Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mark G Critchlow, R.PH.
Pharmacist in Bellingham, WA · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1649551144
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Registry record
Entity type Individual (Type 1)
Name Mark G Critchlow
Credential R.PH.
Sex Male
Practice address 1400 Cornwall Ave, Bellingham, WA, 98225
Phone (360) 733-1980
Fax (360) 738-4628
Enumeration date Aug 30, 2011
Last updated in NPPES Aug 30, 2011
Taxonomy & licenses
RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy.
About the RPH credential
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
What is the NPI number for Mark Critchlow?
The National Provider Identifier (NPI) for Mark Critchlow is 1649551144, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Critchlow practice?
The practice location on file with NPPES is in Bellingham, WA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-08-30.