Dr William R Berrington Iii, MD, PHD - Medicare Infectious Disease in Seattle, WA

Dr William R Berrington Iii, MD, PHD is a medicare enrolled "Internal Medicine - Infectious Disease" physician in Seattle, Washington. He went to University Of Alabama School Of Medicine and graduated in 2000 and has 24 years of diverse experience with area of expertise as Infectious Disease. He is a member of the group practice Swedish Health Services and his current practice location is 747 Broadway, Seattle, Washington. You can reach out to his office (for appointments etc.) via phone at (206) 215-2520.

Dr William R Berrington Iii is licensed to practice in Washington (license number MD00042229) 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 1558374025.

Contact Information

Dr William R Berrington Iii, MD, PHD
747 Broadway,
Seattle, WA 98122-4379
(206) 215-2520
(206) 386-3180

Map and Direction




Physician's Profile

Full NameDr William R Berrington Iii
GenderMale
SpecialityInfectious Disease
Experience24 Years
Location747 Broadway, Seattle, 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 William R Berrington Iii attended and graduated from University Of Alabama School Of Medicine in 2000
  NPI Data:
  • NPI Number: 1558374025
  • Provider Enumeration Date: 08/14/2006
  • Last Update Date: 03/07/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 0840271946
  • Enrollment ID: I20040525001604

Medical Identifiers

Medical identifiers for Dr William R Berrington Iii such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1558374025NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0200XInternal Medicine - Infectious Disease MD00042229 (Washington)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Swedish Medical CenterSeattle, WAHospital
Swedish Medical Center / Cherry HillSeattle, WAHospital
Swedish IssaquahIssaquah, WAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Swedish Health Services0244138196834

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 William R Berrington Iii allows following entities to bill medicare on his behalf.
Entity NameSwedish Health Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1689612954
PECOS PAC ID: 0244138196
Enrollment ID: O20031230000187

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 William R Berrington Iii 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 William R Berrington Iii, MD, PHD
Po Box 25608,
Salt Lake City, UT 84125-0608

Ph: (206) 320-4476
Dr William R Berrington Iii, MD, PHD
747 Broadway,
Seattle, WA 98122-4379

Ph: (206) 215-2520

Reviews and Comments


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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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