Robert A Mairs, DO - Medicare Obstetrics/gynecology in Ontario, OR

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Robert A Mairs, DO is a medicare enrolled "Obstetrics & Gynecology" physician in Ontario, Oregon. He went to At Still University Of Health Sciences, College Of Osteo Med, Kirksville and graduated in 1993 and has 33 years of diverse experience with area of expertise as Obstetrics/gynecology. He is a member of the group practice Valley Family Health Care Inc, Valley Family Health Care Inc, Harney District Hospital and his current practice location is 1050 Sw 3rd Ave Ste 3200, Ontario, Oregon. You can reach out to his office (for appointments etc.) via phone at (541) 881-2325.

Robert A Mairs is licensed to practice in Oregon (license number DO20644) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1124001862.

Contact Information

Robert A Mairs, DO
1050 Sw 3rd Ave Ste 3200,
Ontario, OR 97914-4560
(541) 881-2325
(208) 914-6701

Map and Direction




Physician's Profile

Full NameRobert A Mairs
GenderMale
SpecialityObstetrics/gynecology
Experience33 Years
Location1050 Sw 3rd Ave Ste 3200, Ontario, Oregon
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Robert A Mairs attended and graduated from At Still University Of Health Sciences, College Of Osteo Med, Kirksville in 1993
  NPI Data:
  • NPI Number: 1124001862
  • Provider Enumeration Date: 11/28/2005
  • Last Update Date: 09/23/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 1254303407
  • Enrollment ID: I20040809001274

Medical Identifiers

Medical identifiers for Robert A Mairs such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1124001862NPI-NPPES
804163300MedicaidID

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207VG0400XObstetrics & Gynecology - Gynecology O-186 (Idaho)Secondary
207VG0400XObstetrics & Gynecology - Gynecology DO20644 (Oregon)Secondary
207V00000XObstetrics & Gynecology DO20644 (Oregon)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Valley Family Health Care Inc054716959142
Valley Family Health Care Inc054716959142
Harney District Hospital680087742428

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Robert A Mairs allows following entities to bill medicare on his behalf.
Entity NameGood Shepherd Health Care System
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1295789667
PECOS PAC ID: 9133033764
Enrollment ID: O20031118000046
Entity NameValley Family Health Care Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1295415032
PECOS PAC ID: 0547169591
Enrollment ID: O20040305000532
Entity NameHarney District Hospital
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1285742338
PECOS PAC ID: 6800877424
Enrollment ID: O20061104000508

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Robert A Mairs is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Robert A Mairs, DO
Po Box 190930,
Boise, ID 83719-0930

Ph: (208) 367-5170		Robert A Mairs, DO
1050 Sw 3rd Ave Ste 3200,
Ontario, OR 97914-4560

Ph: (541) 881-2325

Reviews and Comments


Obstetrics & Gynecology Doctors in Ontario, OR

Dr. Kenneth Leif Nathaniel Sjoren, DO
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 840 Sw 4th Ave Ste 105, Ontario, OR 97914
Phone: 541-881-2800    Fax: 541-881-2825
Dr. James T Roth, M.D.
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 1219 Sw 4th Ave Unit 2, Ontario, OR 97914
Phone: 801-261-3975    Fax: 801-262-9142
Furm M Duncan Jr., MD
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 1219 Sw 4th Ave, Suite 2, Ontario, OR 97914
Phone: 541-889-2229    Fax: 541-889-4378
Brandye Wilson-manigat, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 351 Sw 9th St, Ontario, OR 97914
Phone: 541-881-7184    Fax: 541-881-7016
William Barrett Stinger, D.O.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 840 Sw 4th Ave, Ontario, OR 97914
Phone: 541-881-2800    Fax: 541-881-2825

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.