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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

STEPHEN MARK HARDENBERGH L.AC.
NPI 1164470274
Acupuncturist in Portland, OR

Active since May 04, 2006
727 W. BURNSIDE, PORTLAND, OR 97209(503) 228-4533 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Stephen Mark Hardenbergh L.ac. NPPES

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

STEPHEN MARK HARDENBERGH L.AC. (NPI 1164470274) is an individual acupuncturist in Portland, Oregon, licensed in Oregon (AC00202) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1164470274
Entity TypeIndividualMale
Primary Taxonomy171100000X
Provider Legal NameSTEPHEN MARK HARDENBERGHCredential: L.AC.
Location Address727 W. BURNSIDEPortland, OR 97209
Mailing Address73 Ne Stanton #4Portland, OR 97212 · (503) 228-4533
Phone(503) 228-4533
Sole ProprietorNo
Enumeration DateMay 4, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1164470274 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAcupuncturistOther Service Providers
Taxonomy Code171100000X
License✔ Licensed in OR · AC00202
Definition
An acupuncturist is a person who performs ancient therapy for alleviation of pain, anesthesia and treatment of some diseases. Acupuncturists use long, fine needles inserted into specific points in order to treat painful conditions or produce anesthesia.
727 W. BURNSIDE, Portland, OR 97209
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Other Providers at the Same Location NPPES 3

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

MS. MEG DEVOE M.D.
Internal Medicine
727 W. BURNSIDE
PORTLAND, OR 97209
Multnomah County (503) 228-4533
HAZEL ROXANNE HAYES L.AC.
Acupuncturist
727 W. BURNSIDE
PORTLAND, OR 97209
Multnomah County (503) 228-4533
LISA MARIE KEPPINGER L.AC.
Acupuncturist
727 W. BURNSIDE
PORTLAND, OR 97209
Multnomah County (503) 228-4533

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 Stephen Hardenbergh's NPI number?

The NPI number for Stephen Hardenbergh is 1164470274. It was assigned to this individual provider in the NPPES registry on May 4, 2006.

Where is Stephen Hardenbergh located?

Stephen Hardenbergh practices at 727 W. Burnside, Portland, OR 97209. The listed phone number is (503) 228-4533.

What is Stephen Hardenbergh's specialty?

The primary specialty registered for this NPI is Acupuncturist with taxonomy code 171100000X.

When was this NPI record last updated?

The NPPES record for Stephen Hardenbergh was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 days 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.