Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark P Cain, MD

Pediatric Urology Physician in Seattle, WA · enumerated 2005.

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

National Provider Identifier

1912993320

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Registry record

Entity type Individual (Type 1)

Name Mark P Cain

Credential MD

Sex Male

Practice address 1959 Ne Pacific St, Seattle, WA, 98195

Phone (206) 520-5000

Enumeration date Sep 21, 2005

Last updated in NPPES Mar 4, 2025

Taxonomy & licenses

2088P0231X Pediatric Urology Physician Allopathic & Osteopathic Physicians · License MD60932505 (WA) Primary

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 01045572A (IN) Secondary

2088P0231X Pediatric Urology Physician Allopathic & Osteopathic Physicians · License 01045572A (IN) 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
000001039992	Other	IN	ANTHEM PTAN
1912993320	Medicaid	WA	-
000000190938	Other	IN	ANTHEM PTAN
200104710	Medicaid	IN	-
300081269	Medicaid	IN	-

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

What specialty is Mark Cain?

Mark Cain is registered in NPPES with the primary taxonomy of Pediatric Urology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-04.