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DR. MERLE DEAN WILLIAMSON M.D.
NPI 1467465823
Anesthesiology - Addiction Medicine in Happy Valley, OR

Active since August 15, 2006PECOS Enrolled
11167 SE VALLEY VIEW TER, HAPPY VALLEY, OR 97086(503) 880-4852(503) 698-5268 Get Directions Write a Review

NPPES record last updated: June 29, 2012. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Merle Dean Williamson M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MERLE DEAN WILLIAMSON M.D. (NPI 1467465823) is an individual addiction medicine provider in Happy Valley, Oregon, licensed in Oregon (MD14580) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1467465823
Entity TypeIndividualMale
Primary Taxonomy207LA0401X
Provider Legal NameDR. MERLE DEAN WILLIAMSONCredential: M.D.
Location Address11167 SE VALLEY VIEW TERHappy Valley, OR 97086-9715
Mailing Address11167 Se Valley View TerHappy Valley, OR 97086-9715 · (503) 880-4852 · Fax (503) 698-5268
Phone(503) 880-4852
Fax(503) 698-5268
Sole ProprietorNo
Enumeration DateAugust 15, 2006
Last NPPES UpdateJune 29, 2012
✔ NPI 1467465823 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiology · Addiction MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207LA0401X
License✔ Licensed in OR · MD14580
Definition
An anesthesiologist who specializes in the diagnosis and treatment of addictions.
11167 SE VALLEY VIEW TER, Happy Valley, OR 97086
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Moda Health Plan, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Merle Dean Williamson M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer– Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97086 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$134.16 typical visit price
range $58.99 – $176.88
Typical copayment $33.54 (range $14.74 – $44.22)
Most-billed visit code 99204
Established Patient
$103.51 typical visit price
range $19.32 – $144.79
Typical copayment $25.87 (range $4.83 – $36.19)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Merle Williamson's NPI number?

The NPI number for Merle Williamson is 1467465823. It was assigned to this individual provider in the NPPES registry on August 15, 2006.

Where is Merle Williamson located?

Merle Williamson practices at 11167 SE Valley View Ter, Happy Valley, OR 97086. The listed phone number is (503) 880-4852.

What is Merle Williamson's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Addiction Medicine, with taxonomy code 207LA0401X.

Is Merle Williamson enrolled in Medicare?

Yes. Merle Williamson is registered in the Medicare PECOS enrollment system.

What insurance does Merle Williamson accept?

Health plans from Moda Health Plan, Inc. list Merle Williamson as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Merle Williamson was last updated on June 29, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.