Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark T Eggleston, MD

Ophthalmology Physician in Clarkston, WA · enumerated 2005.

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

National Provider Identifier

1306836705

Verified

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Registry record

Entity type Individual (Type 1)

Name Mark T Eggleston

Credential MD

Sex Male

Practice address 500 Port Drive, Clarkston, WA, 99403

Phone (509) 758-8811

Fax (509) 751-1188

Enumeration date Oct 26, 2005

Last updated in NPPES Apr 30, 2008

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License MD00039323 (WA) Primary

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License M8239 (ID) 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
000010033114	Other	ID	REGENCE BLUE SHIELD OF IDAHO
0152789	Other	WA	LABOR & INDUSTRY
806011100	Medicaid	ID	-
MXXPR0054708	Other	WA	MOLINA HEALTHCARE
0000100033114	Other	-	FEDERAL BLUE CROSS
24509	Other	WA	GROUP HEALTH COOPERATIVE
BYHD5	Other	ID	BLUE CROSS OF IDAHO
000010145029	Other	ID	REGENCE BLUE SHIELD OF IDAHO
8293425	Medicaid	WA	-
8928983	Other	WA	CRIME VICTIMES COMPENSATION ACT
42663	Other	ID	BLUE CROSS OF IDAHO

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

Where does Mark Eggleston practice?

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

What is the NPI number for Mark Eggleston?

The National Provider Identifier (NPI) for Mark Eggleston is 1306836705, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-30.