Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Walter William Strauser, M.D.

Pain Medicine (Physical Medicine & Rehabilitation) Physician in San Diego, CA · enumerated 2005.

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

National Provider Identifier

1518957521

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Registry record

Entity type Individual (Type 1)

Name Dr. Walter William Strauser

Credential M.D.

Sex Male

Practice address San Diego, CA, 92123

Phone (858) 939-4489

Fax (858) 939-4487

Enumeration date Oct 21, 2005

Last updated in NPPES Dec 8, 2009

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2081P2900X Pain Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License G56903 (CA) Primary

2084P2900X Pain Medicine (Psychiatry & Neurology) Physician Allopathic & Osteopathic Physicians · License G56903 (CA) Secondary

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
00G56903	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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Walter Strauser?

Walter Strauser is registered in NPPES with the primary taxonomy of Pain Medicine (Physical Medicine & Rehabilitation) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-12-08.