Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark S Wallace, MD

Q: What is the NPI number for Mark Wallace?

The National Provider Identifier (NPI) for Mark Wallace is 1427098102, a Type 1 (individual) record in the CMS NPPES registry.

Pain Medicine (Anesthesiology) Physician in San Diego, CA · enumerated 2006.

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

National Provider Identifier

1427098102

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark S Wallace

Credential MD

Sex Male

Practice address Ucsd Medical Center, 200 West Arbor Drive Mc 0801, San Diego, CA, 92103

Phone (619) 543-5720

Enumeration date Jun 8, 2006

Last updated in NPPES Aug 21, 2018

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License G72906 (CA) Secondary

207LP2900X Pain Medicine (Anesthesiology) Physician Allopathic & Osteopathic Physicians · License G72906 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
00G729060	Medicaid	CA	-

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

What is the NPI number for Mark Wallace?

The National Provider Identifier (NPI) for Mark Wallace is 1427098102, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mark Wallace practice?

The practice location on file with NPPES is in San Diego, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-08-21.