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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.

WILLIAM N HINDERSTEIN MD
NPI 1043207095
Obstetrics & Gynecology in Mount Vernon, WA

Active since October 04, 2005
1400 E KINCAID ST, MOUNT VERNON, WA 98274(360) 428-2500(360) 428-6485 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About William N Hinderstein Md NPPES

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

WILLIAM N HINDERSTEIN MD (NPI 1043207095) is an individual obstetrics & gynecology provider in Mount Vernon, Washington, licensed in Washington (MD00038202) and active in the NPI registry since October 2005.

NPPES Registry Identity

NPI1043207095
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameWILLIAM N HINDERSTEINCredential: MD
Location Address1400 E KINCAID STMount Vernon, WA 98274-4127
Mailing Address1400 E Kincaid StMount Vernon, WA 98274-4127 · (360) 428-2500 · Fax (360) 428-6485
Phone(360) 428-2500
Fax(360) 428-6485
Sole ProprietorNo
Enumeration DateOctober 4, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1043207095 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in WA · MD00038202
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
1400 E KINCAID ST, Mount Vernon, WA 98274
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Other Identifiers 1

Medicaid8250169WA

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.

GREGORY WILLIAM MALLEK M.D.
Obstetrics & Gynecology
1400 E KINCAID ST
MOUNT VERNON, WA 98274
Skagit County (360) 428-2575
PUBLIC HOSPITAL DIST NO 1 SKAGIT
General Practice
1400 E KINCAID ST
MOUNT VERNON, WA 98274
Skagit County (360) 428-2500
SKAGIT VALLEY MEDICAL CENTER
Durable Medical Equipment & Medical Supplies
1400 E KINCAID ST
MOUNT VERNON, WA 98274
Skagit County (360) 428-2500
ERIN E CHARLES MD
Pediatrics
1400 E KINCAID ST
MOUNT VERNON, WA 98274
Skagit County (360) 428-2500
ANN D BARSHNEY ARNP
Nurse Practitioner
1400 E KINCAID ST
MOUNT VERNON, WA 98274
Skagit County (360) 428-2500
PATRICIA A FRANKLIN MD
Surgery
1400 E KINCAID ST
MOUNT VERNON, WA 98274
Skagit County (360) 428-2500
ERIC G POWELL DPM
Podiatrist (Foot & Ankle Surgery)
1400 E KINCAID ST
MOUNT VERNON, WA 98274
Skagit County (360) 848-4120
BARBARA J. HAHN MD
Family Medicine
1400 E KINCAID ST
MOUNT VERNON, WA 98274
Skagit County (360) 428-2500

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 William Hinderstein's NPI number?

The NPI number for William Hinderstein is 1043207095. It was assigned to this individual provider in the NPPES registry on October 4, 2005.

Where is William Hinderstein located?

William Hinderstein practices at 1400 E Kincaid St, Mount Vernon, WA 98274. The listed phone number is (360) 428-2500.

What is William Hinderstein's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

When was this NPI record last updated?

The NPPES record for William Hinderstein 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 33 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.