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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. CURTIS R HOLZGANG MD
NPI 1700088838
Internal Medicine - Sleep Medicine in Portland, OR

Active since June 01, 2007
9205 SW BARNES RD, SUITE 20, PORTLAND, OR 97225(503) 216-2401(503) 216-4041 Get Directions Write a Review

NPPES record last updated: June 28, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Dr. Curtis R Holzgang Md NPPES

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

DR. CURTIS R HOLZGANG MD (NPI 1700088838) is an individual sleep medicine provider in Portland, Oregon, licensed in Oregon (MD06530) and active in the NPI registry since June 2007.

NPPES Registry Identity

NPI1700088838
Entity TypeIndividualMale
Primary Taxonomy207RS0012X
Provider Legal NameDR. CURTIS R HOLZGANGCredential: MD
Location Address9205 SW BARNES RD, SUITE 20Portland, OR 97225-6603
Mailing Address9205 Sw Barnes Rd, Suite 20Portland, OR 97225-6603 · (503) 216-2401 · Fax (503) 216-4041
Phone(503) 216-2401
Fax(503) 216-4041
Sole ProprietorYes
Enumeration DateJune 1, 2007
Last NPPES UpdateJune 28, 2026
✔ NPI 1700088838 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Sleep MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RS0012X
License✔ Licensed in OR · MD06530
Definition

An Internist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.

9205 SW BARNES RD, Portland, OR 97225
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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. NATE D QUILICI M.D.
Specialist
9205 SW BARNES RD
PORTLAND, OR 97225
Washington County (503) 216-2181
MARITZA MARTEL MD
Pathology (Anatomic Pathology)
9205 SW BARNES RD
PORTLAND, OR 97225
Washington County (503) 216-7575
DR. LEE W BALL MD
Specialist
9205 SW BARNES RD
PORTLAND, OR 97225
Washington County (503) 216-4830
DR. AMY S WEINSTEIN MD
Specialist
9205 SW BARNES RD
PORTLAND, OR 97225
Washington County (503) 216-4830
DR. JOHN D ROLL MD
Specialist
9205 SW BARNES RD
PORTLAND, OR 97225
Washington County (503) 216-4830
THE RADIOLOGY GROUP PC
Specialist
9205 SW BARNES RD
PORTLAND, OR 97225
Washington County (503) 216-4830
ALAN K MORIMOTO MD
Radiology (Diagnostic Radiology)
9205 SW BARNES RD
PORTLAND, OR 97225
Washington County (503) 292-9108
DR. BEN E JACOBSON M.D.
Radiology (Diagnostic Radiology)
9205 SW BARNES RD
PORTLAND, OR 97225
Washington County (503) 216-4830

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 Curtis Holzgang's NPI number?

The NPI number for Curtis Holzgang is 1700088838. It was assigned to this individual provider in the NPPES registry on June 1, 2007.

Where is Curtis Holzgang located?

Curtis Holzgang practices at 9205 SW Barnes Rd Suite 20, Portland, OR 97225. The listed phone number is (503) 216-2401.

What is Curtis Holzgang's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Sleep Medicine, with taxonomy code 207RS0012X.

When was this NPI record last updated?

The NPPES record for Curtis Holzgang was last updated on June 28, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.