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

Dr. Benigno Waldo A Dagan, MD

Internal Medicine Physician in Sumner, WA · enumerated 2006 · practices at Cornerstone Medical Clinic.

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

National Provider Identifier

1235182122

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Registry record

Entity type Individual (Type 1)

Name Dr. Benigno Waldo A Dagan

Credential MD

Sex Male

Practice address Sumner, WA, 98390

Phone (253) 987-5156

Fax (253) 987-5462

Enumeration date May 19, 2006

Last updated in NPPES May 10, 2011

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD00036169 (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
5496722	Other	WA	AETNA PROVIDER NUMBER
0185591	Other	WA	L & I PROVIDER NUMBER
2004507	Medicaid	WA	-
98390A015	Other	WA	TRICARE PROVIDER NUMBER
9869DA	Other	WA	REGENCE RIDER NUMBER
911203494BP	Other	WA	KPS PROVIDER NUMBER

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 Benigno Waldo Dagan?

Benigno Waldo Dagan is registered in NPPES with the primary taxonomy of Internal Medicine 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.

Other providers at this practice address

Browse all →

Cornerstone Medical Clinic Internal Medicine Physician · Sumner, WA NPI 1235460676 Ariana Mcdonald Family Nurse Practitioner · Sumner, WA NPI 1922650357

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-05-10.