Dr Merle Dean Williamson, MD - Medicare Anesthesiology in Happy Valley, OR

  1. Home
  2. Anesthesiology
  3. OR
  4. Happy Valley
Dr Merle Dean Williamson, MD is a medicare enrolled "Anesthesiology - Addiction Medicine" physician in Happy Valley, Oregon. His current practice location is 11167 Se Valley View Ter, Happy Valley, Oregon. You can reach out to his office (for appointments etc.) via phone at (503) 880-4852.

Dr Merle Dean Williamson is licensed to practice in Oregon (license number MD14580) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1467465823.

Contact Information

Dr Merle Dean Williamson, MD
11167 Se Valley View Ter,
Happy Valley, OR 97086-9715
(503) 880-4852
(503) 698-5268

Map and Direction




Physician's Profile

Full NameDr Merle Dean Williamson
GenderMale
SpecialityAnesthesiology - Addiction Medicine
Location11167 Se Valley View Ter, Happy Valley, Oregon
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1467465823
  • Provider Enumeration Date: 08/15/2006
  • Last Update Date: 06/29/2012
  Medicare PECOS Information:
  • PECOS PAC ID: 1456433523
  • Enrollment ID: I20080128000759

Medical Identifiers

Medical identifiers for Dr Merle Dean Williamson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1467465823NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207LA0401XAnesthesiology - Addiction Medicine MD14580 (Oregon)Primary

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 Merle Dean Williamson allows following entities to bill medicare on his behalf.
Entity NameRecovery Works Nw Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1083010094
PECOS PAC ID: 5991049835
Enrollment ID: O20181204003413

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 Merle Dean Williamson 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 Merle Dean Williamson, MD
11167 Se Valley View Ter,
Happy Valley, OR 97086-9715

Ph: (503) 880-4852		Dr Merle Dean Williamson, MD
11167 Se Valley View Ter,
Happy Valley, OR 97086-9715

Ph: (503) 880-4852

Reviews and Comments


Anesthesiology Doctors in Happy Valley, OR


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.