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DR. DIANE H WILLIAMS DO
NPI 1619973351
Internal Medicine - Gastroenterology in Portland, OR

Active since June 27, 2005
9701 SW BARNES RD, SUITE 300, PORTLAND, OR 97225(503) 297-8081(503) 292-6601 Get Directions Write a Review

NPPES record last updated: November 28, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Diane H Williams Do NPPES

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

DR. DIANE H WILLIAMS DO (NPI 1619973351) is an individual gastroenterology provider in Portland, Oregon, licensed in Oregon (DO15375) and active in the NPI registry since June 2005.

NPPES Registry Identity

NPI1619973351
Entity TypeIndividualFemale
Primary Taxonomy207RG0100X
Provider Legal NameDR. DIANE H WILLIAMSCredential: DO
Location Address9701 SW BARNES RD, SUITE 300Portland, OR 97225-6772
Mailing Address541 Ne 20th Ave Ste 225Portland, OR 97232-2895 · (503) 963-2801 · Fax (503) 963-2825
Phone(503) 297-8081
Fax(503) 292-6601
Sole ProprietorNo
Enumeration DateJune 27, 2005
Last NPPES UpdateNovember 28, 2023
NPPES CertifiedNovember 28, 2023
✔ NPI 1619973351 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in OR · DO15375
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
9701 SW BARNES RD, Portland, OR 97225
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Other Identifiers 2

Medicaid196642OR
Medicaid8126294WA

Other Providers at the Same Location NPPES 20

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

DR. CHRISTOPHER R CARTER MD
Internal Medicine (Gastroenterology)
9701 SW BARNES RD, SUITE 300
PORTLAND, OR 97225
Washington County (503) 297-8081
THE OREGON CLINIC PC
Clinic/Center (Endoscopy)
9701 SW BARNES RD, SUITE 310
PORTLAND, OR 97225
Washington County (503) 297-8081
DR. CRISTIAN R. VALLEJOS M.D.
Internal Medicine (Gastroenterology)
9701 SW BARNES RD, SUITE 300
PORTLAND, OR 97225
Washington County (503) 297-8081
SALLY J WENTROSS MD
Obstetrics & Gynecology
9701 SW BARNES RD, SUITE 200
PORTLAND, OR 97225
Washington County (503) 734-3700
DR. GEORGE KOVAL MD
Internal Medicine (Gastroenterology)
9701 SW BARNES RD, STE 300
PORTLAND, OR 97225
Washington County (503) 297-8081
JENNIFER SARA SEMMELROTH PA-C
Physician Assistant (Medical)
9701 SW BARNES RD, SUITE 300
PORTLAND, OR 97225
Washington County (503) 297-8081
ANNA MALORA HARTSHORN ACNP
Nurse Practitioner (Acute Care)
9701 SW BARNES RD, SUITE 300
PORTLAND, OR 97225
Washington County (503) 297-8081
DR. MARY ELIZABETH SKRYPZAK M.D.
Obstetrics & Gynecology (Gynecology)
9701 SW BARNES RD, SUITE 150
PORTLAND, OR 97225
Washington County (503) 734-3535

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 Diane Williams's NPI number?

The NPI number for Diane Williams is 1619973351. It was assigned to this individual provider in the NPPES registry on June 27, 2005.

Where is Diane Williams located?

Diane Williams practices at 9701 SW Barnes Rd Suite 300, Portland, OR 97225. The listed phone number is (503) 297-8081.

What is Diane Williams's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

When was this NPI record last updated?

The NPPES record for Diane Williams was last updated on November 28, 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.