Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Bigder, M.D.

Neurological Surgery Physician in Palo Alto, CA · enumerated 2018.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1306347679

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Bigder

Credential M.D.

Sex Male

Practice address 213 Quarry Road, Stanford Neuroscience Health Center, Palo Alto, CA, 94304

Phone (650) 723-6469

Fax (650) 320-9443

Enumeration date Feb 22, 2018

Last updated in NPPES May 23, 2020

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License ME145531 (FL) Primary

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 153531 (CA) Secondary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1306347679 active?

Yes, as of the latest NPPES snapshot, NPI 1306347679 is active (record last updated 2020-05-23).

How do I verify Mark Bigder's NPI record?

Cross-check NPI 1306347679 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-05-23.