DR. MARK ALAN WILLIAMS O.D.
NPI 1801803689
Optometrist in Portland, OR

Q: What is Mark Williams's NPI number?

The NPI number for Mark Williams is 1801803689. It was assigned to this individual provider in the NPPES registry on August 2, 2006.

Q: What is Mark Williams's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Q: When was this NPI record last updated?

The NPPES record for Mark Williams was last updated on March 7, 2023. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since August 02, 2006PECOS Enrolled

3710 SW US VETERANS HOSPITAL RD, P-5-EYE, PORTLAND, OR 97239(503) 220-8262(503) 402-2943 Get Directions Write a Review

NPPES record last updated: March 7, 2023. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Dr. Mark Alan Williams O.d. NPPES

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

DR. MARK ALAN WILLIAMS O.D. (NPI 1801803689) is an individual optometrist in Portland, Oregon, licensed in Oregon (2163ATI) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1801803689

Entity TypeIndividualMale

Primary Taxonomy152W00000X

Provider Legal NameDR. MARK ALAN WILLIAMSCredential: O.D.

Location Address3710 SW US VETERANS HOSPITAL RD, P-5-EYEPortland, OR 97239-2964

Mailing Address3710 Sw Us Veterans Hospital RdPortland, OR 97239-2964 · (503) 220-8262

Phone(503) 220-8262

Fax(503) 402-2943

Sole ProprietorNo

Enumeration DateAugust 2, 2006

Last NPPES UpdateMarch 7, 2023

✔ NPI 1801803689 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers

Taxonomy Code152W00000X

Licenses✔ Licensed in OR · 2163ATI✔ Licensed in WA · OD00001823

Definition

Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.

3710 SW US VETERANS HOSPITAL RD, Portland, OR 97239

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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. Mark Alan Williams O.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 97239 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

$73.28 typical visit price

range $19.32 – $144.79

Typical copayment $18.32 (range $4.83 – $36.19)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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