Dr Mark Duncan, MD - Medicare Family Practice in Freeland, WA

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Dr Mark Duncan, MD is a medicare enrolled "Family Medicine" physician in Freeland, Washington. He went to West Virginia University School Of Medicine and graduated in 1995 and has 31 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Oak Harbor Primary Care Pllc and his current practice location is 5577 Vanbarr Pl, Freeland, Washington. You can reach out to his office (for appointments etc.) via phone at (360) 331-3343.

Dr Mark Duncan is licensed to practice in Washington (license number 60305379) 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 1598713919.

Contact Information

Dr Mark Duncan, MD
5577 Vanbarr Pl,
Freeland, WA 98249-9555
(360) 331-3343
Not Available

Map and Direction




Physician's Profile

Full NameDr Mark Duncan
GenderMale
SpecialityFamily Practice
Experience31 Years
Location5577 Vanbarr Pl, Freeland, Washington
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:
  • Dr Mark Duncan attended and graduated from West Virginia University School Of Medicine in 1995
  NPI Data:
  • NPI Number: 1598713919
  • Provider Enumeration Date: 05/05/2006
  • Last Update Date: 04/25/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 7719123561
  • Enrollment ID: I20130423000330

Medical Identifiers

Medical identifiers for Dr Mark Duncan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1598713919NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 045063 (Georgia)Secondary
207Q00000XFamily Medicine 60305379 (Washington)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Oak Harbor Primary Care Pllc75171966376

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. Dr Mark Duncan allows following entities to bill medicare on his behalf.
Entity NameFreeland Primary Care Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1043557333
PECOS PAC ID: 4183860935
Enrollment ID: O20130423000303
Entity NameOak Harbor Primary Care Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1881021905
PECOS PAC ID: 7517196637
Enrollment ID: O20140212000119

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. Dr Mark Duncan 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
Dr Mark Duncan, MD
Po Box 935,
Freeland, WA 98249-0935

Ph: (360) 331-3343		Dr Mark Duncan, MD
5577 Vanbarr Pl,
Freeland, WA 98249-9555

Ph: (360) 331-3343

Reviews and Comments


Family Medicine Doctors in Freeland, WA

Debra L Caswell, MS, PA-C
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1690 Layton Rd, Freeland, WA 98249
Phone: 360-331-1314    
Dr. William Alan Wien, DO
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1689 E Main St, Suite 1, Freeland, WA 98249
Phone: 360-331-4424    Fax: 360-331-1679

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.