care Hospital
  • Boise, ID
  • NPI 1184155426
  Care Compare affiliation
• Saint Alphonsus Regional Medical Center Inc

  • General Acute Care Hospital
  • Boise, ID
  • NPI 1457414948
  Care Compare affiliation
• Saint Alphonsus Regional Medical Center Inc

  • Psychiatric Hospital Unit
  • Boise, ID
  • NPI 1770687857
  Care Compare affiliation
• Saint Alphonsus Regional Medical Center Inc

  • Family Medicine Physician
  • Caldwell, ID
  • NPI 1861676298

  Hospital

  Care Compare affiliation
• Saint Alphonsus Regional Medical Center Inc

  • General Acute Care Hospital
  • Boise, ID
  • NPI 1992736649
  Care Compare affiliation

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

{
    "created_epoch": "1133136000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1758585600000",
    "number": "1124001862",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 190930",
            "city": "BOISE",
            "state": "ID",
            "postal_code": "837190930",
            "telephone_number": "208-367-5170",
            "fax_number": "208-367-5180"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1050 SW 3RD AVE STE 3200",
            "city": "ONTARIO",
            "state": "OR",
            "postal_code": "979144560",
            "telephone_number": "541-881-2325",
            "fax_number": "208-914-6701"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "840 SW 4th Ave Ste 105",
            "address_purpose": "LOCATION",
            "city": "Ontario",
            "state": "OR",
            "postal_code": "979142638",
            "country_code": "US",
            "telephone_number": "541-881-2800",
            "fax_number": "541-881-2825",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "9850 W St Lukes Dr Ste 320A",
            "address_purpose": "LOCATION",
            "city": "Nampa",
            "state": "ID",
            "postal_code": "836877912",
            "country_code": "US",
            "telephone_number": "208-706-3220",
            "fax_number": "208-706-3221",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MAIRS",
        "first_name": "ROBERT",
        "middle_name": "A",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-11-28",
        "last_updated": "2025-09-23",
        "certification_date": "2025-09-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207VG0400X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Gynecology",
            "state": "ID",
            "license": "O-186",
            "primary": false
        },
        {
            "code": "207VG0400X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Gynecology",
            "state": "OR",
            "license": "DO20644",
            "primary": false
        },
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "OR",
            "license": "DO20644",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "804163300",
            "state": "ID"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Lynsay Jo Ludwig, D.P.T.
• Kristie Marlene Lyman
• Lacey Jill Mackenzie, LPC
• Genelle Jo Mackey, MSW
• Karmin Renae Maher, NP
• Malheur County
• Malheur County
• Joni Mansfield
• Marc Iseri MD PC
• Jose Marquez

• Obstetrics & Gynecology Physician in Ontario, OR
• Providers in Ontario, OR by specialty
• Obstetrics & Gynecology Physician in Oregon

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 23, 2025; 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.