Douglas Shumaker, MD

Gastroenterology · Allergy & Immunology

21+ years in practiceNPI: 1225034937Licensed in OR

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Credentials & Recognition

Specialties

GastroenterologyAllergy & Immunology

NPI sub-specialties

Internal Medicine, Gastroenterology207RG0100X

Allergy & Immunology, Allergy207KA0200X

Practice Signals

Editorial signals beyond credentials. Patient transparency over opacity. See methodology.

Mid-Level (PA/NP) Use

Doctor-led visits

Years in Practice

21+ years

Estimated from NPI enumeration date

Featured in PBCMMG Rankings

#35

Top Allergists & Immunologists in Oregon, 2026

Allergy & Immunology · Oregon · 2026

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Frequently Asked Questions about Dr. Douglas Shumaker, MD

Where does Dr. Douglas Shumaker, MD practice?+
Dr. Douglas Shumaker, MD practices in Oregon, OR. 9701 SW BARNES RD STE 300 PORTLAND, OR 972256689.
What is Dr. Douglas Shumaker, MD's phone number?+
Dr. Douglas Shumaker, MD's practice phone is 503-297-8081. Office contact information is verified on the PBCMMG profile.
What does Dr. Douglas Shumaker, MD specialize in?+
Dr. Douglas Shumaker, MD's primary specialty is Gastroenterology, with additional focus on Allergy & Immunology.
Is Dr. Douglas Shumaker, MD board certified?+
Board certification status for Dr. Douglas Shumaker, MD has not been verified in the data sources PBCMMG uses (ABMS, state medical boards). The PBCMMG profile shows their current credential set.
How long has Dr. Douglas Shumaker, MD been practicing?+
Dr. Douglas Shumaker, MD has been in active practice for 21+ years, based on NPI enumeration and state licensing records.
What is Dr. Douglas Shumaker, MD's NPI number?+
Dr. Douglas Shumaker, MD's National Provider Identifier (NPI) is 1225034937, registered in the federal NPPES registry.

Profile maintained by Palm Beach County Medical Media Group, Inc. | Data verified from public registries (NPPES, ABMS, state medical boards). Methodology · Editorial Standards

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