Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Shelley Marks, MD
Surgery Physician in Palo Alto, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1043325285
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Registry record
Entity type Individual (Type 1)
Name Shelley Marks
Credential MD
Sex Female
Practice address 795 El Camino Real, Palo Alto, CA, 94301
Phone (650) 321-4121
Enumeration date Aug 20, 2006
Last updated in NPPES Mar 4, 2020
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD 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
Where does Shelley Marks practice?
The practice location on file with NPPES is in Palo Alto, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Shelley Marks?
The National Provider Identifier (NPI) for Shelley Marks is 1043325285, 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 2020-03-04.