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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.

THEODORE D HEGG M.D.
NPI 1255373767
Specialist in Mount Vernon, WA

Active since June 11, 2006
307 S 13TH ST STE 300, MOUNT VERNON, WA 98274(360) 336-9757(360) 336-2088 Get Directions Write a Review

NPPES record last updated: September 20, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

About Theodore D Hegg M.d. NPPES

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

THEODORE D HEGG M.D. (NPI 1255373767) is an individual specialist in Mount Vernon, Washington, licensed in Washington (MD00014826) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1255373767
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NameTHEODORE D HEGGCredential: M.D.
Location Address307 S 13TH ST STE 300Mount Vernon, WA 98274-4109
Mailing Address307 S 13th St Ste 300Mount Vernon, WA 98274-4109 · (360) 336-9757 · Fax (360) 336-2088
Phone(360) 336-9757
Fax(360) 336-2088
Sole ProprietorNo
Enumeration DateJune 11, 2006
Last NPPES UpdateSeptember 20, 2026
✔ NPI 1255373767 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in WA · MD00014826
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
307 S 13TH ST STE 300, Mount Vernon, WA 98274
Open in Google Maps ↗

Other Identifiers 1

Medicaid8397804WA

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.

GRAHAM MEEKS
Nurse Practitioner
307 S 13TH ST STE 300
MOUNT VERNON, WA 98274
Skagit County (360) 336-9757
KARA JOAN HAWKER FNP-C
Nurse Practitioner (Family)
307 S 13TH ST STE 300
MOUNT VERNON, WA 98274
Skagit County (360) 336-9757
FEDOR VYACHESLAVOVICH TORCHILO DNP
Nurse Practitioner (Acute Care)
307 S 13TH ST STE 300
MOUNT VERNON, WA 98274
Skagit County (360) 336-9757
RAYMOND WILLIAM WEINRICH PA-C
Physician Assistant (Medical)
307 S 13TH ST STE 300
MOUNT VERNON, WA 98274
Skagit County (360) 336-9757
BRITTA GREENWALD RD
Dietitian, Registered
307 S 13TH ST STE 300
MOUNT VERNON, WA 98274
Skagit County (360) 848-8500
DR. MARK ALAN MCCONNELL D.O.
Internal Medicine (Cardiovascular Disease)
307 S 13TH ST STE 300
MOUNT VERNON, WA 98274
Skagit County (360) 336-9757
MATHANGI SURESH KESHAVAN DO
Nuclear Medicine (Nuclear Cardiology)
307 S 13TH ST STE 300
MOUNT VERNON, WA 98274
Skagit County (360) 336-9757
AFFAN HALEEM MD
Internal Medicine (Clinical Cardiac Electrophysiology)
307 S 13TH ST STE 300
MOUNT VERNON, WA 98274
Skagit County (360) 336-9757

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 Theodore Hegg's NPI number?

The NPI number for Theodore Hegg is 1255373767. It was assigned to this individual provider in the NPPES registry on June 11, 2006.

Where is Theodore Hegg located?

Theodore Hegg practices at 307 S 13th St Ste 300, Mount Vernon, WA 98274. The listed phone number is (360) 336-9757.

What is Theodore Hegg's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

When was this NPI record last updated?

The NPPES record for Theodore Hegg was last updated on September 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.