Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark Walt Steinberg, N.D.
Naturopath in Bellingham, WA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1205933363
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Registry record
Entity type Individual (Type 1)
Name Dr. Mark Walt Steinberg
Credential N.D.
Sex Male
Practice address 1313 E Maple St, Suite 102, Bellingham, WA, 98225
Phone (360) 738-3230
Fax (360) 738-4955
Enumeration date Sep 20, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Where does Mark Steinberg practice?
The practice location on file with NPPES is in Bellingham, WA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mark Steinberg?
The National Provider Identifier (NPI) for Mark Steinberg is 1205933363, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.