NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Steven E. Day, M.D.

Ophthalmology Physician in Spokane, WA · enumerated 2005.

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

National Provider Identifier

1528066594

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Steven E. Day
Credential M.D.
Sex Male
Practice address 427 S Bernard St, Spokane, WA, 99204
Phone (509) 456-0107
Fax (509) 747-2635
Enumeration date Jul 13, 2005
Last updated in NPPES Jul 31, 2024

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License MD00036000 (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
A024 Other WA TRICARE
WA0690 Other WA NORTHWEST BENEFIT NETWORK
118765 Other WA LABOR AND INDUSTRIES
000010004966 Other ID ASURIS(REGENCE BS OF ID)
805190300 Other ID PUBLIC ASSISTANCE
8225716 Medicaid WA -
14075 Other WA GROUP HEALTH
180033030 Other WA RAILROAD MEDICARE
KB954 Other ID BLUE CROSS OF ID
DA5170 Other WA ASURIS(REGENCE NW HEALTH)

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

What is the NPI number for Steven Day?
The National Provider Identifier (NPI) for Steven Day is 1528066594, a Type 1 (individual) record in the CMS NPPES registry.
Where does Steven Day practice?
The practice location on file with NPPES is in Spokane, WA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-31.