Gregory S Willis, MD - Medicare Radiation Oncology in Tualatin, OR

Gregory S Willis, MD is a medicare enrolled "Radiology - Radiation Oncology" physician in Tualatin, Oregon. He went to Oregon Health Sciences University School Of Medicine and graduated in 1999 and has 25 years of diverse experience with area of expertise as Radiation Oncology. He is a member of the group practice Phc-las Cruces Inc and his current practice location is 6489 Sw Borland Rd, Tualatin, Oregon. You can reach out to his office (for appointments etc.) via phone at (503) 692-4843.

Gregory S Willis is licensed to practice in Oregon (license number MD28019) 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 1417941600.

Contact Information

Gregory S Willis, MD
6489 Sw Borland Rd,
Tualatin, OR 97062-9798
(503) 692-4843
(503) 692-6543

Map and Direction




Physician's Profile

Full NameGregory S Willis
GenderMale
SpecialityRadiation Oncology
Experience25 Years
Location6489 Sw Borland Rd, Tualatin, 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:
  • Gregory S Willis attended and graduated from Oregon Health Sciences University School Of Medicine in 1999
  NPI Data:
  • NPI Number: 1417941600
  • Provider Enumeration Date: 09/02/2005
  • Last Update Date: 07/16/2008
  Medicare PECOS Information:
  • PECOS PAC ID: 7012902315
  • Enrollment ID: I20160506000139

Medical Identifiers

Medical identifiers for Gregory S Willis such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1417941600NPI-NPPES
033138015OtherORREGENCE BCBS
140838OtherORMEDICARE PTAN

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2085R0001XRadiology - Radiation Oncology MD28019 (Oregon)Primary
2471R0002XRadiologic Technologist - Radiation Therapy MD28019 (Oregon)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Memorial Medical CenterLas cruces, NMHospital
Gerald Champion Regional Medical CenterAlamogordo, NMHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Phc-las Cruces Inc448663580222

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. Gregory S Willis allows following entities to bill medicare on his behalf.
Entity NamePhc-las Cruces Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1164445136
PECOS PAC ID: 4486635802
Enrollment ID: O20040624000297

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. Gregory S Willis 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
Gregory S Willis, MD
6489 Sw Borland Rd,
Tualatin, OR 97062-9798

Ph: (503) 692-4843
Gregory S Willis, MD
6489 Sw Borland Rd,
Tualatin, OR 97062-9798

Ph: (503) 692-4843

Reviews and Comments


Radiology Doctors in Tualatin, OR

Dr. Matthew Michael Treinen, DO
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Practice Location: 19300 Sw 65th Ave, Tualatin, OR 97062
Phone: 503-692-1212    Fax: 503-692-5307
Dr. Marcus Paul Carr, M.D.
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Practice Location: 19300 Sw 65th Ave, Tualatin, OR 97062
Phone: 503-692-1212    
Brian Robert Mahon, MD
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Phone: 503-692-5737    Fax: 503-692-5307
Joseph Marquardt, D.O.
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Practice Location: 19300 Sw 65th Ave, Tualatin, OR 97062
Phone: 503-692-1212    
David Wesley Nelson Jr., MD
Radiology
Medicare: Accepting Medicare Assignments
Practice Location: 19300 Sw 65th, Legacy Meridian Park Hospital, Tualatin, OR 97062
Phone: 503-692-5737    Fax: 503-692-5307
Timothy David Kadlecek, DO
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Medicare: Accepting Medicare Assignments
Practice Location: 19300 Sw 65th, Legacy Meridian Park Hospital, Tualatin, OR 97062
Phone: 503-692-5737    Fax: 503-692-5307

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).

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