Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Richard E Marks, MD

Neurology Physician in Seattle, WA · enumerated 2006.

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

National Provider Identifier

1427113281

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Richard E Marks

Credential MD

Sex Male

Practice address 550 16th Ave, Ste100, Seattle, WA, 98122

Phone (206) 320-2484

Fax (206) 320-4568

Enumeration date Dec 22, 2006

Last updated in NPPES Feb 18, 2009

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License MD00014821 (WA) 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
1348804	Medicaid	WA	-

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 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 Richard Marks?

Richard Marks is registered in NPPES with the primary taxonomy of Neurology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-02-18.