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DR. NICHOLAS R WILLIAMS DO, MPH
NPI 1699255869
Psychiatry & Neurology - Psychiatry in Portland, OR

Active since August 17, 2018PECOS EnrolledAccepts Medicare Assignment
87.76/100
CMS Quality Rating
9155 SW BARNES RD STE 333, PORTLAND, OR 97225(503) 216-5102(971) 282-0091 Get Directions Write a Review

NPPES record last updated: December 8, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 8, 2023, Oct 27, 2023, Sep 6, 2023 and 6 more (9 updates tracked since 2018).

About Dr. Nicholas R Williams Do, Mph NPPES

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

DR. NICHOLAS R WILLIAMS DO, MPH (NPI 1699255869) is an individual psychiatry provider in Portland, Oregon, licensed in Oregon (DO216050) and active in the NPI registry since August 2018. He is enrolled in Medicare PECOS and is a graduate of Other (2018).

NPPES Registry Identity

NPI1699255869
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. NICHOLAS R WILLIAMSCredential: DO, MPH
Location Address9155 SW BARNES RD STE 333Portland, OR 97225-6630
Mailing Address9155 Sw Barnes Rd Ste 333Portland, OR 97225-6630 · (503) 216-5102
Phone(503) 216-5102
Fax(971) 282-0091
Sole ProprietorNo
Medical School CMSOtherGraduated 2018
Enumeration DateAugust 17, 2018
Last NPPES UpdateDecember 8, 20239 updates tracked since enumeration
NPPES CertifiedDecember 8, 2023
✔ NPI 1699255869 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
Licenses✔ Licensed in OR · DO216050✔ Licensed in NE · 2309
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
9155 SW BARNES RD STE 333, Portland, OR 97225
Open in Google Maps ↗

Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Nicholas R Williams Do, Mph is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3274863238
PECOS Enrollment IDI20230907001696
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Nicholas Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Providence Health & Services - Oregon
Same address
Psychiatry
9155 SW BARNES RD, STE 333
Portland, OR 97225
  • Reassigned Medicare billing, Oregon enrollment
  • 1,501 clinicians in this Medicare group
NPI 1013192806 (503) 216-5102
Providence Health & Services - Oregon
0.1 mi
Clinic/Center
9205 SW BARNES RD, SUITE 20
Portland, OR 97225
  • Reassigned Medicare billing, Oregon enrollment
  • 753 clinicians in this Medicare group
NPI 1235259532 (503) 216-2229

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97225 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
$176.88 typical visit price
range $58.99 – $176.88
Typical copayment $44.22 (range $14.74 – $44.22)
Most-billed visit code 99205
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

87.76/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality85.17
Promoting Interoperability100
Improvement Activities40
Cost74.03

Other Providers at the Same Location NPPES 16

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MARK S FETTMAN MD
Psychiatry & Neurology (Psychiatry)
9155 SW BARNES RD STE 333
PORTLAND, OR 97225
Washington County (503) 216-5102
JENNIFER M BRINKMAN LCSW
Social Worker (Clinical)
9155 SW BARNES RD STE 333
PORTLAND, OR 97225
Washington County (503) 216-5102
MR. KENDALL M JOHNSON L.C.S.W.
Social Worker (Clinical)
9155 SW BARNES RD STE 333
PORTLAND, OR 97225
Washington County (503) 216-5102
ERIKA SIEGEL LCSW, CADC I
Social Worker
9155 SW BARNES RD STE 333
PORTLAND, OR 97225
Washington County (503) 216-5102
AARON BEAUGH SUMMERS DNP-FNP
Nurse Practitioner (Psychiatric/Mental Health)
9155 SW BARNES RD STE 333
PORTLAND, OR 97225
Washington County (971) 345-5060
KATRIN E BEENE PSYD
Clinical Neuropsychologist
9155 SW BARNES RD STE 333
PORTLAND, OR 97225
Washington County (503) 216-5102
ANTHONY DALE GASTON PMHNP
Nurse Practitioner (Psychiatric/Mental Health)
9155 SW BARNES RD STE 333
PORTLAND, OR 97225
Washington County (503) 216-5102
KELLY M HARRINGTON MD
Psychiatry & Neurology (Psychiatry)
9155 SW BARNES RD STE 333
PORTLAND, OR 97225
Washington County (503) 216-5102

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 Nicholas Williams's NPI number?

The NPI number for Nicholas Williams is 1699255869. It was assigned to this individual provider in the NPPES registry on August 17, 2018.

Where is Nicholas Williams located?

Nicholas Williams practices at 9155 SW Barnes Rd Ste 333, Portland, OR 97225. The listed phone number is (503) 216-5102.

What is Nicholas Williams's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Nicholas Williams enrolled in Medicare?

Yes. Nicholas Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Nicholas Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Williams reassigns Medicare benefits to 2 organizations: Providence Health & Services - Oregon (Portland, OR) and Providence Health & Services - Oregon (Portland, OR). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nicholas Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Nicholas Williams accept?

Health plans from Providence Health Plan list Nicholas Williams 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 Nicholas Williams was last updated on December 8, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.